[ tor-browser ].git.dasho

d3.js (337945B)
      1 !function() {
      2  var d3 = {
      3    version: "3.5.17"
      4  };
      5  var d3_arraySlice = [].slice, d3_array = function(list) {
      6    return d3_arraySlice.call(list);
      7  };
      8  var d3_document = this.document;
      9  function d3_documentElement(node) {
     10    return node && (node.ownerDocument || node.document || node).documentElement;
     11  }
     12  function d3_window(node) {
     13    return node && (node.ownerDocument && node.ownerDocument.defaultView || node.document && node || node.defaultView);
     14  }
     15  if (d3_document) {
     16    try {
     17      d3_array(d3_document.documentElement.childNodes)[0].nodeType;
     18    } catch (e) {
     19      d3_array = function(list) {
     20        var i = list.length, array = new Array(i);
     21        while (i--) array[i] = list[i];
     22        return array;
     23      };
     24    }
     25  }
     26  if (!Date.now) Date.now = function() {
     27    return +new Date();
     28  };
     29  if (d3_document) {
     30    try {
     31      d3_document.createElement("DIV").style.setProperty("opacity", 0, "");
     32    } catch (error) {
     33      var d3_element_prototype = this.Element.prototype, d3_element_setAttribute = d3_element_prototype.setAttribute, d3_element_setAttributeNS = d3_element_prototype.setAttributeNS, d3_style_prototype = this.CSSStyleDeclaration.prototype, d3_style_setProperty = d3_style_prototype.setProperty;
     34      d3_element_prototype.setAttribute = function(name, value) {
     35        d3_element_setAttribute.call(this, name, value + "");
     36      };
     37      d3_element_prototype.setAttributeNS = function(space, local, value) {
     38        d3_element_setAttributeNS.call(this, space, local, value + "");
     39      };
     40      d3_style_prototype.setProperty = function(name, value, priority) {
     41        d3_style_setProperty.call(this, name, value + "", priority);
     42      };
     43    }
     44  }
     45  d3.ascending = d3_ascending;
     46  function d3_ascending(a, b) {
     47    return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
     48  }
     49  d3.descending = function(a, b) {
     50    return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
     51  };
     52  d3.min = function(array, f) {
     53    var i = -1, n = array.length, a, b;
     54    if (arguments.length === 1) {
     55      while (++i < n) if ((b = array[i]) != null && b >= b) {
     56        a = b;
     57        break;
     58      }
     59      while (++i < n) if ((b = array[i]) != null && a > b) a = b;
     60    } else {
     61      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
     62        a = b;
     63        break;
     64      }
     65      while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
     66    }
     67    return a;
     68  };
     69  d3.max = function(array, f) {
     70    var i = -1, n = array.length, a, b;
     71    if (arguments.length === 1) {
     72      while (++i < n) if ((b = array[i]) != null && b >= b) {
     73        a = b;
     74        break;
     75      }
     76      while (++i < n) if ((b = array[i]) != null && b > a) a = b;
     77    } else {
     78      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
     79        a = b;
     80        break;
     81      }
     82      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
     83    }
     84    return a;
     85  };
     86  d3.extent = function(array, f) {
     87    var i = -1, n = array.length, a, b, c;
     88    if (arguments.length === 1) {
     89      while (++i < n) if ((b = array[i]) != null && b >= b) {
     90        a = c = b;
     91        break;
     92      }
     93      while (++i < n) if ((b = array[i]) != null) {
     94        if (a > b) a = b;
     95        if (c < b) c = b;
     96      }
     97    } else {
     98      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
     99        a = c = b;
    100        break;
    101      }
    102      while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
    103        if (a > b) a = b;
    104        if (c < b) c = b;
    105      }
    106    }
    107    return [ a, c ];
    108  };
    109  function d3_number(x) {
    110    return x === null ? NaN : +x;
    111  }
    112  function d3_numeric(x) {
    113    return !isNaN(x);
    114  }
    115  d3.sum = function(array, f) {
    116    var s = 0, n = array.length, a, i = -1;
    117    if (arguments.length === 1) {
    118      while (++i < n) if (d3_numeric(a = +array[i])) s += a;
    119    } else {
    120      while (++i < n) if (d3_numeric(a = +f.call(array, array[i], i))) s += a;
    121    }
    122    return s;
    123  };
    124  d3.mean = function(array, f) {
    125    var s = 0, n = array.length, a, i = -1, j = n;
    126    if (arguments.length === 1) {
    127      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) s += a; else --j;
    128    } else {
    129      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) s += a; else --j;
    130    }
    131    if (j) return s / j;
    132  };
    133  d3.quantile = function(values, p) {
    134    var H = (values.length - 1) * p + 1, h = Math.floor(H), v = +values[h - 1], e = H - h;
    135    return e ? v + e * (values[h] - v) : v;
    136  };
    137  d3.median = function(array, f) {
    138    var numbers = [], n = array.length, a, i = -1;
    139    if (arguments.length === 1) {
    140      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) numbers.push(a);
    141    } else {
    142      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) numbers.push(a);
    143    }
    144    if (numbers.length) return d3.quantile(numbers.sort(d3_ascending), .5);
    145  };
    146  d3.variance = function(array, f) {
    147    var n = array.length, m = 0, a, d, s = 0, i = -1, j = 0;
    148    if (arguments.length === 1) {
    149      while (++i < n) {
    150        if (d3_numeric(a = d3_number(array[i]))) {
    151          d = a - m;
    152          m += d / ++j;
    153          s += d * (a - m);
    154        }
    155      }
    156    } else {
    157      while (++i < n) {
    158        if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) {
    159          d = a - m;
    160          m += d / ++j;
    161          s += d * (a - m);
    162        }
    163      }
    164    }
    165    if (j > 1) return s / (j - 1);
    166  };
    167  d3.deviation = function() {
    168    var v = d3.variance.apply(this, arguments);
    169    return v ? Math.sqrt(v) : v;
    170  };
    171  function d3_bisector(compare) {
    172    return {
    173      left: function(a, x, lo, hi) {
    174        if (arguments.length < 3) lo = 0;
    175        if (arguments.length < 4) hi = a.length;
    176        while (lo < hi) {
    177          var mid = lo + hi >>> 1;
    178          if (compare(a[mid], x) < 0) lo = mid + 1; else hi = mid;
    179        }
    180        return lo;
    181      },
    182      right: function(a, x, lo, hi) {
    183        if (arguments.length < 3) lo = 0;
    184        if (arguments.length < 4) hi = a.length;
    185        while (lo < hi) {
    186          var mid = lo + hi >>> 1;
    187          if (compare(a[mid], x) > 0) hi = mid; else lo = mid + 1;
    188        }
    189        return lo;
    190      }
    191    };
    192  }
    193  var d3_bisect = d3_bisector(d3_ascending);
    194  d3.bisectLeft = d3_bisect.left;
    195  d3.bisect = d3.bisectRight = d3_bisect.right;
    196  d3.bisector = function(f) {
    197    return d3_bisector(f.length === 1 ? function(d, x) {
    198      return d3_ascending(f(d), x);
    199    } : f);
    200  };
    201  d3.shuffle = function(array, i0, i1) {
    202    if ((m = arguments.length) < 3) {
    203      i1 = array.length;
    204      if (m < 2) i0 = 0;
    205    }
    206    var m = i1 - i0, t, i;
    207    while (m) {
    208      i = Math.random() * m-- | 0;
    209      t = array[m + i0], array[m + i0] = array[i + i0], array[i + i0] = t;
    210    }
    211    return array;
    212  };
    213  d3.permute = function(array, indexes) {
    214    var i = indexes.length, permutes = new Array(i);
    215    while (i--) permutes[i] = array[indexes[i]];
    216    return permutes;
    217  };
    218  d3.pairs = function(array) {
    219    var i = 0, n = array.length - 1, p0, p1 = array[0], pairs = new Array(n < 0 ? 0 : n);
    220    while (i < n) pairs[i] = [ p0 = p1, p1 = array[++i] ];
    221    return pairs;
    222  };
    223  d3.transpose = function(matrix) {
    224    if (!(n = matrix.length)) return [];
    225    for (var i = -1, m = d3.min(matrix, d3_transposeLength), transpose = new Array(m); ++i < m; ) {
    226      for (var j = -1, n, row = transpose[i] = new Array(n); ++j < n; ) {
    227        row[j] = matrix[j][i];
    228      }
    229    }
    230    return transpose;
    231  };
    232  function d3_transposeLength(d) {
    233    return d.length;
    234  }
    235  d3.zip = function() {
    236    return d3.transpose(arguments);
    237  };
    238  d3.keys = function(map) {
    239    var keys = [];
    240    for (var key in map) keys.push(key);
    241    return keys;
    242  };
    243  d3.values = function(map) {
    244    var values = [];
    245    for (var key in map) values.push(map[key]);
    246    return values;
    247  };
    248  d3.entries = function(map) {
    249    var entries = [];
    250    for (var key in map) entries.push({
    251      key: key,
    252      value: map[key]
    253    });
    254    return entries;
    255  };
    256  d3.merge = function(arrays) {
    257    var n = arrays.length, m, i = -1, j = 0, merged, array;
    258    while (++i < n) j += arrays[i].length;
    259    merged = new Array(j);
    260    while (--n >= 0) {
    261      array = arrays[n];
    262      m = array.length;
    263      while (--m >= 0) {
    264        merged[--j] = array[m];
    265      }
    266    }
    267    return merged;
    268  };
    269  var abs = Math.abs;
    270  d3.range = function(start, stop, step) {
    271    if (arguments.length < 3) {
    272      step = 1;
    273      if (arguments.length < 2) {
    274        stop = start;
    275        start = 0;
    276      }
    277    }
    278    if ((stop - start) / step === Infinity) throw new Error("infinite range");
    279    var range = [], k = d3_range_integerScale(abs(step)), i = -1, j;
    280    start *= k, stop *= k, step *= k;
    281    if (step < 0) while ((j = start + step * ++i) > stop) range.push(j / k); else while ((j = start + step * ++i) < stop) range.push(j / k);
    282    return range;
    283  };
    284  function d3_range_integerScale(x) {
    285    var k = 1;
    286    while (x * k % 1) k *= 10;
    287    return k;
    288  }
    289  function d3_class(ctor, properties) {
    290    for (var key in properties) {
    291      Object.defineProperty(ctor.prototype, key, {
    292        value: properties[key],
    293        enumerable: false
    294      });
    295    }
    296  }
    297  d3.map = function(object, f) {
    298    var map = new d3_Map();
    299    if (object instanceof d3_Map) {
    300      object.forEach(function(key, value) {
    301        map.set(key, value);
    302      });
    303    } else if (Array.isArray(object)) {
    304      var i = -1, n = object.length, o;
    305      if (arguments.length === 1) while (++i < n) map.set(i, object[i]); else while (++i < n) map.set(f.call(object, o = object[i], i), o);
    306    } else {
    307      for (var key in object) map.set(key, object[key]);
    308    }
    309    return map;
    310  };
    311  function d3_Map() {
    312    this._ = Object.create(null);
    313  }
    314  var d3_map_proto = "__proto__", d3_map_zero = "\x00";
    315  d3_class(d3_Map, {
    316    has: d3_map_has,
    317    get: function(key) {
    318      return this._[d3_map_escape(key)];
    319    },
    320    set: function(key, value) {
    321      return this._[d3_map_escape(key)] = value;
    322    },
    323    remove: d3_map_remove,
    324    keys: d3_map_keys,
    325    values: function() {
    326      var values = [];
    327      for (var key in this._) values.push(this._[key]);
    328      return values;
    329    },
    330    entries: function() {
    331      var entries = [];
    332      for (var key in this._) entries.push({
    333        key: d3_map_unescape(key),
    334        value: this._[key]
    335      });
    336      return entries;
    337    },
    338    size: d3_map_size,
    339    empty: d3_map_empty,
    340    forEach: function(f) {
    341      for (var key in this._) f.call(this, d3_map_unescape(key), this._[key]);
    342    }
    343  });
    344  function d3_map_escape(key) {
    345    return (key += "") === d3_map_proto || key[0] === d3_map_zero ? d3_map_zero + key : key;
    346  }
    347  function d3_map_unescape(key) {
    348    return (key += "")[0] === d3_map_zero ? key.slice(1) : key;
    349  }
    350  function d3_map_has(key) {
    351    return d3_map_escape(key) in this._;
    352  }
    353  function d3_map_remove(key) {
    354    return (key = d3_map_escape(key)) in this._ && delete this._[key];
    355  }
    356  function d3_map_keys() {
    357    var keys = [];
    358    for (var key in this._) keys.push(d3_map_unescape(key));
    359    return keys;
    360  }
    361  function d3_map_size() {
    362    var size = 0;
    363    for (var key in this._) ++size;
    364    return size;
    365  }
    366  function d3_map_empty() {
    367    for (var key in this._) return false;
    368    return true;
    369  }
    370  d3.nest = function() {
    371    var nest = {}, keys = [], sortKeys = [], sortValues, rollup;
    372    function map(mapType, array, depth) {
    373      if (depth >= keys.length) return rollup ? rollup.call(nest, array) : sortValues ? array.sort(sortValues) : array;
    374      var i = -1, n = array.length, key = keys[depth++], keyValue, object, setter, valuesByKey = new d3_Map(), values;
    375      while (++i < n) {
    376        if (values = valuesByKey.get(keyValue = key(object = array[i]))) {
    377          values.push(object);
    378        } else {
    379          valuesByKey.set(keyValue, [ object ]);
    380        }
    381      }
    382      if (mapType) {
    383        object = mapType();
    384        setter = function(keyValue, values) {
    385          object.set(keyValue, map(mapType, values, depth));
    386        };
    387      } else {
    388        object = {};
    389        setter = function(keyValue, values) {
    390          object[keyValue] = map(mapType, values, depth);
    391        };
    392      }
    393      valuesByKey.forEach(setter);
    394      return object;
    395    }
    396    function entries(map, depth) {
    397      if (depth >= keys.length) return map;
    398      var array = [], sortKey = sortKeys[depth++];
    399      map.forEach(function(key, keyMap) {
    400        array.push({
    401          key: key,
    402          values: entries(keyMap, depth)
    403        });
    404      });
    405      return sortKey ? array.sort(function(a, b) {
    406        return sortKey(a.key, b.key);
    407      }) : array;
    408    }
    409    nest.map = function(array, mapType) {
    410      return map(mapType, array, 0);
    411    };
    412    nest.entries = function(array) {
    413      return entries(map(d3.map, array, 0), 0);
    414    };
    415    nest.key = function(d) {
    416      keys.push(d);
    417      return nest;
    418    };
    419    nest.sortKeys = function(order) {
    420      sortKeys[keys.length - 1] = order;
    421      return nest;
    422    };
    423    nest.sortValues = function(order) {
    424      sortValues = order;
    425      return nest;
    426    };
    427    nest.rollup = function(f) {
    428      rollup = f;
    429      return nest;
    430    };
    431    return nest;
    432  };
    433  d3.set = function(array) {
    434    var set = new d3_Set();
    435    if (array) for (var i = 0, n = array.length; i < n; ++i) set.add(array[i]);
    436    return set;
    437  };
    438  function d3_Set() {
    439    this._ = Object.create(null);
    440  }
    441  d3_class(d3_Set, {
    442    has: d3_map_has,
    443    add: function(key) {
    444      this._[d3_map_escape(key += "")] = true;
    445      return key;
    446    },
    447    remove: d3_map_remove,
    448    values: d3_map_keys,
    449    size: d3_map_size,
    450    empty: d3_map_empty,
    451    forEach: function(f) {
    452      for (var key in this._) f.call(this, d3_map_unescape(key));
    453    }
    454  });
    455  d3.behavior = {};
    456  function d3_identity(d) {
    457    return d;
    458  }
    459  d3.rebind = function(target, source) {
    460    var i = 1, n = arguments.length, method;
    461    while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
    462    return target;
    463  };
    464  function d3_rebind(target, source, method) {
    465    return function() {
    466      var value = method.apply(source, arguments);
    467      return value === source ? target : value;
    468    };
    469  }
    470  function d3_vendorSymbol(object, name) {
    471    if (name in object) return name;
    472    name = name.charAt(0).toUpperCase() + name.slice(1);
    473    for (var i = 0, n = d3_vendorPrefixes.length; i < n; ++i) {
    474      var prefixName = d3_vendorPrefixes[i] + name;
    475      if (prefixName in object) return prefixName;
    476    }
    477  }
    478  var d3_vendorPrefixes = [ "webkit", "ms", "moz", "Moz", "o", "O" ];
    479  function d3_noop() {}
    480  d3.dispatch = function() {
    481    var dispatch = new d3_dispatch(), i = -1, n = arguments.length;
    482    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
    483    return dispatch;
    484  };
    485  function d3_dispatch() {}
    486  d3_dispatch.prototype.on = function(type, listener) {
    487    var i = type.indexOf("."), name = "";
    488    if (i >= 0) {
    489      name = type.slice(i + 1);
    490      type = type.slice(0, i);
    491    }
    492    if (type) return arguments.length < 2 ? this[type].on(name) : this[type].on(name, listener);
    493    if (arguments.length === 2) {
    494      if (listener == null) for (type in this) {
    495        if (this.hasOwnProperty(type)) this[type].on(name, null);
    496      }
    497      return this;
    498    }
    499  };
    500  function d3_dispatch_event(dispatch) {
    501    var listeners = [], listenerByName = new d3_Map();
    502    function event() {
    503      var z = listeners, i = -1, n = z.length, l;
    504      while (++i < n) if (l = z[i].on) l.apply(this, arguments);
    505      return dispatch;
    506    }
    507    event.on = function(name, listener) {
    508      var l = listenerByName.get(name), i;
    509      if (arguments.length < 2) return l && l.on;
    510      if (l) {
    511        l.on = null;
    512        listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
    513        listenerByName.remove(name);
    514      }
    515      if (listener) listeners.push(listenerByName.set(name, {
    516        on: listener
    517      }));
    518      return dispatch;
    519    };
    520    return event;
    521  }
    522  d3.event = null;
    523  function d3_eventPreventDefault() {
    524    d3.event.preventDefault();
    525  }
    526  function d3_eventSource() {
    527    var e = d3.event, s;
    528    while (s = e.sourceEvent) e = s;
    529    return e;
    530  }
    531  function d3_eventDispatch(target) {
    532    var dispatch = new d3_dispatch(), i = 0, n = arguments.length;
    533    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
    534    dispatch.of = function(thiz, argumentz) {
    535      return function(e1) {
    536        try {
    537          var e0 = e1.sourceEvent = d3.event;
    538          e1.target = target;
    539          d3.event = e1;
    540          dispatch[e1.type].apply(thiz, argumentz);
    541        } finally {
    542          d3.event = e0;
    543        }
    544      };
    545    };
    546    return dispatch;
    547  }
    548  d3.requote = function(s) {
    549    return s.replace(d3_requote_re, "\\$&");
    550  };
    551  var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
    552  var d3_subclass = {}.__proto__ ? function(object, prototype) {
    553    object.__proto__ = prototype;
    554  } : function(object, prototype) {
    555    for (var property in prototype) object[property] = prototype[property];
    556  };
    557  function d3_selection(groups) {
    558    d3_subclass(groups, d3_selectionPrototype);
    559    return groups;
    560  }
    561  var d3_select = function(s, n) {
    562    return n.querySelector(s);
    563  }, d3_selectAll = function(s, n) {
    564    return n.querySelectorAll(s);
    565  }, d3_selectMatches = function(n, s) {
    566    var d3_selectMatcher = n.matches || n[d3_vendorSymbol(n, "matchesSelector")];
    567    d3_selectMatches = function(n, s) {
    568      return d3_selectMatcher.call(n, s);
    569    };
    570    return d3_selectMatches(n, s);
    571  };
    572  if (typeof Sizzle === "function") {
    573    d3_select = function(s, n) {
    574      return Sizzle(s, n)[0] || null;
    575    };
    576    d3_selectAll = Sizzle;
    577    d3_selectMatches = Sizzle.matchesSelector;
    578  }
    579  d3.selection = function() {
    580    return d3.select(d3_document.documentElement);
    581  };
    582  var d3_selectionPrototype = d3.selection.prototype = [];
    583  d3_selectionPrototype.select = function(selector) {
    584    var subgroups = [], subgroup, subnode, group, node;
    585    selector = d3_selection_selector(selector);
    586    for (var j = -1, m = this.length; ++j < m; ) {
    587      subgroups.push(subgroup = []);
    588      subgroup.parentNode = (group = this[j]).parentNode;
    589      for (var i = -1, n = group.length; ++i < n; ) {
    590        if (node = group[i]) {
    591          subgroup.push(subnode = selector.call(node, node.__data__, i, j));
    592          if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
    593        } else {
    594          subgroup.push(null);
    595        }
    596      }
    597    }
    598    return d3_selection(subgroups);
    599  };
    600  function d3_selection_selector(selector) {
    601    return typeof selector === "function" ? selector : function() {
    602      return d3_select(selector, this);
    603    };
    604  }
    605  d3_selectionPrototype.selectAll = function(selector) {
    606    var subgroups = [], subgroup, node;
    607    selector = d3_selection_selectorAll(selector);
    608    for (var j = -1, m = this.length; ++j < m; ) {
    609      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
    610        if (node = group[i]) {
    611          subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i, j)));
    612          subgroup.parentNode = node;
    613        }
    614      }
    615    }
    616    return d3_selection(subgroups);
    617  };
    618  function d3_selection_selectorAll(selector) {
    619    return typeof selector === "function" ? selector : function() {
    620      return d3_selectAll(selector, this);
    621    };
    622  }
    623  var d3_nsXhtml = "http://www.w3.org/1999/xhtml";
    624  var d3_nsPrefix = {
    625    svg: "http://www.w3.org/2000/svg",
    626    xhtml: d3_nsXhtml,
    627    xlink: "http://www.w3.org/1999/xlink",
    628    xml: "http://www.w3.org/XML/1998/namespace",
    629    xmlns: "http://www.w3.org/2000/xmlns/"
    630  };
    631  d3.ns = {
    632    prefix: d3_nsPrefix,
    633    qualify: function(name) {
    634      var i = name.indexOf(":"), prefix = name;
    635      if (i >= 0 && (prefix = name.slice(0, i)) !== "xmlns") name = name.slice(i + 1);
    636      return d3_nsPrefix.hasOwnProperty(prefix) ? {
    637        space: d3_nsPrefix[prefix],
    638        local: name
    639      } : name;
    640    }
    641  };
    642  d3_selectionPrototype.attr = function(name, value) {
    643    if (arguments.length < 2) {
    644      if (typeof name === "string") {
    645        var node = this.node();
    646        name = d3.ns.qualify(name);
    647        return name.local ? node.getAttributeNS(name.space, name.local) : node.getAttribute(name);
    648      }
    649      for (value in name) this.each(d3_selection_attr(value, name[value]));
    650      return this;
    651    }
    652    return this.each(d3_selection_attr(name, value));
    653  };
    654  function d3_selection_attr(name, value) {
    655    name = d3.ns.qualify(name);
    656    function attrNull() {
    657      this.removeAttribute(name);
    658    }
    659    function attrNullNS() {
    660      this.removeAttributeNS(name.space, name.local);
    661    }
    662    function attrConstant() {
    663      this.setAttribute(name, value);
    664    }
    665    function attrConstantNS() {
    666      this.setAttributeNS(name.space, name.local, value);
    667    }
    668    function attrFunction() {
    669      var x = value.apply(this, arguments);
    670      if (x == null) this.removeAttribute(name); else this.setAttribute(name, x);
    671    }
    672    function attrFunctionNS() {
    673      var x = value.apply(this, arguments);
    674      if (x == null) this.removeAttributeNS(name.space, name.local); else this.setAttributeNS(name.space, name.local, x);
    675    }
    676    return value == null ? name.local ? attrNullNS : attrNull : typeof value === "function" ? name.local ? attrFunctionNS : attrFunction : name.local ? attrConstantNS : attrConstant;
    677  }
    678  function d3_collapse(s) {
    679    return s.trim().replace(/\s+/g, " ");
    680  }
    681  d3_selectionPrototype.classed = function(name, value) {
    682    if (arguments.length < 2) {
    683      if (typeof name === "string") {
    684        var node = this.node(), n = (name = d3_selection_classes(name)).length, i = -1;
    685        if (value = node.classList) {
    686          while (++i < n) if (!value.contains(name[i])) return false;
    687        } else {
    688          value = node.getAttribute("class");
    689          while (++i < n) if (!d3_selection_classedRe(name[i]).test(value)) return false;
    690        }
    691        return true;
    692      }
    693      for (value in name) this.each(d3_selection_classed(value, name[value]));
    694      return this;
    695    }
    696    return this.each(d3_selection_classed(name, value));
    697  };
    698  function d3_selection_classedRe(name) {
    699    return new RegExp("(?:^|\\s+)" + d3.requote(name) + "(?:\\s+|$)", "g");
    700  }
    701  function d3_selection_classes(name) {
    702    return (name + "").trim().split(/^|\s+/);
    703  }
    704  function d3_selection_classed(name, value) {
    705    name = d3_selection_classes(name).map(d3_selection_classedName);
    706    var n = name.length;
    707    function classedConstant() {
    708      var i = -1;
    709      while (++i < n) name[i](this, value);
    710    }
    711    function classedFunction() {
    712      var i = -1, x = value.apply(this, arguments);
    713      while (++i < n) name[i](this, x);
    714    }
    715    return typeof value === "function" ? classedFunction : classedConstant;
    716  }
    717  function d3_selection_classedName(name) {
    718    var re = d3_selection_classedRe(name);
    719    return function(node, value) {
    720      if (c = node.classList) return value ? c.add(name) : c.remove(name);
    721      var c = node.getAttribute("class") || "";
    722      if (value) {
    723        re.lastIndex = 0;
    724        if (!re.test(c)) node.setAttribute("class", d3_collapse(c + " " + name));
    725      } else {
    726        node.setAttribute("class", d3_collapse(c.replace(re, " ")));
    727      }
    728    };
    729  }
    730  d3_selectionPrototype.style = function(name, value, priority) {
    731    var n = arguments.length;
    732    if (n < 3) {
    733      if (typeof name !== "string") {
    734        if (n < 2) value = "";
    735        for (priority in name) this.each(d3_selection_style(priority, name[priority], value));
    736        return this;
    737      }
    738      if (n < 2) {
    739        var node = this.node();
    740        return d3_window(node).getComputedStyle(node, null).getPropertyValue(name);
    741      }
    742      priority = "";
    743    }
    744    return this.each(d3_selection_style(name, value, priority));
    745  };
    746  function d3_selection_style(name, value, priority) {
    747    function styleNull() {
    748      this.style.removeProperty(name);
    749    }
    750    function styleConstant() {
    751      this.style.setProperty(name, value, priority);
    752    }
    753    function styleFunction() {
    754      var x = value.apply(this, arguments);
    755      if (x == null) this.style.removeProperty(name); else this.style.setProperty(name, x, priority);
    756    }
    757    return value == null ? styleNull : typeof value === "function" ? styleFunction : styleConstant;
    758  }
    759  d3_selectionPrototype.property = function(name, value) {
    760    if (arguments.length < 2) {
    761      if (typeof name === "string") return this.node()[name];
    762      for (value in name) this.each(d3_selection_property(value, name[value]));
    763      return this;
    764    }
    765    return this.each(d3_selection_property(name, value));
    766  };
    767  function d3_selection_property(name, value) {
    768    function propertyNull() {
    769      delete this[name];
    770    }
    771    function propertyConstant() {
    772      this[name] = value;
    773    }
    774    function propertyFunction() {
    775      var x = value.apply(this, arguments);
    776      if (x == null) delete this[name]; else this[name] = x;
    777    }
    778    return value == null ? propertyNull : typeof value === "function" ? propertyFunction : propertyConstant;
    779  }
    780  d3_selectionPrototype.text = function(value) {
    781    return arguments.length ? this.each(typeof value === "function" ? function() {
    782      var v = value.apply(this, arguments);
    783      this.textContent = v == null ? "" : v;
    784    } : value == null ? function() {
    785      this.textContent = "";
    786    } : function() {
    787      this.textContent = value;
    788    }) : this.node().textContent;
    789  };
    790  d3_selectionPrototype.html = function(value) {
    791    return arguments.length ? this.each(typeof value === "function" ? function() {
    792      var v = value.apply(this, arguments);
    793      this.innerHTML = v == null ? "" : v;
    794    } : value == null ? function() {
    795      this.innerHTML = "";
    796    } : function() {
    797      this.innerHTML = value;
    798    }) : this.node().innerHTML;
    799  };
    800  d3_selectionPrototype.append = function(name) {
    801    name = d3_selection_creator(name);
    802    return this.select(function() {
    803      return this.appendChild(name.apply(this, arguments));
    804    });
    805  };
    806  function d3_selection_creator(name) {
    807    function create() {
    808      var document = this.ownerDocument, namespace = this.namespaceURI;
    809      return namespace === d3_nsXhtml && document.documentElement.namespaceURI === d3_nsXhtml ? document.createElement(name) : document.createElementNS(namespace, name);
    810    }
    811    function createNS() {
    812      return this.ownerDocument.createElementNS(name.space, name.local);
    813    }
    814    return typeof name === "function" ? name : (name = d3.ns.qualify(name)).local ? createNS : create;
    815  }
    816  d3_selectionPrototype.insert = function(name, before) {
    817    name = d3_selection_creator(name);
    818    before = d3_selection_selector(before);
    819    return this.select(function() {
    820      return this.insertBefore(name.apply(this, arguments), before.apply(this, arguments) || null);
    821    });
    822  };
    823  d3_selectionPrototype.remove = function() {
    824    return this.each(d3_selectionRemove);
    825  };
    826  function d3_selectionRemove() {
    827    var parent = this.parentNode;
    828    if (parent) parent.removeChild(this);
    829  }
    830  d3_selectionPrototype.data = function(value, key) {
    831    var i = -1, n = this.length, group, node;
    832    if (!arguments.length) {
    833      value = new Array(n = (group = this[0]).length);
    834      while (++i < n) {
    835        if (node = group[i]) {
    836          value[i] = node.__data__;
    837        }
    838      }
    839      return value;
    840    }
    841    function bind(group, groupData) {
    842      var i, n = group.length, m = groupData.length, n0 = Math.min(n, m), updateNodes = new Array(m), enterNodes = new Array(m), exitNodes = new Array(n), node, nodeData;
    843      if (key) {
    844        var nodeByKeyValue = new d3_Map(), keyValues = new Array(n), keyValue;
    845        for (i = -1; ++i < n; ) {
    846          if (node = group[i]) {
    847            if (nodeByKeyValue.has(keyValue = key.call(node, node.__data__, i))) {
    848              exitNodes[i] = node;
    849            } else {
    850              nodeByKeyValue.set(keyValue, node);
    851            }
    852            keyValues[i] = keyValue;
    853          }
    854        }
    855        for (i = -1; ++i < m; ) {
    856          if (!(node = nodeByKeyValue.get(keyValue = key.call(groupData, nodeData = groupData[i], i)))) {
    857            enterNodes[i] = d3_selection_dataNode(nodeData);
    858          } else if (node !== true) {
    859            updateNodes[i] = node;
    860            node.__data__ = nodeData;
    861          }
    862          nodeByKeyValue.set(keyValue, true);
    863        }
    864        for (i = -1; ++i < n; ) {
    865          if (i in keyValues && nodeByKeyValue.get(keyValues[i]) !== true) {
    866            exitNodes[i] = group[i];
    867          }
    868        }
    869      } else {
    870        for (i = -1; ++i < n0; ) {
    871          node = group[i];
    872          nodeData = groupData[i];
    873          if (node) {
    874            node.__data__ = nodeData;
    875            updateNodes[i] = node;
    876          } else {
    877            enterNodes[i] = d3_selection_dataNode(nodeData);
    878          }
    879        }
    880        for (;i < m; ++i) {
    881          enterNodes[i] = d3_selection_dataNode(groupData[i]);
    882        }
    883        for (;i < n; ++i) {
    884          exitNodes[i] = group[i];
    885        }
    886      }
    887      enterNodes.update = updateNodes;
    888      enterNodes.parentNode = updateNodes.parentNode = exitNodes.parentNode = group.parentNode;
    889      enter.push(enterNodes);
    890      update.push(updateNodes);
    891      exit.push(exitNodes);
    892    }
    893    var enter = d3_selection_enter([]), update = d3_selection([]), exit = d3_selection([]);
    894    if (typeof value === "function") {
    895      while (++i < n) {
    896        bind(group = this[i], value.call(group, group.parentNode.__data__, i));
    897      }
    898    } else {
    899      while (++i < n) {
    900        bind(group = this[i], value);
    901      }
    902    }
    903    update.enter = function() {
    904      return enter;
    905    };
    906    update.exit = function() {
    907      return exit;
    908    };
    909    return update;
    910  };
    911  function d3_selection_dataNode(data) {
    912    return {
    913      __data__: data
    914    };
    915  }
    916  d3_selectionPrototype.datum = function(value) {
    917    return arguments.length ? this.property("__data__", value) : this.property("__data__");
    918  };
    919  d3_selectionPrototype.filter = function(filter) {
    920    var subgroups = [], subgroup, group, node;
    921    if (typeof filter !== "function") filter = d3_selection_filter(filter);
    922    for (var j = 0, m = this.length; j < m; j++) {
    923      subgroups.push(subgroup = []);
    924      subgroup.parentNode = (group = this[j]).parentNode;
    925      for (var i = 0, n = group.length; i < n; i++) {
    926        if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
    927          subgroup.push(node);
    928        }
    929      }
    930    }
    931    return d3_selection(subgroups);
    932  };
    933  function d3_selection_filter(selector) {
    934    return function() {
    935      return d3_selectMatches(this, selector);
    936    };
    937  }
    938  d3_selectionPrototype.order = function() {
    939    for (var j = -1, m = this.length; ++j < m; ) {
    940      for (var group = this[j], i = group.length - 1, next = group[i], node; --i >= 0; ) {
    941        if (node = group[i]) {
    942          if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next);
    943          next = node;
    944        }
    945      }
    946    }
    947    return this;
    948  };
    949  d3_selectionPrototype.sort = function(comparator) {
    950    comparator = d3_selection_sortComparator.apply(this, arguments);
    951    for (var j = -1, m = this.length; ++j < m; ) this[j].sort(comparator);
    952    return this.order();
    953  };
    954  function d3_selection_sortComparator(comparator) {
    955    if (!arguments.length) comparator = d3_ascending;
    956    return function(a, b) {
    957      return a && b ? comparator(a.__data__, b.__data__) : !a - !b;
    958    };
    959  }
    960  d3_selectionPrototype.each = function(callback) {
    961    return d3_selection_each(this, function(node, i, j) {
    962      callback.call(node, node.__data__, i, j);
    963    });
    964  };
    965  function d3_selection_each(groups, callback) {
    966    for (var j = 0, m = groups.length; j < m; j++) {
    967      for (var group = groups[j], i = 0, n = group.length, node; i < n; i++) {
    968        if (node = group[i]) callback(node, i, j);
    969      }
    970    }
    971    return groups;
    972  }
    973  d3_selectionPrototype.call = function(callback) {
    974    var args = d3_array(arguments);
    975    callback.apply(args[0] = this, args);
    976    return this;
    977  };
    978  d3_selectionPrototype.empty = function() {
    979    return !this.node();
    980  };
    981  d3_selectionPrototype.node = function() {
    982    for (var j = 0, m = this.length; j < m; j++) {
    983      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
    984        var node = group[i];
    985        if (node) return node;
    986      }
    987    }
    988    return null;
    989  };
    990  d3_selectionPrototype.size = function() {
    991    var n = 0;
    992    d3_selection_each(this, function() {
    993      ++n;
    994    });
    995    return n;
    996  };
    997  function d3_selection_enter(selection) {
    998    d3_subclass(selection, d3_selection_enterPrototype);
    999    return selection;
   1000  }
   1001  var d3_selection_enterPrototype = [];
   1002  d3.selection.enter = d3_selection_enter;
   1003  d3.selection.enter.prototype = d3_selection_enterPrototype;
   1004  d3_selection_enterPrototype.append = d3_selectionPrototype.append;
   1005  d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
   1006  d3_selection_enterPrototype.node = d3_selectionPrototype.node;
   1007  d3_selection_enterPrototype.call = d3_selectionPrototype.call;
   1008  d3_selection_enterPrototype.size = d3_selectionPrototype.size;
   1009  d3_selection_enterPrototype.select = function(selector) {
   1010    var subgroups = [], subgroup, subnode, upgroup, group, node;
   1011    for (var j = -1, m = this.length; ++j < m; ) {
   1012      upgroup = (group = this[j]).update;
   1013      subgroups.push(subgroup = []);
   1014      subgroup.parentNode = group.parentNode;
   1015      for (var i = -1, n = group.length; ++i < n; ) {
   1016        if (node = group[i]) {
   1017          subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i, j));
   1018          subnode.__data__ = node.__data__;
   1019        } else {
   1020          subgroup.push(null);
   1021        }
   1022      }
   1023    }
   1024    return d3_selection(subgroups);
   1025  };
   1026  d3_selection_enterPrototype.insert = function(name, before) {
   1027    if (arguments.length < 2) before = d3_selection_enterInsertBefore(this);
   1028    return d3_selectionPrototype.insert.call(this, name, before);
   1029  };
   1030  function d3_selection_enterInsertBefore(enter) {
   1031    var i0, j0;
   1032    return function(d, i, j) {
   1033      var group = enter[j].update, n = group.length, node;
   1034      if (j != j0) j0 = j, i0 = 0;
   1035      if (i >= i0) i0 = i + 1;
   1036      while (!(node = group[i0]) && ++i0 < n) ;
   1037      return node;
   1038    };
   1039  }
   1040  d3.select = function(node) {
   1041    var group;
   1042    if (typeof node === "string") {
   1043      group = [ d3_select(node, d3_document) ];
   1044      group.parentNode = d3_document.documentElement;
   1045    } else {
   1046      group = [ node ];
   1047      group.parentNode = d3_documentElement(node);
   1048    }
   1049    return d3_selection([ group ]);
   1050  };
   1051  d3.selectAll = function(nodes) {
   1052    var group;
   1053    if (typeof nodes === "string") {
   1054      group = d3_array(d3_selectAll(nodes, d3_document));
   1055      group.parentNode = d3_document.documentElement;
   1056    } else {
   1057      group = d3_array(nodes);
   1058      group.parentNode = null;
   1059    }
   1060    return d3_selection([ group ]);
   1061  };
   1062  d3_selectionPrototype.on = function(type, listener, capture) {
   1063    var n = arguments.length;
   1064    if (n < 3) {
   1065      if (typeof type !== "string") {
   1066        if (n < 2) listener = false;
   1067        for (capture in type) this.each(d3_selection_on(capture, type[capture], listener));
   1068        return this;
   1069      }
   1070      if (n < 2) return (n = this.node()["__on" + type]) && n._;
   1071      capture = false;
   1072    }
   1073    return this.each(d3_selection_on(type, listener, capture));
   1074  };
   1075  function d3_selection_on(type, listener, capture) {
   1076    var name = "__on" + type, i = type.indexOf("."), wrap = d3_selection_onListener;
   1077    if (i > 0) type = type.slice(0, i);
   1078    var filter = d3_selection_onFilters.get(type);
   1079    if (filter) type = filter, wrap = d3_selection_onFilter;
   1080    function onRemove() {
   1081      var l = this[name];
   1082      if (l) {
   1083        this.removeEventListener(type, l, l.$);
   1084        delete this[name];
   1085      }
   1086    }
   1087    function onAdd() {
   1088      var l = wrap(listener, d3_array(arguments));
   1089      onRemove.call(this);
   1090      this.addEventListener(type, this[name] = l, l.$ = capture);
   1091      l._ = listener;
   1092    }
   1093    function removeAll() {
   1094      var re = new RegExp("^__on([^.]+)" + d3.requote(type) + "$"), match;
   1095      for (var name in this) {
   1096        if (match = name.match(re)) {
   1097          var l = this[name];
   1098          this.removeEventListener(match[1], l, l.$);
   1099          delete this[name];
   1100        }
   1101      }
   1102    }
   1103    return i ? listener ? onAdd : onRemove : listener ? d3_noop : removeAll;
   1104  }
   1105  var d3_selection_onFilters = d3.map({
   1106    mouseenter: "mouseover",
   1107    mouseleave: "mouseout"
   1108  });
   1109  if (d3_document) {
   1110    d3_selection_onFilters.forEach(function(k) {
   1111      if ("on" + k in d3_document) d3_selection_onFilters.remove(k);
   1112    });
   1113  }
   1114  function d3_selection_onListener(listener, argumentz) {
   1115    return function(e) {
   1116      var o = d3.event;
   1117      d3.event = e;
   1118      argumentz[0] = this.__data__;
   1119      try {
   1120        listener.apply(this, argumentz);
   1121      } finally {
   1122        d3.event = o;
   1123      }
   1124    };
   1125  }
   1126  function d3_selection_onFilter(listener, argumentz) {
   1127    var l = d3_selection_onListener(listener, argumentz);
   1128    return function(e) {
   1129      var target = this, related = e.relatedTarget;
   1130      if (!related || related !== target && !(related.compareDocumentPosition(target) & 8)) {
   1131        l.call(target, e);
   1132      }
   1133    };
   1134  }
   1135  var d3_event_dragSelect, d3_event_dragId = 0;
   1136  function d3_event_dragSuppress(node) {
   1137    var name = ".dragsuppress-" + ++d3_event_dragId, click = "click" + name, w = d3.select(d3_window(node)).on("touchmove" + name, d3_eventPreventDefault).on("dragstart" + name, d3_eventPreventDefault).on("selectstart" + name, d3_eventPreventDefault);
   1138    if (d3_event_dragSelect == null) {
   1139      d3_event_dragSelect = "onselectstart" in node ? false : d3_vendorSymbol(node.style, "userSelect");
   1140    }
   1141    if (d3_event_dragSelect) {
   1142      var style = d3_documentElement(node).style, select = style[d3_event_dragSelect];
   1143      style[d3_event_dragSelect] = "none";
   1144    }
   1145    return function(suppressClick) {
   1146      w.on(name, null);
   1147      if (d3_event_dragSelect) style[d3_event_dragSelect] = select;
   1148      if (suppressClick) {
   1149        var off = function() {
   1150          w.on(click, null);
   1151        };
   1152        w.on(click, function() {
   1153          d3_eventPreventDefault();
   1154          off();
   1155        }, true);
   1156        setTimeout(off, 0);
   1157      }
   1158    };
   1159  }
   1160  d3.mouse = function(container) {
   1161    return d3_mousePoint(container, d3_eventSource());
   1162  };
   1163  var d3_mouse_bug44083 = this.navigator && /WebKit/.test(this.navigator.userAgent) ? -1 : 0;
   1164  function d3_mousePoint(container, e) {
   1165    if (e.changedTouches) e = e.changedTouches[0];
   1166    var svg = container.ownerSVGElement || container;
   1167    if (svg.createSVGPoint) {
   1168      var point = svg.createSVGPoint();
   1169      if (d3_mouse_bug44083 < 0) {
   1170        var window = d3_window(container);
   1171        if (window.scrollX || window.scrollY) {
   1172          svg = d3.select("body").append("svg").style({
   1173            position: "absolute",
   1174            top: 0,
   1175            left: 0,
   1176            margin: 0,
   1177            padding: 0,
   1178            border: "none"
   1179          }, "important");
   1180          var ctm = svg[0][0].getScreenCTM();
   1181          d3_mouse_bug44083 = !(ctm.f || ctm.e);
   1182          svg.remove();
   1183        }
   1184      }
   1185      if (d3_mouse_bug44083) point.x = e.pageX, point.y = e.pageY; else point.x = e.clientX, 
   1186      point.y = e.clientY;
   1187      point = point.matrixTransform(container.getScreenCTM().inverse());
   1188      return [ point.x, point.y ];
   1189    }
   1190    var rect = container.getBoundingClientRect();
   1191    return [ e.clientX - rect.left - container.clientLeft, e.clientY - rect.top - container.clientTop ];
   1192  }
   1193  d3.touch = function(container, touches, identifier) {
   1194    if (arguments.length < 3) identifier = touches, touches = d3_eventSource().changedTouches;
   1195    if (touches) for (var i = 0, n = touches.length, touch; i < n; ++i) {
   1196      if ((touch = touches[i]).identifier === identifier) {
   1197        return d3_mousePoint(container, touch);
   1198      }
   1199    }
   1200  };
   1201  d3.behavior.drag = function() {
   1202    var event = d3_eventDispatch(drag, "drag", "dragstart", "dragend"), origin = null, mousedown = dragstart(d3_noop, d3.mouse, d3_window, "mousemove", "mouseup"), touchstart = dragstart(d3_behavior_dragTouchId, d3.touch, d3_identity, "touchmove", "touchend");
   1203    function drag() {
   1204      this.on("mousedown.drag", mousedown).on("touchstart.drag", touchstart);
   1205    }
   1206    function dragstart(id, position, subject, move, end) {
   1207      return function() {
   1208        var that = this, target = d3.event.target.correspondingElement || d3.event.target, parent = that.parentNode, dispatch = event.of(that, arguments), dragged = 0, dragId = id(), dragName = ".drag" + (dragId == null ? "" : "-" + dragId), dragOffset, dragSubject = d3.select(subject(target)).on(move + dragName, moved).on(end + dragName, ended), dragRestore = d3_event_dragSuppress(target), position0 = position(parent, dragId);
   1209        if (origin) {
   1210          dragOffset = origin.apply(that, arguments);
   1211          dragOffset = [ dragOffset.x - position0[0], dragOffset.y - position0[1] ];
   1212        } else {
   1213          dragOffset = [ 0, 0 ];
   1214        }
   1215        dispatch({
   1216          type: "dragstart"
   1217        });
   1218        function moved() {
   1219          var position1 = position(parent, dragId), dx, dy;
   1220          if (!position1) return;
   1221          dx = position1[0] - position0[0];
   1222          dy = position1[1] - position0[1];
   1223          dragged |= dx | dy;
   1224          position0 = position1;
   1225          dispatch({
   1226            type: "drag",
   1227            x: position1[0] + dragOffset[0],
   1228            y: position1[1] + dragOffset[1],
   1229            dx: dx,
   1230            dy: dy
   1231          });
   1232        }
   1233        function ended() {
   1234          if (!position(parent, dragId)) return;
   1235          dragSubject.on(move + dragName, null).on(end + dragName, null);
   1236          dragRestore(dragged);
   1237          dispatch({
   1238            type: "dragend"
   1239          });
   1240        }
   1241      };
   1242    }
   1243    drag.origin = function(x) {
   1244      if (!arguments.length) return origin;
   1245      origin = x;
   1246      return drag;
   1247    };
   1248    return d3.rebind(drag, event, "on");
   1249  };
   1250  function d3_behavior_dragTouchId() {
   1251    return d3.event.changedTouches[0].identifier;
   1252  }
   1253  d3.touches = function(container, touches) {
   1254    if (arguments.length < 2) touches = d3_eventSource().touches;
   1255    return touches ? d3_array(touches).map(function(touch) {
   1256      var point = d3_mousePoint(container, touch);
   1257      point.identifier = touch.identifier;
   1258      return point;
   1259    }) : [];
   1260  };
   1261  var ε = 1e-6, ε2 = ε * ε, π = Math.PI, τ = 2 * π, τε = τ - ε, halfπ = π / 2, d3_radians = π / 180, d3_degrees = 180 / π;
   1262  function d3_sgn(x) {
   1263    return x > 0 ? 1 : x < 0 ? -1 : 0;
   1264  }
   1265  function d3_cross2d(a, b, c) {
   1266    return (b[0] - a[0]) * (c[1] - a[1]) - (b[1] - a[1]) * (c[0] - a[0]);
   1267  }
   1268  function d3_acos(x) {
   1269    return x > 1 ? 0 : x < -1 ? π : Math.acos(x);
   1270  }
   1271  function d3_asin(x) {
   1272    return x > 1 ? halfπ : x < -1 ? -halfπ : Math.asin(x);
   1273  }
   1274  function d3_sinh(x) {
   1275    return ((x = Math.exp(x)) - 1 / x) / 2;
   1276  }
   1277  function d3_cosh(x) {
   1278    return ((x = Math.exp(x)) + 1 / x) / 2;
   1279  }
   1280  function d3_tanh(x) {
   1281    return ((x = Math.exp(2 * x)) - 1) / (x + 1);
   1282  }
   1283  function d3_haversin(x) {
   1284    return (x = Math.sin(x / 2)) * x;
   1285  }
   1286  var ρ = Math.SQRT2, ρ2 = 2, ρ4 = 4;
   1287  d3.interpolateZoom = function(p0, p1) {
   1288    var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], ux1 = p1[0], uy1 = p1[1], w1 = p1[2], dx = ux1 - ux0, dy = uy1 - uy0, d2 = dx * dx + dy * dy, i, S;
   1289    if (d2 < ε2) {
   1290      S = Math.log(w1 / w0) / ρ;
   1291      i = function(t) {
   1292        return [ ux0 + t * dx, uy0 + t * dy, w0 * Math.exp(ρ * t * S) ];
   1293      };
   1294    } else {
   1295      var d1 = Math.sqrt(d2), b0 = (w1 * w1 - w0 * w0 + ρ4 * d2) / (2 * w0 * ρ2 * d1), b1 = (w1 * w1 - w0 * w0 - ρ4 * d2) / (2 * w1 * ρ2 * d1), r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1);
   1296      S = (r1 - r0) / ρ;
   1297      i = function(t) {
   1298        var s = t * S, coshr0 = d3_cosh(r0), u = w0 / (ρ2 * d1) * (coshr0 * d3_tanh(ρ * s + r0) - d3_sinh(r0));
   1299        return [ ux0 + u * dx, uy0 + u * dy, w0 * coshr0 / d3_cosh(ρ * s + r0) ];
   1300      };
   1301    }
   1302    i.duration = S * 1e3;
   1303    return i;
   1304  };
   1305  d3.behavior.zoom = function() {
   1306    var view = {
   1307      x: 0,
   1308      y: 0,
   1309      k: 1
   1310    }, translate0, center0, center, size = [ 960, 500 ], scaleExtent = d3_behavior_zoomInfinity, duration = 250, zooming = 0, mousedown = "mousedown.zoom", mousemove = "mousemove.zoom", mouseup = "mouseup.zoom", mousewheelTimer, touchstart = "touchstart.zoom", touchtime, event = d3_eventDispatch(zoom, "zoomstart", "zoom", "zoomend"), x0, x1, y0, y1;
   1311    if (!d3_behavior_zoomWheel) {
   1312      d3_behavior_zoomWheel = "onwheel" in d3_document ? (d3_behavior_zoomDelta = function() {
   1313        return -d3.event.deltaY * (d3.event.deltaMode ? 120 : 1);
   1314      }, "wheel") : "onmousewheel" in d3_document ? (d3_behavior_zoomDelta = function() {
   1315        return d3.event.wheelDelta;
   1316      }, "mousewheel") : (d3_behavior_zoomDelta = function() {
   1317        return -d3.event.detail;
   1318      }, "MozMousePixelScroll");
   1319    }
   1320    function zoom(g) {
   1321      g.on(mousedown, mousedowned).on(d3_behavior_zoomWheel + ".zoom", mousewheeled).on("dblclick.zoom", dblclicked).on(touchstart, touchstarted);
   1322    }
   1323    zoom.event = function(g) {
   1324      g.each(function() {
   1325        var dispatch = event.of(this, arguments), view1 = view;
   1326        if (d3_transitionInheritId) {
   1327          d3.select(this).transition().each("start.zoom", function() {
   1328            view = this.__chart__ || {
   1329              x: 0,
   1330              y: 0,
   1331              k: 1
   1332            };
   1333            zoomstarted(dispatch);
   1334          }).tween("zoom:zoom", function() {
   1335            var dx = size[0], dy = size[1], cx = center0 ? center0[0] : dx / 2, cy = center0 ? center0[1] : dy / 2, i = d3.interpolateZoom([ (cx - view.x) / view.k, (cy - view.y) / view.k, dx / view.k ], [ (cx - view1.x) / view1.k, (cy - view1.y) / view1.k, dx / view1.k ]);
   1336            return function(t) {
   1337              var l = i(t), k = dx / l[2];
   1338              this.__chart__ = view = {
   1339                x: cx - l[0] * k,
   1340                y: cy - l[1] * k,
   1341                k: k
   1342              };
   1343              zoomed(dispatch);
   1344            };
   1345          }).each("interrupt.zoom", function() {
   1346            zoomended(dispatch);
   1347          }).each("end.zoom", function() {
   1348            zoomended(dispatch);
   1349          });
   1350        } else {
   1351          this.__chart__ = view;
   1352          zoomstarted(dispatch);
   1353          zoomed(dispatch);
   1354          zoomended(dispatch);
   1355        }
   1356      });
   1357    };
   1358    zoom.translate = function(_) {
   1359      if (!arguments.length) return [ view.x, view.y ];
   1360      view = {
   1361        x: +_[0],
   1362        y: +_[1],
   1363        k: view.k
   1364      };
   1365      rescale();
   1366      return zoom;
   1367    };
   1368    zoom.scale = function(_) {
   1369      if (!arguments.length) return view.k;
   1370      view = {
   1371        x: view.x,
   1372        y: view.y,
   1373        k: null
   1374      };
   1375      scaleTo(+_);
   1376      rescale();
   1377      return zoom;
   1378    };
   1379    zoom.scaleExtent = function(_) {
   1380      if (!arguments.length) return scaleExtent;
   1381      scaleExtent = _ == null ? d3_behavior_zoomInfinity : [ +_[0], +_[1] ];
   1382      return zoom;
   1383    };
   1384    zoom.center = function(_) {
   1385      if (!arguments.length) return center;
   1386      center = _ && [ +_[0], +_[1] ];
   1387      return zoom;
   1388    };
   1389    zoom.size = function(_) {
   1390      if (!arguments.length) return size;
   1391      size = _ && [ +_[0], +_[1] ];
   1392      return zoom;
   1393    };
   1394    zoom.duration = function(_) {
   1395      if (!arguments.length) return duration;
   1396      duration = +_;
   1397      return zoom;
   1398    };
   1399    zoom.x = function(z) {
   1400      if (!arguments.length) return x1;
   1401      x1 = z;
   1402      x0 = z.copy();
   1403      view = {
   1404        x: 0,
   1405        y: 0,
   1406        k: 1
   1407      };
   1408      return zoom;
   1409    };
   1410    zoom.y = function(z) {
   1411      if (!arguments.length) return y1;
   1412      y1 = z;
   1413      y0 = z.copy();
   1414      view = {
   1415        x: 0,
   1416        y: 0,
   1417        k: 1
   1418      };
   1419      return zoom;
   1420    };
   1421    function location(p) {
   1422      return [ (p[0] - view.x) / view.k, (p[1] - view.y) / view.k ];
   1423    }
   1424    function point(l) {
   1425      return [ l[0] * view.k + view.x, l[1] * view.k + view.y ];
   1426    }
   1427    function scaleTo(s) {
   1428      view.k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], s));
   1429    }
   1430    function translateTo(p, l) {
   1431      l = point(l);
   1432      view.x += p[0] - l[0];
   1433      view.y += p[1] - l[1];
   1434    }
   1435    function zoomTo(that, p, l, k) {
   1436      that.__chart__ = {
   1437        x: view.x,
   1438        y: view.y,
   1439        k: view.k
   1440      };
   1441      scaleTo(Math.pow(2, k));
   1442      translateTo(center0 = p, l);
   1443      that = d3.select(that);
   1444      if (duration > 0) that = that.transition().duration(duration);
   1445      that.call(zoom.event);
   1446    }
   1447    function rescale() {
   1448      if (x1) x1.domain(x0.range().map(function(x) {
   1449        return (x - view.x) / view.k;
   1450      }).map(x0.invert));
   1451      if (y1) y1.domain(y0.range().map(function(y) {
   1452        return (y - view.y) / view.k;
   1453      }).map(y0.invert));
   1454    }
   1455    function zoomstarted(dispatch) {
   1456      if (!zooming++) dispatch({
   1457        type: "zoomstart"
   1458      });
   1459    }
   1460    function zoomed(dispatch) {
   1461      rescale();
   1462      dispatch({
   1463        type: "zoom",
   1464        scale: view.k,
   1465        translate: [ view.x, view.y ]
   1466      });
   1467    }
   1468    function zoomended(dispatch) {
   1469      if (!--zooming) dispatch({
   1470        type: "zoomend"
   1471      }), center0 = null;
   1472    }
   1473    function mousedowned() {
   1474      var that = this, dispatch = event.of(that, arguments), dragged = 0, subject = d3.select(d3_window(that)).on(mousemove, moved).on(mouseup, ended), location0 = location(d3.mouse(that)), dragRestore = d3_event_dragSuppress(that);
   1475      d3_selection_interrupt.call(that);
   1476      zoomstarted(dispatch);
   1477      function moved() {
   1478        dragged = 1;
   1479        translateTo(d3.mouse(that), location0);
   1480        zoomed(dispatch);
   1481      }
   1482      function ended() {
   1483        subject.on(mousemove, null).on(mouseup, null);
   1484        dragRestore(dragged);
   1485        zoomended(dispatch);
   1486      }
   1487    }
   1488    function touchstarted() {
   1489      var that = this, dispatch = event.of(that, arguments), locations0 = {}, distance0 = 0, scale0, zoomName = ".zoom-" + d3.event.changedTouches[0].identifier, touchmove = "touchmove" + zoomName, touchend = "touchend" + zoomName, targets = [], subject = d3.select(that), dragRestore = d3_event_dragSuppress(that);
   1490      started();
   1491      zoomstarted(dispatch);
   1492      subject.on(mousedown, null).on(touchstart, started);
   1493      function relocate() {
   1494        var touches = d3.touches(that);
   1495        scale0 = view.k;
   1496        touches.forEach(function(t) {
   1497          if (t.identifier in locations0) locations0[t.identifier] = location(t);
   1498        });
   1499        return touches;
   1500      }
   1501      function started() {
   1502        var target = d3.event.target;
   1503        d3.select(target).on(touchmove, moved).on(touchend, ended);
   1504        targets.push(target);
   1505        var changed = d3.event.changedTouches;
   1506        for (var i = 0, n = changed.length; i < n; ++i) {
   1507          locations0[changed[i].identifier] = null;
   1508        }
   1509        var touches = relocate(), now = Date.now();
   1510        if (touches.length === 1) {
   1511          if (now - touchtime < 500) {
   1512            var p = touches[0];
   1513            zoomTo(that, p, locations0[p.identifier], Math.floor(Math.log(view.k) / Math.LN2) + 1);
   1514            d3_eventPreventDefault();
   1515          }
   1516          touchtime = now;
   1517        } else if (touches.length > 1) {
   1518          var p = touches[0], q = touches[1], dx = p[0] - q[0], dy = p[1] - q[1];
   1519          distance0 = dx * dx + dy * dy;
   1520        }
   1521      }
   1522      function moved() {
   1523        var touches = d3.touches(that), p0, l0, p1, l1;
   1524        d3_selection_interrupt.call(that);
   1525        for (var i = 0, n = touches.length; i < n; ++i, l1 = null) {
   1526          p1 = touches[i];
   1527          if (l1 = locations0[p1.identifier]) {
   1528            if (l0) break;
   1529            p0 = p1, l0 = l1;
   1530          }
   1531        }
   1532        if (l1) {
   1533          var distance1 = (distance1 = p1[0] - p0[0]) * distance1 + (distance1 = p1[1] - p0[1]) * distance1, scale1 = distance0 && Math.sqrt(distance1 / distance0);
   1534          p0 = [ (p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2 ];
   1535          l0 = [ (l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2 ];
   1536          scaleTo(scale1 * scale0);
   1537        }
   1538        touchtime = null;
   1539        translateTo(p0, l0);
   1540        zoomed(dispatch);
   1541      }
   1542      function ended() {
   1543        if (d3.event.touches.length) {
   1544          var changed = d3.event.changedTouches;
   1545          for (var i = 0, n = changed.length; i < n; ++i) {
   1546            delete locations0[changed[i].identifier];
   1547          }
   1548          for (var identifier in locations0) {
   1549            return void relocate();
   1550          }
   1551        }
   1552        d3.selectAll(targets).on(zoomName, null);
   1553        subject.on(mousedown, mousedowned).on(touchstart, touchstarted);
   1554        dragRestore();
   1555        zoomended(dispatch);
   1556      }
   1557    }
   1558    function mousewheeled() {
   1559      var dispatch = event.of(this, arguments);
   1560      if (mousewheelTimer) clearTimeout(mousewheelTimer); else d3_selection_interrupt.call(this), 
   1561      translate0 = location(center0 = center || d3.mouse(this)), zoomstarted(dispatch);
   1562      mousewheelTimer = setTimeout(function() {
   1563        mousewheelTimer = null;
   1564        zoomended(dispatch);
   1565      }, 50);
   1566      d3_eventPreventDefault();
   1567      scaleTo(Math.pow(2, d3_behavior_zoomDelta() * .002) * view.k);
   1568      translateTo(center0, translate0);
   1569      zoomed(dispatch);
   1570    }
   1571    function dblclicked() {
   1572      var p = d3.mouse(this), k = Math.log(view.k) / Math.LN2;
   1573      zoomTo(this, p, location(p), d3.event.shiftKey ? Math.ceil(k) - 1 : Math.floor(k) + 1);
   1574    }
   1575    return d3.rebind(zoom, event, "on");
   1576  };
   1577  var d3_behavior_zoomInfinity = [ 0, Infinity ], d3_behavior_zoomDelta, d3_behavior_zoomWheel;
   1578  d3.color = d3_color;
   1579  function d3_color() {}
   1580  d3_color.prototype.toString = function() {
   1581    return this.rgb() + "";
   1582  };
   1583  d3.hsl = d3_hsl;
   1584  function d3_hsl(h, s, l) {
   1585    return this instanceof d3_hsl ? void (this.h = +h, this.s = +s, this.l = +l) : arguments.length < 2 ? h instanceof d3_hsl ? new d3_hsl(h.h, h.s, h.l) : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl) : new d3_hsl(h, s, l);
   1586  }
   1587  var d3_hslPrototype = d3_hsl.prototype = new d3_color();
   1588  d3_hslPrototype.brighter = function(k) {
   1589    k = Math.pow(.7, arguments.length ? k : 1);
   1590    return new d3_hsl(this.h, this.s, this.l / k);
   1591  };
   1592  d3_hslPrototype.darker = function(k) {
   1593    k = Math.pow(.7, arguments.length ? k : 1);
   1594    return new d3_hsl(this.h, this.s, k * this.l);
   1595  };
   1596  d3_hslPrototype.rgb = function() {
   1597    return d3_hsl_rgb(this.h, this.s, this.l);
   1598  };
   1599  function d3_hsl_rgb(h, s, l) {
   1600    var m1, m2;
   1601    h = isNaN(h) ? 0 : (h %= 360) < 0 ? h + 360 : h;
   1602    s = isNaN(s) ? 0 : s < 0 ? 0 : s > 1 ? 1 : s;
   1603    l = l < 0 ? 0 : l > 1 ? 1 : l;
   1604    m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
   1605    m1 = 2 * l - m2;
   1606    function v(h) {
   1607      if (h > 360) h -= 360; else if (h < 0) h += 360;
   1608      if (h < 60) return m1 + (m2 - m1) * h / 60;
   1609      if (h < 180) return m2;
   1610      if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
   1611      return m1;
   1612    }
   1613    function vv(h) {
   1614      return Math.round(v(h) * 255);
   1615    }
   1616    return new d3_rgb(vv(h + 120), vv(h), vv(h - 120));
   1617  }
   1618  d3.hcl = d3_hcl;
   1619  function d3_hcl(h, c, l) {
   1620    return this instanceof d3_hcl ? void (this.h = +h, this.c = +c, this.l = +l) : arguments.length < 2 ? h instanceof d3_hcl ? new d3_hcl(h.h, h.c, h.l) : h instanceof d3_lab ? d3_lab_hcl(h.l, h.a, h.b) : d3_lab_hcl((h = d3_rgb_lab((h = d3.rgb(h)).r, h.g, h.b)).l, h.a, h.b) : new d3_hcl(h, c, l);
   1621  }
   1622  var d3_hclPrototype = d3_hcl.prototype = new d3_color();
   1623  d3_hclPrototype.brighter = function(k) {
   1624    return new d3_hcl(this.h, this.c, Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)));
   1625  };
   1626  d3_hclPrototype.darker = function(k) {
   1627    return new d3_hcl(this.h, this.c, Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)));
   1628  };
   1629  d3_hclPrototype.rgb = function() {
   1630    return d3_hcl_lab(this.h, this.c, this.l).rgb();
   1631  };
   1632  function d3_hcl_lab(h, c, l) {
   1633    if (isNaN(h)) h = 0;
   1634    if (isNaN(c)) c = 0;
   1635    return new d3_lab(l, Math.cos(h *= d3_radians) * c, Math.sin(h) * c);
   1636  }
   1637  d3.lab = d3_lab;
   1638  function d3_lab(l, a, b) {
   1639    return this instanceof d3_lab ? void (this.l = +l, this.a = +a, this.b = +b) : arguments.length < 2 ? l instanceof d3_lab ? new d3_lab(l.l, l.a, l.b) : l instanceof d3_hcl ? d3_hcl_lab(l.h, l.c, l.l) : d3_rgb_lab((l = d3_rgb(l)).r, l.g, l.b) : new d3_lab(l, a, b);
   1640  }
   1641  var d3_lab_K = 18;
   1642  var d3_lab_X = .95047, d3_lab_Y = 1, d3_lab_Z = 1.08883;
   1643  var d3_labPrototype = d3_lab.prototype = new d3_color();
   1644  d3_labPrototype.brighter = function(k) {
   1645    return new d3_lab(Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
   1646  };
   1647  d3_labPrototype.darker = function(k) {
   1648    return new d3_lab(Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
   1649  };
   1650  d3_labPrototype.rgb = function() {
   1651    return d3_lab_rgb(this.l, this.a, this.b);
   1652  };
   1653  function d3_lab_rgb(l, a, b) {
   1654    var y = (l + 16) / 116, x = y + a / 500, z = y - b / 200;
   1655    x = d3_lab_xyz(x) * d3_lab_X;
   1656    y = d3_lab_xyz(y) * d3_lab_Y;
   1657    z = d3_lab_xyz(z) * d3_lab_Z;
   1658    return new d3_rgb(d3_xyz_rgb(3.2404542 * x - 1.5371385 * y - .4985314 * z), d3_xyz_rgb(-.969266 * x + 1.8760108 * y + .041556 * z), d3_xyz_rgb(.0556434 * x - .2040259 * y + 1.0572252 * z));
   1659  }
   1660  function d3_lab_hcl(l, a, b) {
   1661    return l > 0 ? new d3_hcl(Math.atan2(b, a) * d3_degrees, Math.sqrt(a * a + b * b), l) : new d3_hcl(NaN, NaN, l);
   1662  }
   1663  function d3_lab_xyz(x) {
   1664    return x > .206893034 ? x * x * x : (x - 4 / 29) / 7.787037;
   1665  }
   1666  function d3_xyz_lab(x) {
   1667    return x > .008856 ? Math.pow(x, 1 / 3) : 7.787037 * x + 4 / 29;
   1668  }
   1669  function d3_xyz_rgb(r) {
   1670    return Math.round(255 * (r <= .00304 ? 12.92 * r : 1.055 * Math.pow(r, 1 / 2.4) - .055));
   1671  }
   1672  d3.rgb = d3_rgb;
   1673  function d3_rgb(r, g, b) {
   1674    return this instanceof d3_rgb ? void (this.r = ~~r, this.g = ~~g, this.b = ~~b) : arguments.length < 2 ? r instanceof d3_rgb ? new d3_rgb(r.r, r.g, r.b) : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb) : new d3_rgb(r, g, b);
   1675  }
   1676  function d3_rgbNumber(value) {
   1677    return new d3_rgb(value >> 16, value >> 8 & 255, value & 255);
   1678  }
   1679  function d3_rgbString(value) {
   1680    return d3_rgbNumber(value) + "";
   1681  }
   1682  var d3_rgbPrototype = d3_rgb.prototype = new d3_color();
   1683  d3_rgbPrototype.brighter = function(k) {
   1684    k = Math.pow(.7, arguments.length ? k : 1);
   1685    var r = this.r, g = this.g, b = this.b, i = 30;
   1686    if (!r && !g && !b) return new d3_rgb(i, i, i);
   1687    if (r && r < i) r = i;
   1688    if (g && g < i) g = i;
   1689    if (b && b < i) b = i;
   1690    return new d3_rgb(Math.min(255, r / k), Math.min(255, g / k), Math.min(255, b / k));
   1691  };
   1692  d3_rgbPrototype.darker = function(k) {
   1693    k = Math.pow(.7, arguments.length ? k : 1);
   1694    return new d3_rgb(k * this.r, k * this.g, k * this.b);
   1695  };
   1696  d3_rgbPrototype.hsl = function() {
   1697    return d3_rgb_hsl(this.r, this.g, this.b);
   1698  };
   1699  d3_rgbPrototype.toString = function() {
   1700    return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
   1701  };
   1702  function d3_rgb_hex(v) {
   1703    return v < 16 ? "0" + Math.max(0, v).toString(16) : Math.min(255, v).toString(16);
   1704  }
   1705  function d3_rgb_parse(format, rgb, hsl) {
   1706    var r = 0, g = 0, b = 0, m1, m2, color;
   1707    m1 = /([a-z]+)\((.*)\)/.exec(format = format.toLowerCase());
   1708    if (m1) {
   1709      m2 = m1[2].split(",");
   1710      switch (m1[1]) {
   1711       case "hsl":
   1712        {
   1713          return hsl(parseFloat(m2[0]), parseFloat(m2[1]) / 100, parseFloat(m2[2]) / 100);
   1714        }
   1715 
   1716       case "rgb":
   1717        {
   1718          return rgb(d3_rgb_parseNumber(m2[0]), d3_rgb_parseNumber(m2[1]), d3_rgb_parseNumber(m2[2]));
   1719        }
   1720      }
   1721    }
   1722    if (color = d3_rgb_names.get(format)) {
   1723      return rgb(color.r, color.g, color.b);
   1724    }
   1725    if (format != null && format.charAt(0) === "#" && !isNaN(color = parseInt(format.slice(1), 16))) {
   1726      if (format.length === 4) {
   1727        r = (color & 3840) >> 4;
   1728        r = r >> 4 | r;
   1729        g = color & 240;
   1730        g = g >> 4 | g;
   1731        b = color & 15;
   1732        b = b << 4 | b;
   1733      } else if (format.length === 7) {
   1734        r = (color & 16711680) >> 16;
   1735        g = (color & 65280) >> 8;
   1736        b = color & 255;
   1737      }
   1738    }
   1739    return rgb(r, g, b);
   1740  }
   1741  function d3_rgb_hsl(r, g, b) {
   1742    var min = Math.min(r /= 255, g /= 255, b /= 255), max = Math.max(r, g, b), d = max - min, h, s, l = (max + min) / 2;
   1743    if (d) {
   1744      s = l < .5 ? d / (max + min) : d / (2 - max - min);
   1745      if (r == max) h = (g - b) / d + (g < b ? 6 : 0); else if (g == max) h = (b - r) / d + 2; else h = (r - g) / d + 4;
   1746      h *= 60;
   1747    } else {
   1748      h = NaN;
   1749      s = l > 0 && l < 1 ? 0 : h;
   1750    }
   1751    return new d3_hsl(h, s, l);
   1752  }
   1753  function d3_rgb_lab(r, g, b) {
   1754    r = d3_rgb_xyz(r);
   1755    g = d3_rgb_xyz(g);
   1756    b = d3_rgb_xyz(b);
   1757    var x = d3_xyz_lab((.4124564 * r + .3575761 * g + .1804375 * b) / d3_lab_X), y = d3_xyz_lab((.2126729 * r + .7151522 * g + .072175 * b) / d3_lab_Y), z = d3_xyz_lab((.0193339 * r + .119192 * g + .9503041 * b) / d3_lab_Z);
   1758    return d3_lab(116 * y - 16, 500 * (x - y), 200 * (y - z));
   1759  }
   1760  function d3_rgb_xyz(r) {
   1761    return (r /= 255) <= .04045 ? r / 12.92 : Math.pow((r + .055) / 1.055, 2.4);
   1762  }
   1763  function d3_rgb_parseNumber(c) {
   1764    var f = parseFloat(c);
   1765    return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
   1766  }
   1767  var d3_rgb_names = d3.map({
   1768    aliceblue: 15792383,
   1769    antiquewhite: 16444375,
   1770    aqua: 65535,
   1771    aquamarine: 8388564,
   1772    azure: 15794175,
   1773    beige: 16119260,
   1774    bisque: 16770244,
   1775    black: 0,
   1776    blanchedalmond: 16772045,
   1777    blue: 255,
   1778    blueviolet: 9055202,
   1779    brown: 10824234,
   1780    burlywood: 14596231,
   1781    cadetblue: 6266528,
   1782    chartreuse: 8388352,
   1783    chocolate: 13789470,
   1784    coral: 16744272,
   1785    cornflowerblue: 6591981,
   1786    cornsilk: 16775388,
   1787    crimson: 14423100,
   1788    cyan: 65535,
   1789    darkblue: 139,
   1790    darkcyan: 35723,
   1791    darkgoldenrod: 12092939,
   1792    darkgray: 11119017,
   1793    darkgreen: 25600,
   1794    darkgrey: 11119017,
   1795    darkkhaki: 12433259,
   1796    darkmagenta: 9109643,
   1797    darkolivegreen: 5597999,
   1798    darkorange: 16747520,
   1799    darkorchid: 10040012,
   1800    darkred: 9109504,
   1801    darksalmon: 15308410,
   1802    darkseagreen: 9419919,
   1803    darkslateblue: 4734347,
   1804    darkslategray: 3100495,
   1805    darkslategrey: 3100495,
   1806    darkturquoise: 52945,
   1807    darkviolet: 9699539,
   1808    deeppink: 16716947,
   1809    deepskyblue: 49151,
   1810    dimgray: 6908265,
   1811    dimgrey: 6908265,
   1812    dodgerblue: 2003199,
   1813    firebrick: 11674146,
   1814    floralwhite: 16775920,
   1815    forestgreen: 2263842,
   1816    fuchsia: 16711935,
   1817    gainsboro: 14474460,
   1818    ghostwhite: 16316671,
   1819    gold: 16766720,
   1820    goldenrod: 14329120,
   1821    gray: 8421504,
   1822    green: 32768,
   1823    greenyellow: 11403055,
   1824    grey: 8421504,
   1825    honeydew: 15794160,
   1826    hotpink: 16738740,
   1827    indianred: 13458524,
   1828    indigo: 4915330,
   1829    ivory: 16777200,
   1830    khaki: 15787660,
   1831    lavender: 15132410,
   1832    lavenderblush: 16773365,
   1833    lawngreen: 8190976,
   1834    lemonchiffon: 16775885,
   1835    lightblue: 11393254,
   1836    lightcoral: 15761536,
   1837    lightcyan: 14745599,
   1838    lightgoldenrodyellow: 16448210,
   1839    lightgray: 13882323,
   1840    lightgreen: 9498256,
   1841    lightgrey: 13882323,
   1842    lightpink: 16758465,
   1843    lightsalmon: 16752762,
   1844    lightseagreen: 2142890,
   1845    lightskyblue: 8900346,
   1846    lightslategray: 7833753,
   1847    lightslategrey: 7833753,
   1848    lightsteelblue: 11584734,
   1849    lightyellow: 16777184,
   1850    lime: 65280,
   1851    limegreen: 3329330,
   1852    linen: 16445670,
   1853    magenta: 16711935,
   1854    maroon: 8388608,
   1855    mediumaquamarine: 6737322,
   1856    mediumblue: 205,
   1857    mediumorchid: 12211667,
   1858    mediumpurple: 9662683,
   1859    mediumseagreen: 3978097,
   1860    mediumslateblue: 8087790,
   1861    mediumspringgreen: 64154,
   1862    mediumturquoise: 4772300,
   1863    mediumvioletred: 13047173,
   1864    midnightblue: 1644912,
   1865    mintcream: 16121850,
   1866    mistyrose: 16770273,
   1867    moccasin: 16770229,
   1868    navajowhite: 16768685,
   1869    navy: 128,
   1870    oldlace: 16643558,
   1871    olive: 8421376,
   1872    olivedrab: 7048739,
   1873    orange: 16753920,
   1874    orangered: 16729344,
   1875    orchid: 14315734,
   1876    palegoldenrod: 15657130,
   1877    palegreen: 10025880,
   1878    paleturquoise: 11529966,
   1879    palevioletred: 14381203,
   1880    papayawhip: 16773077,
   1881    peachpuff: 16767673,
   1882    peru: 13468991,
   1883    pink: 16761035,
   1884    plum: 14524637,
   1885    powderblue: 11591910,
   1886    purple: 8388736,
   1887    rebeccapurple: 6697881,
   1888    red: 16711680,
   1889    rosybrown: 12357519,
   1890    royalblue: 4286945,
   1891    saddlebrown: 9127187,
   1892    salmon: 16416882,
   1893    sandybrown: 16032864,
   1894    seagreen: 3050327,
   1895    seashell: 16774638,
   1896    sienna: 10506797,
   1897    silver: 12632256,
   1898    skyblue: 8900331,
   1899    slateblue: 6970061,
   1900    slategray: 7372944,
   1901    slategrey: 7372944,
   1902    snow: 16775930,
   1903    springgreen: 65407,
   1904    steelblue: 4620980,
   1905    tan: 13808780,
   1906    teal: 32896,
   1907    thistle: 14204888,
   1908    tomato: 16737095,
   1909    turquoise: 4251856,
   1910    violet: 15631086,
   1911    wheat: 16113331,
   1912    white: 16777215,
   1913    whitesmoke: 16119285,
   1914    yellow: 16776960,
   1915    yellowgreen: 10145074
   1916  });
   1917  d3_rgb_names.forEach(function(key, value) {
   1918    d3_rgb_names.set(key, d3_rgbNumber(value));
   1919  });
   1920  function d3_functor(v) {
   1921    return typeof v === "function" ? v : function() {
   1922      return v;
   1923    };
   1924  }
   1925  d3.functor = d3_functor;
   1926  d3.xhr = d3_xhrType(d3_identity);
   1927  function d3_xhrType(response) {
   1928    return function(url, mimeType, callback) {
   1929      if (arguments.length === 2 && typeof mimeType === "function") callback = mimeType, 
   1930      mimeType = null;
   1931      return d3_xhr(url, mimeType, response, callback);
   1932    };
   1933  }
   1934  function d3_xhr(url, mimeType, response, callback) {
   1935    var xhr = {}, dispatch = d3.dispatch("beforesend", "progress", "load", "error"), headers = {}, request = new XMLHttpRequest(), responseType = null;
   1936    if (this.XDomainRequest && !("withCredentials" in request) && /^(http(s)?:)?\/\//.test(url)) request = new XDomainRequest();
   1937    "onload" in request ? request.onload = request.onerror = respond : request.onreadystatechange = function() {
   1938      request.readyState > 3 && respond();
   1939    };
   1940    function respond() {
   1941      var status = request.status, result;
   1942      if (!status && d3_xhrHasResponse(request) || status >= 200 && status < 300 || status === 304) {
   1943        try {
   1944          result = response.call(xhr, request);
   1945        } catch (e) {
   1946          dispatch.error.call(xhr, e);
   1947          return;
   1948        }
   1949        dispatch.load.call(xhr, result);
   1950      } else {
   1951        dispatch.error.call(xhr, request);
   1952      }
   1953    }
   1954    request.onprogress = function(event) {
   1955      var o = d3.event;
   1956      d3.event = event;
   1957      try {
   1958        dispatch.progress.call(xhr, request);
   1959      } finally {
   1960        d3.event = o;
   1961      }
   1962    };
   1963    xhr.header = function(name, value) {
   1964      name = (name + "").toLowerCase();
   1965      if (arguments.length < 2) return headers[name];
   1966      if (value == null) delete headers[name]; else headers[name] = value + "";
   1967      return xhr;
   1968    };
   1969    xhr.mimeType = function(value) {
   1970      if (!arguments.length) return mimeType;
   1971      mimeType = value == null ? null : value + "";
   1972      return xhr;
   1973    };
   1974    xhr.responseType = function(value) {
   1975      if (!arguments.length) return responseType;
   1976      responseType = value;
   1977      return xhr;
   1978    };
   1979    xhr.response = function(value) {
   1980      response = value;
   1981      return xhr;
   1982    };
   1983    [ "get", "post" ].forEach(function(method) {
   1984      xhr[method] = function() {
   1985        return xhr.send.apply(xhr, [ method ].concat(d3_array(arguments)));
   1986      };
   1987    });
   1988    xhr.send = function(method, data, callback) {
   1989      if (arguments.length === 2 && typeof data === "function") callback = data, data = null;
   1990      request.open(method, url, true);
   1991      if (mimeType != null && !("accept" in headers)) headers["accept"] = mimeType + ",*/*";
   1992      if (request.setRequestHeader) for (var name in headers) request.setRequestHeader(name, headers[name]);
   1993      if (mimeType != null && request.overrideMimeType) request.overrideMimeType(mimeType);
   1994      if (responseType != null) request.responseType = responseType;
   1995      if (callback != null) xhr.on("error", callback).on("load", function(request) {
   1996        callback(null, request);
   1997      });
   1998      dispatch.beforesend.call(xhr, request);
   1999      request.send(data == null ? null : data);
   2000      return xhr;
   2001    };
   2002    xhr.abort = function() {
   2003      request.abort();
   2004      return xhr;
   2005    };
   2006    d3.rebind(xhr, dispatch, "on");
   2007    return callback == null ? xhr : xhr.get(d3_xhr_fixCallback(callback));
   2008  }
   2009  function d3_xhr_fixCallback(callback) {
   2010    return callback.length === 1 ? function(error, request) {
   2011      callback(error == null ? request : null);
   2012    } : callback;
   2013  }
   2014  function d3_xhrHasResponse(request) {
   2015    var type = request.responseType;
   2016    return type && type !== "text" ? request.response : request.responseText;
   2017  }
   2018  d3.dsv = function(delimiter, mimeType) {
   2019    var reFormat = new RegExp('["' + delimiter + "\n]"), delimiterCode = delimiter.charCodeAt(0);
   2020    function dsv(url, row, callback) {
   2021      if (arguments.length < 3) callback = row, row = null;
   2022      var xhr = d3_xhr(url, mimeType, row == null ? response : typedResponse(row), callback);
   2023      xhr.row = function(_) {
   2024        return arguments.length ? xhr.response((row = _) == null ? response : typedResponse(_)) : row;
   2025      };
   2026      return xhr;
   2027    }
   2028    function response(request) {
   2029      return dsv.parse(request.responseText);
   2030    }
   2031    function typedResponse(f) {
   2032      return function(request) {
   2033        return dsv.parse(request.responseText, f);
   2034      };
   2035    }
   2036    dsv.parse = function(text, f) {
   2037      var o;
   2038      return dsv.parseRows(text, function(row, i) {
   2039        if (o) return o(row, i - 1);
   2040        var a = new Function("d", "return {" + row.map(function(name, i) {
   2041          return JSON.stringify(name) + ": d[" + i + "]";
   2042        }).join(",") + "}");
   2043        o = f ? function(row, i) {
   2044          return f(a(row), i);
   2045        } : a;
   2046      });
   2047    };
   2048    dsv.parseRows = function(text, f) {
   2049      var EOL = {}, EOF = {}, rows = [], N = text.length, I = 0, n = 0, t, eol;
   2050      function token() {
   2051        if (I >= N) return EOF;
   2052        if (eol) return eol = false, EOL;
   2053        var j = I;
   2054        if (text.charCodeAt(j) === 34) {
   2055          var i = j;
   2056          while (i++ < N) {
   2057            if (text.charCodeAt(i) === 34) {
   2058              if (text.charCodeAt(i + 1) !== 34) break;
   2059              ++i;
   2060            }
   2061          }
   2062          I = i + 2;
   2063          var c = text.charCodeAt(i + 1);
   2064          if (c === 13) {
   2065            eol = true;
   2066            if (text.charCodeAt(i + 2) === 10) ++I;
   2067          } else if (c === 10) {
   2068            eol = true;
   2069          }
   2070          return text.slice(j + 1, i).replace(/""/g, '"');
   2071        }
   2072        while (I < N) {
   2073          var c = text.charCodeAt(I++), k = 1;
   2074          if (c === 10) eol = true; else if (c === 13) {
   2075            eol = true;
   2076            if (text.charCodeAt(I) === 10) ++I, ++k;
   2077          } else if (c !== delimiterCode) continue;
   2078          return text.slice(j, I - k);
   2079        }
   2080        return text.slice(j);
   2081      }
   2082      while ((t = token()) !== EOF) {
   2083        var a = [];
   2084        while (t !== EOL && t !== EOF) {
   2085          a.push(t);
   2086          t = token();
   2087        }
   2088        if (f && (a = f(a, n++)) == null) continue;
   2089        rows.push(a);
   2090      }
   2091      return rows;
   2092    };
   2093    dsv.format = function(rows) {
   2094      if (Array.isArray(rows[0])) return dsv.formatRows(rows);
   2095      var fieldSet = new d3_Set(), fields = [];
   2096      rows.forEach(function(row) {
   2097        for (var field in row) {
   2098          if (!fieldSet.has(field)) {
   2099            fields.push(fieldSet.add(field));
   2100          }
   2101        }
   2102      });
   2103      return [ fields.map(formatValue).join(delimiter) ].concat(rows.map(function(row) {
   2104        return fields.map(function(field) {
   2105          return formatValue(row[field]);
   2106        }).join(delimiter);
   2107      })).join("\n");
   2108    };
   2109    dsv.formatRows = function(rows) {
   2110      return rows.map(formatRow).join("\n");
   2111    };
   2112    function formatRow(row) {
   2113      return row.map(formatValue).join(delimiter);
   2114    }
   2115    function formatValue(text) {
   2116      return reFormat.test(text) ? '"' + text.replace(/\"/g, '""') + '"' : text;
   2117    }
   2118    return dsv;
   2119  };
   2120  d3.csv = d3.dsv(",", "text/csv");
   2121  d3.tsv = d3.dsv("	", "text/tab-separated-values");
   2122  var d3_timer_queueHead, d3_timer_queueTail, d3_timer_interval, d3_timer_timeout, d3_timer_frame = this[d3_vendorSymbol(this, "requestAnimationFrame")] || function(callback) {
   2123    setTimeout(callback, 17);
   2124  };
   2125  d3.timer = function() {
   2126    d3_timer.apply(this, arguments);
   2127  };
   2128  function d3_timer(callback, delay, then) {
   2129    var n = arguments.length;
   2130    if (n < 2) delay = 0;
   2131    if (n < 3) then = Date.now();
   2132    var time = then + delay, timer = {
   2133      c: callback,
   2134      t: time,
   2135      n: null
   2136    };
   2137    if (d3_timer_queueTail) d3_timer_queueTail.n = timer; else d3_timer_queueHead = timer;
   2138    d3_timer_queueTail = timer;
   2139    if (!d3_timer_interval) {
   2140      d3_timer_timeout = clearTimeout(d3_timer_timeout);
   2141      d3_timer_interval = 1;
   2142      d3_timer_frame(d3_timer_step);
   2143    }
   2144    return timer;
   2145  }
   2146  function d3_timer_step() {
   2147    var now = d3_timer_mark(), delay = d3_timer_sweep() - now;
   2148    if (delay > 24) {
   2149      if (isFinite(delay)) {
   2150        clearTimeout(d3_timer_timeout);
   2151        d3_timer_timeout = setTimeout(d3_timer_step, delay);
   2152      }
   2153      d3_timer_interval = 0;
   2154    } else {
   2155      d3_timer_interval = 1;
   2156      d3_timer_frame(d3_timer_step);
   2157    }
   2158  }
   2159  d3.timer.flush = function() {
   2160    d3_timer_mark();
   2161    d3_timer_sweep();
   2162  };
   2163  function d3_timer_mark() {
   2164    var now = Date.now(), timer = d3_timer_queueHead;
   2165    while (timer) {
   2166      if (now >= timer.t && timer.c(now - timer.t)) timer.c = null;
   2167      timer = timer.n;
   2168    }
   2169    return now;
   2170  }
   2171  function d3_timer_sweep() {
   2172    var t0, t1 = d3_timer_queueHead, time = Infinity;
   2173    while (t1) {
   2174      if (t1.c) {
   2175        if (t1.t < time) time = t1.t;
   2176        t1 = (t0 = t1).n;
   2177      } else {
   2178        t1 = t0 ? t0.n = t1.n : d3_timer_queueHead = t1.n;
   2179      }
   2180    }
   2181    d3_timer_queueTail = t0;
   2182    return time;
   2183  }
   2184  function d3_format_precision(x, p) {
   2185    return p - (x ? Math.ceil(Math.log(x) / Math.LN10) : 1);
   2186  }
   2187  d3.round = function(x, n) {
   2188    return n ? Math.round(x * (n = Math.pow(10, n))) / n : Math.round(x);
   2189  };
   2190  var d3_formatPrefixes = [ "y", "z", "a", "f", "p", "n", "µ", "m", "", "k", "M", "G", "T", "P", "E", "Z", "Y" ].map(d3_formatPrefix);
   2191  d3.formatPrefix = function(value, precision) {
   2192    var i = 0;
   2193    if (value = +value) {
   2194      if (value < 0) value *= -1;
   2195      if (precision) value = d3.round(value, d3_format_precision(value, precision));
   2196      i = 1 + Math.floor(1e-12 + Math.log(value) / Math.LN10);
   2197      i = Math.max(-24, Math.min(24, Math.floor((i - 1) / 3) * 3));
   2198    }
   2199    return d3_formatPrefixes[8 + i / 3];
   2200  };
   2201  function d3_formatPrefix(d, i) {
   2202    var k = Math.pow(10, abs(8 - i) * 3);
   2203    return {
   2204      scale: i > 8 ? function(d) {
   2205        return d / k;
   2206      } : function(d) {
   2207        return d * k;
   2208      },
   2209      symbol: d
   2210    };
   2211  }
   2212  function d3_locale_numberFormat(locale) {
   2213    var locale_decimal = locale.decimal, locale_thousands = locale.thousands, locale_grouping = locale.grouping, locale_currency = locale.currency, formatGroup = locale_grouping && locale_thousands ? function(value, width) {
   2214      var i = value.length, t = [], j = 0, g = locale_grouping[0], length = 0;
   2215      while (i > 0 && g > 0) {
   2216        if (length + g + 1 > width) g = Math.max(1, width - length);
   2217        t.push(value.substring(i -= g, i + g));
   2218        if ((length += g + 1) > width) break;
   2219        g = locale_grouping[j = (j + 1) % locale_grouping.length];
   2220      }
   2221      return t.reverse().join(locale_thousands);
   2222    } : d3_identity;
   2223    return function(specifier) {
   2224      var match = d3_format_re.exec(specifier), fill = match[1] || " ", align = match[2] || ">", sign = match[3] || "-", symbol = match[4] || "", zfill = match[5], width = +match[6], comma = match[7], precision = match[8], type = match[9], scale = 1, prefix = "", suffix = "", integer = false, exponent = true;
   2225      if (precision) precision = +precision.substring(1);
   2226      if (zfill || fill === "0" && align === "=") {
   2227        zfill = fill = "0";
   2228        align = "=";
   2229      }
   2230      switch (type) {
   2231       case "n":
   2232        comma = true;
   2233        type = "g";
   2234        break;
   2235 
   2236       case "%":
   2237        scale = 100;
   2238        suffix = "%";
   2239        type = "f";
   2240        break;
   2241 
   2242       case "p":
   2243        scale = 100;
   2244        suffix = "%";
   2245        type = "r";
   2246        break;
   2247 
   2248       case "b":
   2249       case "o":
   2250       case "x":
   2251       case "X":
   2252        if (symbol === "#") prefix = "0" + type.toLowerCase();
   2253 
   2254       case "c":
   2255        exponent = false;
   2256 
   2257       case "d":
   2258        integer = true;
   2259        precision = 0;
   2260        break;
   2261 
   2262       case "s":
   2263        scale = -1;
   2264        type = "r";
   2265        break;
   2266      }
   2267      if (symbol === "$") prefix = locale_currency[0], suffix = locale_currency[1];
   2268      if (type == "r" && !precision) type = "g";
   2269      if (precision != null) {
   2270        if (type == "g") precision = Math.max(1, Math.min(21, precision)); else if (type == "e" || type == "f") precision = Math.max(0, Math.min(20, precision));
   2271      }
   2272      type = d3_format_types.get(type) || d3_format_typeDefault;
   2273      var zcomma = zfill && comma;
   2274      return function(value) {
   2275        var fullSuffix = suffix;
   2276        if (integer && value % 1) return "";
   2277        var negative = value < 0 || value === 0 && 1 / value < 0 ? (value = -value, "-") : sign === "-" ? "" : sign;
   2278        if (scale < 0) {
   2279          var unit = d3.formatPrefix(value, precision);
   2280          value = unit.scale(value);
   2281          fullSuffix = unit.symbol + suffix;
   2282        } else {
   2283          value *= scale;
   2284        }
   2285        value = type(value, precision);
   2286        var i = value.lastIndexOf("."), before, after;
   2287        if (i < 0) {
   2288          var j = exponent ? value.lastIndexOf("e") : -1;
   2289          if (j < 0) before = value, after = ""; else before = value.substring(0, j), after = value.substring(j);
   2290        } else {
   2291          before = value.substring(0, i);
   2292          after = locale_decimal + value.substring(i + 1);
   2293        }
   2294        if (!zfill && comma) before = formatGroup(before, Infinity);
   2295        var length = prefix.length + before.length + after.length + (zcomma ? 0 : negative.length), padding = length < width ? new Array(length = width - length + 1).join(fill) : "";
   2296        if (zcomma) before = formatGroup(padding + before, padding.length ? width - after.length : Infinity);
   2297        negative += prefix;
   2298        value = before + after;
   2299        return (align === "<" ? negative + value + padding : align === ">" ? padding + negative + value : align === "^" ? padding.substring(0, length >>= 1) + negative + value + padding.substring(length) : negative + (zcomma ? value : padding + value)) + fullSuffix;
   2300      };
   2301    };
   2302  }
   2303  var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?([$#])?(0)?(\d+)?(,)?(\.-?\d+)?([a-z%])?/i;
   2304  var d3_format_types = d3.map({
   2305    b: function(x) {
   2306      return x.toString(2);
   2307    },
   2308    c: function(x) {
   2309      return String.fromCharCode(x);
   2310    },
   2311    o: function(x) {
   2312      return x.toString(8);
   2313    },
   2314    x: function(x) {
   2315      return x.toString(16);
   2316    },
   2317    X: function(x) {
   2318      return x.toString(16).toUpperCase();
   2319    },
   2320    g: function(x, p) {
   2321      return x.toPrecision(p);
   2322    },
   2323    e: function(x, p) {
   2324      return x.toExponential(p);
   2325    },
   2326    f: function(x, p) {
   2327      return x.toFixed(p);
   2328    },
   2329    r: function(x, p) {
   2330      return (x = d3.round(x, d3_format_precision(x, p))).toFixed(Math.max(0, Math.min(20, d3_format_precision(x * (1 + 1e-15), p))));
   2331    }
   2332  });
   2333  function d3_format_typeDefault(x) {
   2334    return x + "";
   2335  }
   2336  var d3_time = d3.time = {}, d3_date = Date;
   2337  function d3_date_utc() {
   2338    this._ = new Date(arguments.length > 1 ? Date.UTC.apply(this, arguments) : arguments[0]);
   2339  }
   2340  d3_date_utc.prototype = {
   2341    getDate: function() {
   2342      return this._.getUTCDate();
   2343    },
   2344    getDay: function() {
   2345      return this._.getUTCDay();
   2346    },
   2347    getFullYear: function() {
   2348      return this._.getUTCFullYear();
   2349    },
   2350    getHours: function() {
   2351      return this._.getUTCHours();
   2352    },
   2353    getMilliseconds: function() {
   2354      return this._.getUTCMilliseconds();
   2355    },
   2356    getMinutes: function() {
   2357      return this._.getUTCMinutes();
   2358    },
   2359    getMonth: function() {
   2360      return this._.getUTCMonth();
   2361    },
   2362    getSeconds: function() {
   2363      return this._.getUTCSeconds();
   2364    },
   2365    getTime: function() {
   2366      return this._.getTime();
   2367    },
   2368    getTimezoneOffset: function() {
   2369      return 0;
   2370    },
   2371    valueOf: function() {
   2372      return this._.valueOf();
   2373    },
   2374    setDate: function() {
   2375      d3_time_prototype.setUTCDate.apply(this._, arguments);
   2376    },
   2377    setDay: function() {
   2378      d3_time_prototype.setUTCDay.apply(this._, arguments);
   2379    },
   2380    setFullYear: function() {
   2381      d3_time_prototype.setUTCFullYear.apply(this._, arguments);
   2382    },
   2383    setHours: function() {
   2384      d3_time_prototype.setUTCHours.apply(this._, arguments);
   2385    },
   2386    setMilliseconds: function() {
   2387      d3_time_prototype.setUTCMilliseconds.apply(this._, arguments);
   2388    },
   2389    setMinutes: function() {
   2390      d3_time_prototype.setUTCMinutes.apply(this._, arguments);
   2391    },
   2392    setMonth: function() {
   2393      d3_time_prototype.setUTCMonth.apply(this._, arguments);
   2394    },
   2395    setSeconds: function() {
   2396      d3_time_prototype.setUTCSeconds.apply(this._, arguments);
   2397    },
   2398    setTime: function() {
   2399      d3_time_prototype.setTime.apply(this._, arguments);
   2400    }
   2401  };
   2402  var d3_time_prototype = Date.prototype;
   2403  function d3_time_interval(local, step, number) {
   2404    function round(date) {
   2405      var d0 = local(date), d1 = offset(d0, 1);
   2406      return date - d0 < d1 - date ? d0 : d1;
   2407    }
   2408    function ceil(date) {
   2409      step(date = local(new d3_date(date - 1)), 1);
   2410      return date;
   2411    }
   2412    function offset(date, k) {
   2413      step(date = new d3_date(+date), k);
   2414      return date;
   2415    }
   2416    function range(t0, t1, dt) {
   2417      var time = ceil(t0), times = [];
   2418      if (dt > 1) {
   2419        while (time < t1) {
   2420          if (!(number(time) % dt)) times.push(new Date(+time));
   2421          step(time, 1);
   2422        }
   2423      } else {
   2424        while (time < t1) times.push(new Date(+time)), step(time, 1);
   2425      }
   2426      return times;
   2427    }
   2428    function range_utc(t0, t1, dt) {
   2429      try {
   2430        d3_date = d3_date_utc;
   2431        var utc = new d3_date_utc();
   2432        utc._ = t0;
   2433        return range(utc, t1, dt);
   2434      } finally {
   2435        d3_date = Date;
   2436      }
   2437    }
   2438    local.floor = local;
   2439    local.round = round;
   2440    local.ceil = ceil;
   2441    local.offset = offset;
   2442    local.range = range;
   2443    var utc = local.utc = d3_time_interval_utc(local);
   2444    utc.floor = utc;
   2445    utc.round = d3_time_interval_utc(round);
   2446    utc.ceil = d3_time_interval_utc(ceil);
   2447    utc.offset = d3_time_interval_utc(offset);
   2448    utc.range = range_utc;
   2449    return local;
   2450  }
   2451  function d3_time_interval_utc(method) {
   2452    return function(date, k) {
   2453      try {
   2454        d3_date = d3_date_utc;
   2455        var utc = new d3_date_utc();
   2456        utc._ = date;
   2457        return method(utc, k)._;
   2458      } finally {
   2459        d3_date = Date;
   2460      }
   2461    };
   2462  }
   2463  d3_time.year = d3_time_interval(function(date) {
   2464    date = d3_time.day(date);
   2465    date.setMonth(0, 1);
   2466    return date;
   2467  }, function(date, offset) {
   2468    date.setFullYear(date.getFullYear() + offset);
   2469  }, function(date) {
   2470    return date.getFullYear();
   2471  });
   2472  d3_time.years = d3_time.year.range;
   2473  d3_time.years.utc = d3_time.year.utc.range;
   2474  d3_time.day = d3_time_interval(function(date) {
   2475    var day = new d3_date(2e3, 0);
   2476    day.setFullYear(date.getFullYear(), date.getMonth(), date.getDate());
   2477    return day;
   2478  }, function(date, offset) {
   2479    date.setDate(date.getDate() + offset);
   2480  }, function(date) {
   2481    return date.getDate() - 1;
   2482  });
   2483  d3_time.days = d3_time.day.range;
   2484  d3_time.days.utc = d3_time.day.utc.range;
   2485  d3_time.dayOfYear = function(date) {
   2486    var year = d3_time.year(date);
   2487    return Math.floor((date - year - (date.getTimezoneOffset() - year.getTimezoneOffset()) * 6e4) / 864e5);
   2488  };
   2489  [ "sunday", "monday", "tuesday", "wednesday", "thursday", "friday", "saturday" ].forEach(function(day, i) {
   2490    i = 7 - i;
   2491    var interval = d3_time[day] = d3_time_interval(function(date) {
   2492      (date = d3_time.day(date)).setDate(date.getDate() - (date.getDay() + i) % 7);
   2493      return date;
   2494    }, function(date, offset) {
   2495      date.setDate(date.getDate() + Math.floor(offset) * 7);
   2496    }, function(date) {
   2497      var day = d3_time.year(date).getDay();
   2498      return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7) - (day !== i);
   2499    });
   2500    d3_time[day + "s"] = interval.range;
   2501    d3_time[day + "s"].utc = interval.utc.range;
   2502    d3_time[day + "OfYear"] = function(date) {
   2503      var day = d3_time.year(date).getDay();
   2504      return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7);
   2505    };
   2506  });
   2507  d3_time.week = d3_time.sunday;
   2508  d3_time.weeks = d3_time.sunday.range;
   2509  d3_time.weeks.utc = d3_time.sunday.utc.range;
   2510  d3_time.weekOfYear = d3_time.sundayOfYear;
   2511  function d3_locale_timeFormat(locale) {
   2512    var locale_dateTime = locale.dateTime, locale_date = locale.date, locale_time = locale.time, locale_periods = locale.periods, locale_days = locale.days, locale_shortDays = locale.shortDays, locale_months = locale.months, locale_shortMonths = locale.shortMonths;
   2513    function d3_time_format(template) {
   2514      var n = template.length;
   2515      function format(date) {
   2516        var string = [], i = -1, j = 0, c, p, f;
   2517        while (++i < n) {
   2518          if (template.charCodeAt(i) === 37) {
   2519            string.push(template.slice(j, i));
   2520            if ((p = d3_time_formatPads[c = template.charAt(++i)]) != null) c = template.charAt(++i);
   2521            if (f = d3_time_formats[c]) c = f(date, p == null ? c === "e" ? " " : "0" : p);
   2522            string.push(c);
   2523            j = i + 1;
   2524          }
   2525        }
   2526        string.push(template.slice(j, i));
   2527        return string.join("");
   2528      }
   2529      format.parse = function(string) {
   2530        var d = {
   2531          y: 1900,
   2532          m: 0,
   2533          d: 1,
   2534          H: 0,
   2535          M: 0,
   2536          S: 0,
   2537          L: 0,
   2538          Z: null
   2539        }, i = d3_time_parse(d, template, string, 0);
   2540        if (i != string.length) return null;
   2541        if ("p" in d) d.H = d.H % 12 + d.p * 12;
   2542        var localZ = d.Z != null && d3_date !== d3_date_utc, date = new (localZ ? d3_date_utc : d3_date)();
   2543        if ("j" in d) date.setFullYear(d.y, 0, d.j); else if ("W" in d || "U" in d) {
   2544          if (!("w" in d)) d.w = "W" in d ? 1 : 0;
   2545          date.setFullYear(d.y, 0, 1);
   2546          date.setFullYear(d.y, 0, "W" in d ? (d.w + 6) % 7 + d.W * 7 - (date.getDay() + 5) % 7 : d.w + d.U * 7 - (date.getDay() + 6) % 7);
   2547        } else date.setFullYear(d.y, d.m, d.d);
   2548        date.setHours(d.H + (d.Z / 100 | 0), d.M + d.Z % 100, d.S, d.L);
   2549        return localZ ? date._ : date;
   2550      };
   2551      format.toString = function() {
   2552        return template;
   2553      };
   2554      return format;
   2555    }
   2556    function d3_time_parse(date, template, string, j) {
   2557      var c, p, t, i = 0, n = template.length, m = string.length;
   2558      while (i < n) {
   2559        if (j >= m) return -1;
   2560        c = template.charCodeAt(i++);
   2561        if (c === 37) {
   2562          t = template.charAt(i++);
   2563          p = d3_time_parsers[t in d3_time_formatPads ? template.charAt(i++) : t];
   2564          if (!p || (j = p(date, string, j)) < 0) return -1;
   2565        } else if (c != string.charCodeAt(j++)) {
   2566          return -1;
   2567        }
   2568      }
   2569      return j;
   2570    }
   2571    d3_time_format.utc = function(template) {
   2572      var local = d3_time_format(template);
   2573      function format(date) {
   2574        try {
   2575          d3_date = d3_date_utc;
   2576          var utc = new d3_date();
   2577          utc._ = date;
   2578          return local(utc);
   2579        } finally {
   2580          d3_date = Date;
   2581        }
   2582      }
   2583      format.parse = function(string) {
   2584        try {
   2585          d3_date = d3_date_utc;
   2586          var date = local.parse(string);
   2587          return date && date._;
   2588        } finally {
   2589          d3_date = Date;
   2590        }
   2591      };
   2592      format.toString = local.toString;
   2593      return format;
   2594    };
   2595    d3_time_format.multi = d3_time_format.utc.multi = d3_time_formatMulti;
   2596    var d3_time_periodLookup = d3.map(), d3_time_dayRe = d3_time_formatRe(locale_days), d3_time_dayLookup = d3_time_formatLookup(locale_days), d3_time_dayAbbrevRe = d3_time_formatRe(locale_shortDays), d3_time_dayAbbrevLookup = d3_time_formatLookup(locale_shortDays), d3_time_monthRe = d3_time_formatRe(locale_months), d3_time_monthLookup = d3_time_formatLookup(locale_months), d3_time_monthAbbrevRe = d3_time_formatRe(locale_shortMonths), d3_time_monthAbbrevLookup = d3_time_formatLookup(locale_shortMonths);
   2597    locale_periods.forEach(function(p, i) {
   2598      d3_time_periodLookup.set(p.toLowerCase(), i);
   2599    });
   2600    var d3_time_formats = {
   2601      a: function(d) {
   2602        return locale_shortDays[d.getDay()];
   2603      },
   2604      A: function(d) {
   2605        return locale_days[d.getDay()];
   2606      },
   2607      b: function(d) {
   2608        return locale_shortMonths[d.getMonth()];
   2609      },
   2610      B: function(d) {
   2611        return locale_months[d.getMonth()];
   2612      },
   2613      c: d3_time_format(locale_dateTime),
   2614      d: function(d, p) {
   2615        return d3_time_formatPad(d.getDate(), p, 2);
   2616      },
   2617      e: function(d, p) {
   2618        return d3_time_formatPad(d.getDate(), p, 2);
   2619      },
   2620      H: function(d, p) {
   2621        return d3_time_formatPad(d.getHours(), p, 2);
   2622      },
   2623      I: function(d, p) {
   2624        return d3_time_formatPad(d.getHours() % 12 || 12, p, 2);
   2625      },
   2626      j: function(d, p) {
   2627        return d3_time_formatPad(1 + d3_time.dayOfYear(d), p, 3);
   2628      },
   2629      L: function(d, p) {
   2630        return d3_time_formatPad(d.getMilliseconds(), p, 3);
   2631      },
   2632      m: function(d, p) {
   2633        return d3_time_formatPad(d.getMonth() + 1, p, 2);
   2634      },
   2635      M: function(d, p) {
   2636        return d3_time_formatPad(d.getMinutes(), p, 2);
   2637      },
   2638      p: function(d) {
   2639        return locale_periods[+(d.getHours() >= 12)];
   2640      },
   2641      S: function(d, p) {
   2642        return d3_time_formatPad(d.getSeconds(), p, 2);
   2643      },
   2644      U: function(d, p) {
   2645        return d3_time_formatPad(d3_time.sundayOfYear(d), p, 2);
   2646      },
   2647      w: function(d) {
   2648        return d.getDay();
   2649      },
   2650      W: function(d, p) {
   2651        return d3_time_formatPad(d3_time.mondayOfYear(d), p, 2);
   2652      },
   2653      x: d3_time_format(locale_date),
   2654      X: d3_time_format(locale_time),
   2655      y: function(d, p) {
   2656        return d3_time_formatPad(d.getFullYear() % 100, p, 2);
   2657      },
   2658      Y: function(d, p) {
   2659        return d3_time_formatPad(d.getFullYear() % 1e4, p, 4);
   2660      },
   2661      Z: d3_time_zone,
   2662      "%": function() {
   2663        return "%";
   2664      }
   2665    };
   2666    var d3_time_parsers = {
   2667      a: d3_time_parseWeekdayAbbrev,
   2668      A: d3_time_parseWeekday,
   2669      b: d3_time_parseMonthAbbrev,
   2670      B: d3_time_parseMonth,
   2671      c: d3_time_parseLocaleFull,
   2672      d: d3_time_parseDay,
   2673      e: d3_time_parseDay,
   2674      H: d3_time_parseHour24,
   2675      I: d3_time_parseHour24,
   2676      j: d3_time_parseDayOfYear,
   2677      L: d3_time_parseMilliseconds,
   2678      m: d3_time_parseMonthNumber,
   2679      M: d3_time_parseMinutes,
   2680      p: d3_time_parseAmPm,
   2681      S: d3_time_parseSeconds,
   2682      U: d3_time_parseWeekNumberSunday,
   2683      w: d3_time_parseWeekdayNumber,
   2684      W: d3_time_parseWeekNumberMonday,
   2685      x: d3_time_parseLocaleDate,
   2686      X: d3_time_parseLocaleTime,
   2687      y: d3_time_parseYear,
   2688      Y: d3_time_parseFullYear,
   2689      Z: d3_time_parseZone,
   2690      "%": d3_time_parseLiteralPercent
   2691    };
   2692    function d3_time_parseWeekdayAbbrev(date, string, i) {
   2693      d3_time_dayAbbrevRe.lastIndex = 0;
   2694      var n = d3_time_dayAbbrevRe.exec(string.slice(i));
   2695      return n ? (date.w = d3_time_dayAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
   2696    }
   2697    function d3_time_parseWeekday(date, string, i) {
   2698      d3_time_dayRe.lastIndex = 0;
   2699      var n = d3_time_dayRe.exec(string.slice(i));
   2700      return n ? (date.w = d3_time_dayLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
   2701    }
   2702    function d3_time_parseMonthAbbrev(date, string, i) {
   2703      d3_time_monthAbbrevRe.lastIndex = 0;
   2704      var n = d3_time_monthAbbrevRe.exec(string.slice(i));
   2705      return n ? (date.m = d3_time_monthAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
   2706    }
   2707    function d3_time_parseMonth(date, string, i) {
   2708      d3_time_monthRe.lastIndex = 0;
   2709      var n = d3_time_monthRe.exec(string.slice(i));
   2710      return n ? (date.m = d3_time_monthLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
   2711    }
   2712    function d3_time_parseLocaleFull(date, string, i) {
   2713      return d3_time_parse(date, d3_time_formats.c.toString(), string, i);
   2714    }
   2715    function d3_time_parseLocaleDate(date, string, i) {
   2716      return d3_time_parse(date, d3_time_formats.x.toString(), string, i);
   2717    }
   2718    function d3_time_parseLocaleTime(date, string, i) {
   2719      return d3_time_parse(date, d3_time_formats.X.toString(), string, i);
   2720    }
   2721    function d3_time_parseAmPm(date, string, i) {
   2722      var n = d3_time_periodLookup.get(string.slice(i, i += 2).toLowerCase());
   2723      return n == null ? -1 : (date.p = n, i);
   2724    }
   2725    return d3_time_format;
   2726  }
   2727  var d3_time_formatPads = {
   2728    "-": "",
   2729    _: " ",
   2730    "0": "0"
   2731  }, d3_time_numberRe = /^\s*\d+/, d3_time_percentRe = /^%/;
   2732  function d3_time_formatPad(value, fill, width) {
   2733    var sign = value < 0 ? "-" : "", string = (sign ? -value : value) + "", length = string.length;
   2734    return sign + (length < width ? new Array(width - length + 1).join(fill) + string : string);
   2735  }
   2736  function d3_time_formatRe(names) {
   2737    return new RegExp("^(?:" + names.map(d3.requote).join("|") + ")", "i");
   2738  }
   2739  function d3_time_formatLookup(names) {
   2740    var map = new d3_Map(), i = -1, n = names.length;
   2741    while (++i < n) map.set(names[i].toLowerCase(), i);
   2742    return map;
   2743  }
   2744  function d3_time_parseWeekdayNumber(date, string, i) {
   2745    d3_time_numberRe.lastIndex = 0;
   2746    var n = d3_time_numberRe.exec(string.slice(i, i + 1));
   2747    return n ? (date.w = +n[0], i + n[0].length) : -1;
   2748  }
   2749  function d3_time_parseWeekNumberSunday(date, string, i) {
   2750    d3_time_numberRe.lastIndex = 0;
   2751    var n = d3_time_numberRe.exec(string.slice(i));
   2752    return n ? (date.U = +n[0], i + n[0].length) : -1;
   2753  }
   2754  function d3_time_parseWeekNumberMonday(date, string, i) {
   2755    d3_time_numberRe.lastIndex = 0;
   2756    var n = d3_time_numberRe.exec(string.slice(i));
   2757    return n ? (date.W = +n[0], i + n[0].length) : -1;
   2758  }
   2759  function d3_time_parseFullYear(date, string, i) {
   2760    d3_time_numberRe.lastIndex = 0;
   2761    var n = d3_time_numberRe.exec(string.slice(i, i + 4));
   2762    return n ? (date.y = +n[0], i + n[0].length) : -1;
   2763  }
   2764  function d3_time_parseYear(date, string, i) {
   2765    d3_time_numberRe.lastIndex = 0;
   2766    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
   2767    return n ? (date.y = d3_time_expandYear(+n[0]), i + n[0].length) : -1;
   2768  }
   2769  function d3_time_parseZone(date, string, i) {
   2770    return /^[+-]\d{4}$/.test(string = string.slice(i, i + 5)) ? (date.Z = -string, 
   2771    i + 5) : -1;
   2772  }
   2773  function d3_time_expandYear(d) {
   2774    return d + (d > 68 ? 1900 : 2e3);
   2775  }
   2776  function d3_time_parseMonthNumber(date, string, i) {
   2777    d3_time_numberRe.lastIndex = 0;
   2778    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
   2779    return n ? (date.m = n[0] - 1, i + n[0].length) : -1;
   2780  }
   2781  function d3_time_parseDay(date, string, i) {
   2782    d3_time_numberRe.lastIndex = 0;
   2783    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
   2784    return n ? (date.d = +n[0], i + n[0].length) : -1;
   2785  }
   2786  function d3_time_parseDayOfYear(date, string, i) {
   2787    d3_time_numberRe.lastIndex = 0;
   2788    var n = d3_time_numberRe.exec(string.slice(i, i + 3));
   2789    return n ? (date.j = +n[0], i + n[0].length) : -1;
   2790  }
   2791  function d3_time_parseHour24(date, string, i) {
   2792    d3_time_numberRe.lastIndex = 0;
   2793    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
   2794    return n ? (date.H = +n[0], i + n[0].length) : -1;
   2795  }
   2796  function d3_time_parseMinutes(date, string, i) {
   2797    d3_time_numberRe.lastIndex = 0;
   2798    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
   2799    return n ? (date.M = +n[0], i + n[0].length) : -1;
   2800  }
   2801  function d3_time_parseSeconds(date, string, i) {
   2802    d3_time_numberRe.lastIndex = 0;
   2803    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
   2804    return n ? (date.S = +n[0], i + n[0].length) : -1;
   2805  }
   2806  function d3_time_parseMilliseconds(date, string, i) {
   2807    d3_time_numberRe.lastIndex = 0;
   2808    var n = d3_time_numberRe.exec(string.slice(i, i + 3));
   2809    return n ? (date.L = +n[0], i + n[0].length) : -1;
   2810  }
   2811  function d3_time_zone(d) {
   2812    var z = d.getTimezoneOffset(), zs = z > 0 ? "-" : "+", zh = abs(z) / 60 | 0, zm = abs(z) % 60;
   2813    return zs + d3_time_formatPad(zh, "0", 2) + d3_time_formatPad(zm, "0", 2);
   2814  }
   2815  function d3_time_parseLiteralPercent(date, string, i) {
   2816    d3_time_percentRe.lastIndex = 0;
   2817    var n = d3_time_percentRe.exec(string.slice(i, i + 1));
   2818    return n ? i + n[0].length : -1;
   2819  }
   2820  function d3_time_formatMulti(formats) {
   2821    var n = formats.length, i = -1;
   2822    while (++i < n) formats[i][0] = this(formats[i][0]);
   2823    return function(date) {
   2824      var i = 0, f = formats[i];
   2825      while (!f[1](date)) f = formats[++i];
   2826      return f[0](date);
   2827    };
   2828  }
   2829  d3.locale = function(locale) {
   2830    return {
   2831      numberFormat: d3_locale_numberFormat(locale),
   2832      timeFormat: d3_locale_timeFormat(locale)
   2833    };
   2834  };
   2835  var d3_locale_enUS = d3.locale({
   2836    decimal: ".",
   2837    thousands: ",",
   2838    grouping: [ 3 ],
   2839    currency: [ "$", "" ],
   2840    dateTime: "%a %b %e %X %Y",
   2841    date: "%m/%d/%Y",
   2842    time: "%H:%M:%S",
   2843    periods: [ "AM", "PM" ],
   2844    days: [ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ],
   2845    shortDays: [ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" ],
   2846    months: [ "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" ],
   2847    shortMonths: [ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" ]
   2848  });
   2849  d3.format = d3_locale_enUS.numberFormat;
   2850  d3.geo = {};
   2851  function d3_adder() {}
   2852  d3_adder.prototype = {
   2853    s: 0,
   2854    t: 0,
   2855    add: function(y) {
   2856      d3_adderSum(y, this.t, d3_adderTemp);
   2857      d3_adderSum(d3_adderTemp.s, this.s, this);
   2858      if (this.s) this.t += d3_adderTemp.t; else this.s = d3_adderTemp.t;
   2859    },
   2860    reset: function() {
   2861      this.s = this.t = 0;
   2862    },
   2863    valueOf: function() {
   2864      return this.s;
   2865    }
   2866  };
   2867  var d3_adderTemp = new d3_adder();
   2868  function d3_adderSum(a, b, o) {
   2869    var x = o.s = a + b, bv = x - a, av = x - bv;
   2870    o.t = a - av + (b - bv);
   2871  }
   2872  d3.geo.stream = function(object, listener) {
   2873    if (object && d3_geo_streamObjectType.hasOwnProperty(object.type)) {
   2874      d3_geo_streamObjectType[object.type](object, listener);
   2875    } else {
   2876      d3_geo_streamGeometry(object, listener);
   2877    }
   2878  };
   2879  function d3_geo_streamGeometry(geometry, listener) {
   2880    if (geometry && d3_geo_streamGeometryType.hasOwnProperty(geometry.type)) {
   2881      d3_geo_streamGeometryType[geometry.type](geometry, listener);
   2882    }
   2883  }
   2884  var d3_geo_streamObjectType = {
   2885    Feature: function(feature, listener) {
   2886      d3_geo_streamGeometry(feature.geometry, listener);
   2887    },
   2888    FeatureCollection: function(object, listener) {
   2889      var features = object.features, i = -1, n = features.length;
   2890      while (++i < n) d3_geo_streamGeometry(features[i].geometry, listener);
   2891    }
   2892  };
   2893  var d3_geo_streamGeometryType = {
   2894    Sphere: function(object, listener) {
   2895      listener.sphere();
   2896    },
   2897    Point: function(object, listener) {
   2898      object = object.coordinates;
   2899      listener.point(object[0], object[1], object[2]);
   2900    },
   2901    MultiPoint: function(object, listener) {
   2902      var coordinates = object.coordinates, i = -1, n = coordinates.length;
   2903      while (++i < n) object = coordinates[i], listener.point(object[0], object[1], object[2]);
   2904    },
   2905    LineString: function(object, listener) {
   2906      d3_geo_streamLine(object.coordinates, listener, 0);
   2907    },
   2908    MultiLineString: function(object, listener) {
   2909      var coordinates = object.coordinates, i = -1, n = coordinates.length;
   2910      while (++i < n) d3_geo_streamLine(coordinates[i], listener, 0);
   2911    },
   2912    Polygon: function(object, listener) {
   2913      d3_geo_streamPolygon(object.coordinates, listener);
   2914    },
   2915    MultiPolygon: function(object, listener) {
   2916      var coordinates = object.coordinates, i = -1, n = coordinates.length;
   2917      while (++i < n) d3_geo_streamPolygon(coordinates[i], listener);
   2918    },
   2919    GeometryCollection: function(object, listener) {
   2920      var geometries = object.geometries, i = -1, n = geometries.length;
   2921      while (++i < n) d3_geo_streamGeometry(geometries[i], listener);
   2922    }
   2923  };
   2924  function d3_geo_streamLine(coordinates, listener, closed) {
   2925    var i = -1, n = coordinates.length - closed, coordinate;
   2926    listener.lineStart();
   2927    while (++i < n) coordinate = coordinates[i], listener.point(coordinate[0], coordinate[1], coordinate[2]);
   2928    listener.lineEnd();
   2929  }
   2930  function d3_geo_streamPolygon(coordinates, listener) {
   2931    var i = -1, n = coordinates.length;
   2932    listener.polygonStart();
   2933    while (++i < n) d3_geo_streamLine(coordinates[i], listener, 1);
   2934    listener.polygonEnd();
   2935  }
   2936  d3.geo.area = function(object) {
   2937    d3_geo_areaSum = 0;
   2938    d3.geo.stream(object, d3_geo_area);
   2939    return d3_geo_areaSum;
   2940  };
   2941  var d3_geo_areaSum, d3_geo_areaRingSum = new d3_adder();
   2942  var d3_geo_area = {
   2943    sphere: function() {
   2944      d3_geo_areaSum += 4 * π;
   2945    },
   2946    point: d3_noop,
   2947    lineStart: d3_noop,
   2948    lineEnd: d3_noop,
   2949    polygonStart: function() {
   2950      d3_geo_areaRingSum.reset();
   2951      d3_geo_area.lineStart = d3_geo_areaRingStart;
   2952    },
   2953    polygonEnd: function() {
   2954      var area = 2 * d3_geo_areaRingSum;
   2955      d3_geo_areaSum += area < 0 ? 4 * π + area : area;
   2956      d3_geo_area.lineStart = d3_geo_area.lineEnd = d3_geo_area.point = d3_noop;
   2957    }
   2958  };
   2959  function d3_geo_areaRingStart() {
   2960    var λ00, φ00, λ0, cosφ0, sinφ0;
   2961    d3_geo_area.point = function(λ, φ) {
   2962      d3_geo_area.point = nextPoint;
   2963      λ0 = (λ00 = λ) * d3_radians, cosφ0 = Math.cos(φ = (φ00 = φ) * d3_radians / 2 + π / 4), 
   2964      sinφ0 = Math.sin(φ);
   2965    };
   2966    function nextPoint(λ, φ) {
   2967      λ *= d3_radians;
   2968      φ = φ * d3_radians / 2 + π / 4;
   2969      var dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, cosφ = Math.cos(φ), sinφ = Math.sin(φ), k = sinφ0 * sinφ, u = cosφ0 * cosφ + k * Math.cos(adλ), v = k * sdλ * Math.sin(adλ);
   2970      d3_geo_areaRingSum.add(Math.atan2(v, u));
   2971      λ0 = λ, cosφ0 = cosφ, sinφ0 = sinφ;
   2972    }
   2973    d3_geo_area.lineEnd = function() {
   2974      nextPoint(λ00, φ00);
   2975    };
   2976  }
   2977  function d3_geo_cartesian(spherical) {
   2978    var λ = spherical[0], φ = spherical[1], cosφ = Math.cos(φ);
   2979    return [ cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ) ];
   2980  }
   2981  function d3_geo_cartesianDot(a, b) {
   2982    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
   2983  }
   2984  function d3_geo_cartesianCross(a, b) {
   2985    return [ a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0] ];
   2986  }
   2987  function d3_geo_cartesianAdd(a, b) {
   2988    a[0] += b[0];
   2989    a[1] += b[1];
   2990    a[2] += b[2];
   2991  }
   2992  function d3_geo_cartesianScale(vector, k) {
   2993    return [ vector[0] * k, vector[1] * k, vector[2] * k ];
   2994  }
   2995  function d3_geo_cartesianNormalize(d) {
   2996    var l = Math.sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]);
   2997    d[0] /= l;
   2998    d[1] /= l;
   2999    d[2] /= l;
   3000  }
   3001  function d3_geo_spherical(cartesian) {
   3002    return [ Math.atan2(cartesian[1], cartesian[0]), d3_asin(cartesian[2]) ];
   3003  }
   3004  function d3_geo_sphericalEqual(a, b) {
   3005    return abs(a[0] - b[0]) < ε && abs(a[1] - b[1]) < ε;
   3006  }
   3007  d3.geo.bounds = function() {
   3008    var λ0, φ0, λ1, φ1, λ_, λ__, φ__, p0, dλSum, ranges, range;
   3009    var bound = {
   3010      point: point,
   3011      lineStart: lineStart,
   3012      lineEnd: lineEnd,
   3013      polygonStart: function() {
   3014        bound.point = ringPoint;
   3015        bound.lineStart = ringStart;
   3016        bound.lineEnd = ringEnd;
   3017        dλSum = 0;
   3018        d3_geo_area.polygonStart();
   3019      },
   3020      polygonEnd: function() {
   3021        d3_geo_area.polygonEnd();
   3022        bound.point = point;
   3023        bound.lineStart = lineStart;
   3024        bound.lineEnd = lineEnd;
   3025        if (d3_geo_areaRingSum < 0) λ0 = -(λ1 = 180), φ0 = -(φ1 = 90); else if (dλSum > ε) φ1 = 90; else if (dλSum < -ε) φ0 = -90;
   3026        range[0] = λ0, range[1] = λ1;
   3027      }
   3028    };
   3029    function point(λ, φ) {
   3030      ranges.push(range = [ λ0 = λ, λ1 = λ ]);
   3031      if (φ < φ0) φ0 = φ;
   3032      if (φ > φ1) φ1 = φ;
   3033    }
   3034    function linePoint(λ, φ) {
   3035      var p = d3_geo_cartesian([ λ * d3_radians, φ * d3_radians ]);
   3036      if (p0) {
   3037        var normal = d3_geo_cartesianCross(p0, p), equatorial = [ normal[1], -normal[0], 0 ], inflection = d3_geo_cartesianCross(equatorial, normal);
   3038        d3_geo_cartesianNormalize(inflection);
   3039        inflection = d3_geo_spherical(inflection);
   3040        var dλ = λ - λ_, s = dλ > 0 ? 1 : -1, λi = inflection[0] * d3_degrees * s, antimeridian = abs(dλ) > 180;
   3041        if (antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
   3042          var φi = inflection[1] * d3_degrees;
   3043          if (φi > φ1) φ1 = φi;
   3044        } else if (λi = (λi + 360) % 360 - 180, antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
   3045          var φi = -inflection[1] * d3_degrees;
   3046          if (φi < φ0) φ0 = φi;
   3047        } else {
   3048          if (φ < φ0) φ0 = φ;
   3049          if (φ > φ1) φ1 = φ;
   3050        }
   3051        if (antimeridian) {
   3052          if (λ < λ_) {
   3053            if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
   3054          } else {
   3055            if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
   3056          }
   3057        } else {
   3058          if (λ1 >= λ0) {
   3059            if (λ < λ0) λ0 = λ;
   3060            if (λ > λ1) λ1 = λ;
   3061          } else {
   3062            if (λ > λ_) {
   3063              if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
   3064            } else {
   3065              if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
   3066            }
   3067          }
   3068        }
   3069      } else {
   3070        point(λ, φ);
   3071      }
   3072      p0 = p, λ_ = λ;
   3073    }
   3074    function lineStart() {
   3075      bound.point = linePoint;
   3076    }
   3077    function lineEnd() {
   3078      range[0] = λ0, range[1] = λ1;
   3079      bound.point = point;
   3080      p0 = null;
   3081    }
   3082    function ringPoint(λ, φ) {
   3083      if (p0) {
   3084        var dλ = λ - λ_;
   3085        dλSum += abs(dλ) > 180 ? dλ + (dλ > 0 ? 360 : -360) : dλ;
   3086      } else λ__ = λ, φ__ = φ;
   3087      d3_geo_area.point(λ, φ);
   3088      linePoint(λ, φ);
   3089    }
   3090    function ringStart() {
   3091      d3_geo_area.lineStart();
   3092    }
   3093    function ringEnd() {
   3094      ringPoint(λ__, φ__);
   3095      d3_geo_area.lineEnd();
   3096      if (abs(dλSum) > ε) λ0 = -(λ1 = 180);
   3097      range[0] = λ0, range[1] = λ1;
   3098      p0 = null;
   3099    }
   3100    function angle(λ0, λ1) {
   3101      return (λ1 -= λ0) < 0 ? λ1 + 360 : λ1;
   3102    }
   3103    function compareRanges(a, b) {
   3104      return a[0] - b[0];
   3105    }
   3106    function withinRange(x, range) {
   3107      return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] || range[1] < x;
   3108    }
   3109    return function(feature) {
   3110      φ1 = λ1 = -(λ0 = φ0 = Infinity);
   3111      ranges = [];
   3112      d3.geo.stream(feature, bound);
   3113      var n = ranges.length;
   3114      if (n) {
   3115        ranges.sort(compareRanges);
   3116        for (var i = 1, a = ranges[0], b, merged = [ a ]; i < n; ++i) {
   3117          b = ranges[i];
   3118          if (withinRange(b[0], a) || withinRange(b[1], a)) {
   3119            if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1];
   3120            if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0];
   3121          } else {
   3122            merged.push(a = b);
   3123          }
   3124        }
   3125        var best = -Infinity, dλ;
   3126        for (var n = merged.length - 1, i = 0, a = merged[n], b; i <= n; a = b, ++i) {
   3127          b = merged[i];
   3128          if ((dλ = angle(a[1], b[0])) > best) best = dλ, λ0 = b[0], λ1 = a[1];
   3129        }
   3130      }
   3131      ranges = range = null;
   3132      return λ0 === Infinity || φ0 === Infinity ? [ [ NaN, NaN ], [ NaN, NaN ] ] : [ [ λ0, φ0 ], [ λ1, φ1 ] ];
   3133    };
   3134  }();
   3135  d3.geo.centroid = function(object) {
   3136    d3_geo_centroidW0 = d3_geo_centroidW1 = d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
   3137    d3.geo.stream(object, d3_geo_centroid);
   3138    var x = d3_geo_centroidX2, y = d3_geo_centroidY2, z = d3_geo_centroidZ2, m = x * x + y * y + z * z;
   3139    if (m < ε2) {
   3140      x = d3_geo_centroidX1, y = d3_geo_centroidY1, z = d3_geo_centroidZ1;
   3141      if (d3_geo_centroidW1 < ε) x = d3_geo_centroidX0, y = d3_geo_centroidY0, z = d3_geo_centroidZ0;
   3142      m = x * x + y * y + z * z;
   3143      if (m < ε2) return [ NaN, NaN ];
   3144    }
   3145    return [ Math.atan2(y, x) * d3_degrees, d3_asin(z / Math.sqrt(m)) * d3_degrees ];
   3146  };
   3147  var d3_geo_centroidW0, d3_geo_centroidW1, d3_geo_centroidX0, d3_geo_centroidY0, d3_geo_centroidZ0, d3_geo_centroidX1, d3_geo_centroidY1, d3_geo_centroidZ1, d3_geo_centroidX2, d3_geo_centroidY2, d3_geo_centroidZ2;
   3148  var d3_geo_centroid = {
   3149    sphere: d3_noop,
   3150    point: d3_geo_centroidPoint,
   3151    lineStart: d3_geo_centroidLineStart,
   3152    lineEnd: d3_geo_centroidLineEnd,
   3153    polygonStart: function() {
   3154      d3_geo_centroid.lineStart = d3_geo_centroidRingStart;
   3155    },
   3156    polygonEnd: function() {
   3157      d3_geo_centroid.lineStart = d3_geo_centroidLineStart;
   3158    }
   3159  };
   3160  function d3_geo_centroidPoint(λ, φ) {
   3161    λ *= d3_radians;
   3162    var cosφ = Math.cos(φ *= d3_radians);
   3163    d3_geo_centroidPointXYZ(cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ));
   3164  }
   3165  function d3_geo_centroidPointXYZ(x, y, z) {
   3166    ++d3_geo_centroidW0;
   3167    d3_geo_centroidX0 += (x - d3_geo_centroidX0) / d3_geo_centroidW0;
   3168    d3_geo_centroidY0 += (y - d3_geo_centroidY0) / d3_geo_centroidW0;
   3169    d3_geo_centroidZ0 += (z - d3_geo_centroidZ0) / d3_geo_centroidW0;
   3170  }
   3171  function d3_geo_centroidLineStart() {
   3172    var x0, y0, z0;
   3173    d3_geo_centroid.point = function(λ, φ) {
   3174      λ *= d3_radians;
   3175      var cosφ = Math.cos(φ *= d3_radians);
   3176      x0 = cosφ * Math.cos(λ);
   3177      y0 = cosφ * Math.sin(λ);
   3178      z0 = Math.sin(φ);
   3179      d3_geo_centroid.point = nextPoint;
   3180      d3_geo_centroidPointXYZ(x0, y0, z0);
   3181    };
   3182    function nextPoint(λ, φ) {
   3183      λ *= d3_radians;
   3184      var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), w = Math.atan2(Math.sqrt((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), x0 * x + y0 * y + z0 * z);
   3185      d3_geo_centroidW1 += w;
   3186      d3_geo_centroidX1 += w * (x0 + (x0 = x));
   3187      d3_geo_centroidY1 += w * (y0 + (y0 = y));
   3188      d3_geo_centroidZ1 += w * (z0 + (z0 = z));
   3189      d3_geo_centroidPointXYZ(x0, y0, z0);
   3190    }
   3191  }
   3192  function d3_geo_centroidLineEnd() {
   3193    d3_geo_centroid.point = d3_geo_centroidPoint;
   3194  }
   3195  function d3_geo_centroidRingStart() {
   3196    var λ00, φ00, x0, y0, z0;
   3197    d3_geo_centroid.point = function(λ, φ) {
   3198      λ00 = λ, φ00 = φ;
   3199      d3_geo_centroid.point = nextPoint;
   3200      λ *= d3_radians;
   3201      var cosφ = Math.cos(φ *= d3_radians);
   3202      x0 = cosφ * Math.cos(λ);
   3203      y0 = cosφ * Math.sin(λ);
   3204      z0 = Math.sin(φ);
   3205      d3_geo_centroidPointXYZ(x0, y0, z0);
   3206    };
   3207    d3_geo_centroid.lineEnd = function() {
   3208      nextPoint(λ00, φ00);
   3209      d3_geo_centroid.lineEnd = d3_geo_centroidLineEnd;
   3210      d3_geo_centroid.point = d3_geo_centroidPoint;
   3211    };
   3212    function nextPoint(λ, φ) {
   3213      λ *= d3_radians;
   3214      var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), cx = y0 * z - z0 * y, cy = z0 * x - x0 * z, cz = x0 * y - y0 * x, m = Math.sqrt(cx * cx + cy * cy + cz * cz), u = x0 * x + y0 * y + z0 * z, v = m && -d3_acos(u) / m, w = Math.atan2(m, u);
   3215      d3_geo_centroidX2 += v * cx;
   3216      d3_geo_centroidY2 += v * cy;
   3217      d3_geo_centroidZ2 += v * cz;
   3218      d3_geo_centroidW1 += w;
   3219      d3_geo_centroidX1 += w * (x0 + (x0 = x));
   3220      d3_geo_centroidY1 += w * (y0 + (y0 = y));
   3221      d3_geo_centroidZ1 += w * (z0 + (z0 = z));
   3222      d3_geo_centroidPointXYZ(x0, y0, z0);
   3223    }
   3224  }
   3225  function d3_geo_compose(a, b) {
   3226    function compose(x, y) {
   3227      return x = a(x, y), b(x[0], x[1]);
   3228    }
   3229    if (a.invert && b.invert) compose.invert = function(x, y) {
   3230      return x = b.invert(x, y), x && a.invert(x[0], x[1]);
   3231    };
   3232    return compose;
   3233  }
   3234  function d3_true() {
   3235    return true;
   3236  }
   3237  function d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener) {
   3238    var subject = [], clip = [];
   3239    segments.forEach(function(segment) {
   3240      if ((n = segment.length - 1) <= 0) return;
   3241      var n, p0 = segment[0], p1 = segment[n];
   3242      if (d3_geo_sphericalEqual(p0, p1)) {
   3243        listener.lineStart();
   3244        for (var i = 0; i < n; ++i) listener.point((p0 = segment[i])[0], p0[1]);
   3245        listener.lineEnd();
   3246        return;
   3247      }
   3248      var a = new d3_geo_clipPolygonIntersection(p0, segment, null, true), b = new d3_geo_clipPolygonIntersection(p0, null, a, false);
   3249      a.o = b;
   3250      subject.push(a);
   3251      clip.push(b);
   3252      a = new d3_geo_clipPolygonIntersection(p1, segment, null, false);
   3253      b = new d3_geo_clipPolygonIntersection(p1, null, a, true);
   3254      a.o = b;
   3255      subject.push(a);
   3256      clip.push(b);
   3257    });
   3258    clip.sort(compare);
   3259    d3_geo_clipPolygonLinkCircular(subject);
   3260    d3_geo_clipPolygonLinkCircular(clip);
   3261    if (!subject.length) return;
   3262    for (var i = 0, entry = clipStartInside, n = clip.length; i < n; ++i) {
   3263      clip[i].e = entry = !entry;
   3264    }
   3265    var start = subject[0], points, point;
   3266    while (1) {
   3267      var current = start, isSubject = true;
   3268      while (current.v) if ((current = current.n) === start) return;
   3269      points = current.z;
   3270      listener.lineStart();
   3271      do {
   3272        current.v = current.o.v = true;
   3273        if (current.e) {
   3274          if (isSubject) {
   3275            for (var i = 0, n = points.length; i < n; ++i) listener.point((point = points[i])[0], point[1]);
   3276          } else {
   3277            interpolate(current.x, current.n.x, 1, listener);
   3278          }
   3279          current = current.n;
   3280        } else {
   3281          if (isSubject) {
   3282            points = current.p.z;
   3283            for (var i = points.length - 1; i >= 0; --i) listener.point((point = points[i])[0], point[1]);
   3284          } else {
   3285            interpolate(current.x, current.p.x, -1, listener);
   3286          }
   3287          current = current.p;
   3288        }
   3289        current = current.o;
   3290        points = current.z;
   3291        isSubject = !isSubject;
   3292      } while (!current.v);
   3293      listener.lineEnd();
   3294    }
   3295  }
   3296  function d3_geo_clipPolygonLinkCircular(array) {
   3297    if (!(n = array.length)) return;
   3298    var n, i = 0, a = array[0], b;
   3299    while (++i < n) {
   3300      a.n = b = array[i];
   3301      b.p = a;
   3302      a = b;
   3303    }
   3304    a.n = b = array[0];
   3305    b.p = a;
   3306  }
   3307  function d3_geo_clipPolygonIntersection(point, points, other, entry) {
   3308    this.x = point;
   3309    this.z = points;
   3310    this.o = other;
   3311    this.e = entry;
   3312    this.v = false;
   3313    this.n = this.p = null;
   3314  }
   3315  function d3_geo_clip(pointVisible, clipLine, interpolate, clipStart) {
   3316    return function(rotate, listener) {
   3317      var line = clipLine(listener), rotatedClipStart = rotate.invert(clipStart[0], clipStart[1]);
   3318      var clip = {
   3319        point: point,
   3320        lineStart: lineStart,
   3321        lineEnd: lineEnd,
   3322        polygonStart: function() {
   3323          clip.point = pointRing;
   3324          clip.lineStart = ringStart;
   3325          clip.lineEnd = ringEnd;
   3326          segments = [];
   3327          polygon = [];
   3328        },
   3329        polygonEnd: function() {
   3330          clip.point = point;
   3331          clip.lineStart = lineStart;
   3332          clip.lineEnd = lineEnd;
   3333          segments = d3.merge(segments);
   3334          var clipStartInside = d3_geo_pointInPolygon(rotatedClipStart, polygon);
   3335          if (segments.length) {
   3336            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
   3337            d3_geo_clipPolygon(segments, d3_geo_clipSort, clipStartInside, interpolate, listener);
   3338          } else if (clipStartInside) {
   3339            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
   3340            listener.lineStart();
   3341            interpolate(null, null, 1, listener);
   3342            listener.lineEnd();
   3343          }
   3344          if (polygonStarted) listener.polygonEnd(), polygonStarted = false;
   3345          segments = polygon = null;
   3346        },
   3347        sphere: function() {
   3348          listener.polygonStart();
   3349          listener.lineStart();
   3350          interpolate(null, null, 1, listener);
   3351          listener.lineEnd();
   3352          listener.polygonEnd();
   3353        }
   3354      };
   3355      function point(λ, φ) {
   3356        var point = rotate(λ, φ);
   3357        if (pointVisible(λ = point[0], φ = point[1])) listener.point(λ, φ);
   3358      }
   3359      function pointLine(λ, φ) {
   3360        var point = rotate(λ, φ);
   3361        line.point(point[0], point[1]);
   3362      }
   3363      function lineStart() {
   3364        clip.point = pointLine;
   3365        line.lineStart();
   3366      }
   3367      function lineEnd() {
   3368        clip.point = point;
   3369        line.lineEnd();
   3370      }
   3371      var segments;
   3372      var buffer = d3_geo_clipBufferListener(), ringListener = clipLine(buffer), polygonStarted = false, polygon, ring;
   3373      function pointRing(λ, φ) {
   3374        ring.push([ λ, φ ]);
   3375        var point = rotate(λ, φ);
   3376        ringListener.point(point[0], point[1]);
   3377      }
   3378      function ringStart() {
   3379        ringListener.lineStart();
   3380        ring = [];
   3381      }
   3382      function ringEnd() {
   3383        pointRing(ring[0][0], ring[0][1]);
   3384        ringListener.lineEnd();
   3385        var clean = ringListener.clean(), ringSegments = buffer.buffer(), segment, n = ringSegments.length;
   3386        ring.pop();
   3387        polygon.push(ring);
   3388        ring = null;
   3389        if (!n) return;
   3390        if (clean & 1) {
   3391          segment = ringSegments[0];
   3392          var n = segment.length - 1, i = -1, point;
   3393          if (n > 0) {
   3394            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
   3395            listener.lineStart();
   3396            while (++i < n) listener.point((point = segment[i])[0], point[1]);
   3397            listener.lineEnd();
   3398          }
   3399          return;
   3400        }
   3401        if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift()));
   3402        segments.push(ringSegments.filter(d3_geo_clipSegmentLength1));
   3403      }
   3404      return clip;
   3405    };
   3406  }
   3407  function d3_geo_clipSegmentLength1(segment) {
   3408    return segment.length > 1;
   3409  }
   3410  function d3_geo_clipBufferListener() {
   3411    var lines = [], line;
   3412    return {
   3413      lineStart: function() {
   3414        lines.push(line = []);
   3415      },
   3416      point: function(λ, φ) {
   3417        line.push([ λ, φ ]);
   3418      },
   3419      lineEnd: d3_noop,
   3420      buffer: function() {
   3421        var buffer = lines;
   3422        lines = [];
   3423        line = null;
   3424        return buffer;
   3425      },
   3426      rejoin: function() {
   3427        if (lines.length > 1) lines.push(lines.pop().concat(lines.shift()));
   3428      }
   3429    };
   3430  }
   3431  function d3_geo_clipSort(a, b) {
   3432    return ((a = a.x)[0] < 0 ? a[1] - halfπ - ε : halfπ - a[1]) - ((b = b.x)[0] < 0 ? b[1] - halfπ - ε : halfπ - b[1]);
   3433  }
   3434  var d3_geo_clipAntimeridian = d3_geo_clip(d3_true, d3_geo_clipAntimeridianLine, d3_geo_clipAntimeridianInterpolate, [ -π, -π / 2 ]);
   3435  function d3_geo_clipAntimeridianLine(listener) {
   3436    var λ0 = NaN, φ0 = NaN, sλ0 = NaN, clean;
   3437    return {
   3438      lineStart: function() {
   3439        listener.lineStart();
   3440        clean = 1;
   3441      },
   3442      point: function(λ1, φ1) {
   3443        var sλ1 = λ1 > 0 ? π : -π, dλ = abs(λ1 - λ0);
   3444        if (abs(dλ - π) < ε) {
   3445          listener.point(λ0, φ0 = (φ0 + φ1) / 2 > 0 ? halfπ : -halfπ);
   3446          listener.point(sλ0, φ0);
   3447          listener.lineEnd();
   3448          listener.lineStart();
   3449          listener.point(sλ1, φ0);
   3450          listener.point(λ1, φ0);
   3451          clean = 0;
   3452        } else if (sλ0 !== sλ1 && dλ >= π) {
   3453          if (abs(λ0 - sλ0) < ε) λ0 -= sλ0 * ε;
   3454          if (abs(λ1 - sλ1) < ε) λ1 -= sλ1 * ε;
   3455          φ0 = d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1);
   3456          listener.point(sλ0, φ0);
   3457          listener.lineEnd();
   3458          listener.lineStart();
   3459          listener.point(sλ1, φ0);
   3460          clean = 0;
   3461        }
   3462        listener.point(λ0 = λ1, φ0 = φ1);
   3463        sλ0 = sλ1;
   3464      },
   3465      lineEnd: function() {
   3466        listener.lineEnd();
   3467        λ0 = φ0 = NaN;
   3468      },
   3469      clean: function() {
   3470        return 2 - clean;
   3471      }
   3472    };
   3473  }
   3474  function d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1) {
   3475    var cosφ0, cosφ1, sinλ0_λ1 = Math.sin(λ0 - λ1);
   3476    return abs(sinλ0_λ1) > ε ? Math.atan((Math.sin(φ0) * (cosφ1 = Math.cos(φ1)) * Math.sin(λ1) - Math.sin(φ1) * (cosφ0 = Math.cos(φ0)) * Math.sin(λ0)) / (cosφ0 * cosφ1 * sinλ0_λ1)) : (φ0 + φ1) / 2;
   3477  }
   3478  function d3_geo_clipAntimeridianInterpolate(from, to, direction, listener) {
   3479    var φ;
   3480    if (from == null) {
   3481      φ = direction * halfπ;
   3482      listener.point(-π, φ);
   3483      listener.point(0, φ);
   3484      listener.point(π, φ);
   3485      listener.point(π, 0);
   3486      listener.point(π, -φ);
   3487      listener.point(0, -φ);
   3488      listener.point(-π, -φ);
   3489      listener.point(-π, 0);
   3490      listener.point(-π, φ);
   3491    } else if (abs(from[0] - to[0]) > ε) {
   3492      var s = from[0] < to[0] ? π : -π;
   3493      φ = direction * s / 2;
   3494      listener.point(-s, φ);
   3495      listener.point(0, φ);
   3496      listener.point(s, φ);
   3497    } else {
   3498      listener.point(to[0], to[1]);
   3499    }
   3500  }
   3501  function d3_geo_pointInPolygon(point, polygon) {
   3502    var meridian = point[0], parallel = point[1], meridianNormal = [ Math.sin(meridian), -Math.cos(meridian), 0 ], polarAngle = 0, winding = 0;
   3503    d3_geo_areaRingSum.reset();
   3504    for (var i = 0, n = polygon.length; i < n; ++i) {
   3505      var ring = polygon[i], m = ring.length;
   3506      if (!m) continue;
   3507      var point0 = ring[0], λ0 = point0[0], φ0 = point0[1] / 2 + π / 4, sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), j = 1;
   3508      while (true) {
   3509        if (j === m) j = 0;
   3510        point = ring[j];
   3511        var λ = point[0], φ = point[1] / 2 + π / 4, sinφ = Math.sin(φ), cosφ = Math.cos(φ), dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, antimeridian = adλ > π, k = sinφ0 * sinφ;
   3512        d3_geo_areaRingSum.add(Math.atan2(k * sdλ * Math.sin(adλ), cosφ0 * cosφ + k * Math.cos(adλ)));
   3513        polarAngle += antimeridian ? dλ + sdλ * τ : dλ;
   3514        if (antimeridian ^ λ0 >= meridian ^ λ >= meridian) {
   3515          var arc = d3_geo_cartesianCross(d3_geo_cartesian(point0), d3_geo_cartesian(point));
   3516          d3_geo_cartesianNormalize(arc);
   3517          var intersection = d3_geo_cartesianCross(meridianNormal, arc);
   3518          d3_geo_cartesianNormalize(intersection);
   3519          var φarc = (antimeridian ^ dλ >= 0 ? -1 : 1) * d3_asin(intersection[2]);
   3520          if (parallel > φarc || parallel === φarc && (arc[0] || arc[1])) {
   3521            winding += antimeridian ^ dλ >= 0 ? 1 : -1;
   3522          }
   3523        }
   3524        if (!j++) break;
   3525        λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point;
   3526      }
   3527    }
   3528    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < -ε) ^ winding & 1;
   3529  }
   3530  function d3_geo_clipCircle(radius) {
   3531    var cr = Math.cos(radius), smallRadius = cr > 0, notHemisphere = abs(cr) > ε, interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians);
   3532    return d3_geo_clip(visible, clipLine, interpolate, smallRadius ? [ 0, -radius ] : [ -π, radius - π ]);
   3533    function visible(λ, φ) {
   3534      return Math.cos(λ) * Math.cos(φ) > cr;
   3535    }
   3536    function clipLine(listener) {
   3537      var point0, c0, v0, v00, clean;
   3538      return {
   3539        lineStart: function() {
   3540          v00 = v0 = false;
   3541          clean = 1;
   3542        },
   3543        point: function(λ, φ) {
   3544          var point1 = [ λ, φ ], point2, v = visible(λ, φ), c = smallRadius ? v ? 0 : code(λ, φ) : v ? code(λ + (λ < 0 ? π : -π), φ) : 0;
   3545          if (!point0 && (v00 = v0 = v)) listener.lineStart();
   3546          if (v !== v0) {
   3547            point2 = intersect(point0, point1);
   3548            if (d3_geo_sphericalEqual(point0, point2) || d3_geo_sphericalEqual(point1, point2)) {
   3549              point1[0] += ε;
   3550              point1[1] += ε;
   3551              v = visible(point1[0], point1[1]);
   3552            }
   3553          }
   3554          if (v !== v0) {
   3555            clean = 0;
   3556            if (v) {
   3557              listener.lineStart();
   3558              point2 = intersect(point1, point0);
   3559              listener.point(point2[0], point2[1]);
   3560            } else {
   3561              point2 = intersect(point0, point1);
   3562              listener.point(point2[0], point2[1]);
   3563              listener.lineEnd();
   3564            }
   3565            point0 = point2;
   3566          } else if (notHemisphere && point0 && smallRadius ^ v) {
   3567            var t;
   3568            if (!(c & c0) && (t = intersect(point1, point0, true))) {
   3569              clean = 0;
   3570              if (smallRadius) {
   3571                listener.lineStart();
   3572                listener.point(t[0][0], t[0][1]);
   3573                listener.point(t[1][0], t[1][1]);
   3574                listener.lineEnd();
   3575              } else {
   3576                listener.point(t[1][0], t[1][1]);
   3577                listener.lineEnd();
   3578                listener.lineStart();
   3579                listener.point(t[0][0], t[0][1]);
   3580              }
   3581            }
   3582          }
   3583          if (v && (!point0 || !d3_geo_sphericalEqual(point0, point1))) {
   3584            listener.point(point1[0], point1[1]);
   3585          }
   3586          point0 = point1, v0 = v, c0 = c;
   3587        },
   3588        lineEnd: function() {
   3589          if (v0) listener.lineEnd();
   3590          point0 = null;
   3591        },
   3592        clean: function() {
   3593          return clean | (v00 && v0) << 1;
   3594        }
   3595      };
   3596    }
   3597    function intersect(a, b, two) {
   3598      var pa = d3_geo_cartesian(a), pb = d3_geo_cartesian(b);
   3599      var n1 = [ 1, 0, 0 ], n2 = d3_geo_cartesianCross(pa, pb), n2n2 = d3_geo_cartesianDot(n2, n2), n1n2 = n2[0], determinant = n2n2 - n1n2 * n1n2;
   3600      if (!determinant) return !two && a;
   3601      var c1 = cr * n2n2 / determinant, c2 = -cr * n1n2 / determinant, n1xn2 = d3_geo_cartesianCross(n1, n2), A = d3_geo_cartesianScale(n1, c1), B = d3_geo_cartesianScale(n2, c2);
   3602      d3_geo_cartesianAdd(A, B);
   3603      var u = n1xn2, w = d3_geo_cartesianDot(A, u), uu = d3_geo_cartesianDot(u, u), t2 = w * w - uu * (d3_geo_cartesianDot(A, A) - 1);
   3604      if (t2 < 0) return;
   3605      var t = Math.sqrt(t2), q = d3_geo_cartesianScale(u, (-w - t) / uu);
   3606      d3_geo_cartesianAdd(q, A);
   3607      q = d3_geo_spherical(q);
   3608      if (!two) return q;
   3609      var λ0 = a[0], λ1 = b[0], φ0 = a[1], φ1 = b[1], z;
   3610      if (λ1 < λ0) z = λ0, λ0 = λ1, λ1 = z;
   3611      var δλ = λ1 - λ0, polar = abs(δλ - π) < ε, meridian = polar || δλ < ε;
   3612      if (!polar && φ1 < φ0) z = φ0, φ0 = φ1, φ1 = z;
   3613      if (meridian ? polar ? φ0 + φ1 > 0 ^ q[1] < (abs(q[0] - λ0) < ε ? φ0 : φ1) : φ0 <= q[1] && q[1] <= φ1 : δλ > π ^ (λ0 <= q[0] && q[0] <= λ1)) {
   3614        var q1 = d3_geo_cartesianScale(u, (-w + t) / uu);
   3615        d3_geo_cartesianAdd(q1, A);
   3616        return [ q, d3_geo_spherical(q1) ];
   3617      }
   3618    }
   3619    function code(λ, φ) {
   3620      var r = smallRadius ? radius : π - radius, code = 0;
   3621      if (λ < -r) code |= 1; else if (λ > r) code |= 2;
   3622      if (φ < -r) code |= 4; else if (φ > r) code |= 8;
   3623      return code;
   3624    }
   3625  }
   3626  function d3_geom_clipLine(x0, y0, x1, y1) {
   3627    return function(line) {
   3628      var a = line.a, b = line.b, ax = a.x, ay = a.y, bx = b.x, by = b.y, t0 = 0, t1 = 1, dx = bx - ax, dy = by - ay, r;
   3629      r = x0 - ax;
   3630      if (!dx && r > 0) return;
   3631      r /= dx;
   3632      if (dx < 0) {
   3633        if (r < t0) return;
   3634        if (r < t1) t1 = r;
   3635      } else if (dx > 0) {
   3636        if (r > t1) return;
   3637        if (r > t0) t0 = r;
   3638      }
   3639      r = x1 - ax;
   3640      if (!dx && r < 0) return;
   3641      r /= dx;
   3642      if (dx < 0) {
   3643        if (r > t1) return;
   3644        if (r > t0) t0 = r;
   3645      } else if (dx > 0) {
   3646        if (r < t0) return;
   3647        if (r < t1) t1 = r;
   3648      }
   3649      r = y0 - ay;
   3650      if (!dy && r > 0) return;
   3651      r /= dy;
   3652      if (dy < 0) {
   3653        if (r < t0) return;
   3654        if (r < t1) t1 = r;
   3655      } else if (dy > 0) {
   3656        if (r > t1) return;
   3657        if (r > t0) t0 = r;
   3658      }
   3659      r = y1 - ay;
   3660      if (!dy && r < 0) return;
   3661      r /= dy;
   3662      if (dy < 0) {
   3663        if (r > t1) return;
   3664        if (r > t0) t0 = r;
   3665      } else if (dy > 0) {
   3666        if (r < t0) return;
   3667        if (r < t1) t1 = r;
   3668      }
   3669      if (t0 > 0) line.a = {
   3670        x: ax + t0 * dx,
   3671        y: ay + t0 * dy
   3672      };
   3673      if (t1 < 1) line.b = {
   3674        x: ax + t1 * dx,
   3675        y: ay + t1 * dy
   3676      };
   3677      return line;
   3678    };
   3679  }
   3680  var d3_geo_clipExtentMAX = 1e9;
   3681  d3.geo.clipExtent = function() {
   3682    var x0, y0, x1, y1, stream, clip, clipExtent = {
   3683      stream: function(output) {
   3684        if (stream) stream.valid = false;
   3685        stream = clip(output);
   3686        stream.valid = true;
   3687        return stream;
   3688      },
   3689      extent: function(_) {
   3690        if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
   3691        clip = d3_geo_clipExtent(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]);
   3692        if (stream) stream.valid = false, stream = null;
   3693        return clipExtent;
   3694      }
   3695    };
   3696    return clipExtent.extent([ [ 0, 0 ], [ 960, 500 ] ]);
   3697  };
   3698  function d3_geo_clipExtent(x0, y0, x1, y1) {
   3699    return function(listener) {
   3700      var listener_ = listener, bufferListener = d3_geo_clipBufferListener(), clipLine = d3_geom_clipLine(x0, y0, x1, y1), segments, polygon, ring;
   3701      var clip = {
   3702        point: point,
   3703        lineStart: lineStart,
   3704        lineEnd: lineEnd,
   3705        polygonStart: function() {
   3706          listener = bufferListener;
   3707          segments = [];
   3708          polygon = [];
   3709          clean = true;
   3710        },
   3711        polygonEnd: function() {
   3712          listener = listener_;
   3713          segments = d3.merge(segments);
   3714          var clipStartInside = insidePolygon([ x0, y1 ]), inside = clean && clipStartInside, visible = segments.length;
   3715          if (inside || visible) {
   3716            listener.polygonStart();
   3717            if (inside) {
   3718              listener.lineStart();
   3719              interpolate(null, null, 1, listener);
   3720              listener.lineEnd();
   3721            }
   3722            if (visible) {
   3723              d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener);
   3724            }
   3725            listener.polygonEnd();
   3726          }
   3727          segments = polygon = ring = null;
   3728        }
   3729      };
   3730      function insidePolygon(p) {
   3731        var wn = 0, n = polygon.length, y = p[1];
   3732        for (var i = 0; i < n; ++i) {
   3733          for (var j = 1, v = polygon[i], m = v.length, a = v[0], b; j < m; ++j) {
   3734            b = v[j];
   3735            if (a[1] <= y) {
   3736              if (b[1] > y && d3_cross2d(a, b, p) > 0) ++wn;
   3737            } else {
   3738              if (b[1] <= y && d3_cross2d(a, b, p) < 0) --wn;
   3739            }
   3740            a = b;
   3741          }
   3742        }
   3743        return wn !== 0;
   3744      }
   3745      function interpolate(from, to, direction, listener) {
   3746        var a = 0, a1 = 0;
   3747        if (from == null || (a = corner(from, direction)) !== (a1 = corner(to, direction)) || comparePoints(from, to) < 0 ^ direction > 0) {
   3748          do {
   3749            listener.point(a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0);
   3750          } while ((a = (a + direction + 4) % 4) !== a1);
   3751        } else {
   3752          listener.point(to[0], to[1]);
   3753        }
   3754      }
   3755      function pointVisible(x, y) {
   3756        return x0 <= x && x <= x1 && y0 <= y && y <= y1;
   3757      }
   3758      function point(x, y) {
   3759        if (pointVisible(x, y)) listener.point(x, y);
   3760      }
   3761      var x__, y__, v__, x_, y_, v_, first, clean;
   3762      function lineStart() {
   3763        clip.point = linePoint;
   3764        if (polygon) polygon.push(ring = []);
   3765        first = true;
   3766        v_ = false;
   3767        x_ = y_ = NaN;
   3768      }
   3769      function lineEnd() {
   3770        if (segments) {
   3771          linePoint(x__, y__);
   3772          if (v__ && v_) bufferListener.rejoin();
   3773          segments.push(bufferListener.buffer());
   3774        }
   3775        clip.point = point;
   3776        if (v_) listener.lineEnd();
   3777      }
   3778      function linePoint(x, y) {
   3779        x = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, x));
   3780        y = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, y));
   3781        var v = pointVisible(x, y);
   3782        if (polygon) ring.push([ x, y ]);
   3783        if (first) {
   3784          x__ = x, y__ = y, v__ = v;
   3785          first = false;
   3786          if (v) {
   3787            listener.lineStart();
   3788            listener.point(x, y);
   3789          }
   3790        } else {
   3791          if (v && v_) listener.point(x, y); else {
   3792            var l = {
   3793              a: {
   3794                x: x_,
   3795                y: y_
   3796              },
   3797              b: {
   3798                x: x,
   3799                y: y
   3800              }
   3801            };
   3802            if (clipLine(l)) {
   3803              if (!v_) {
   3804                listener.lineStart();
   3805                listener.point(l.a.x, l.a.y);
   3806              }
   3807              listener.point(l.b.x, l.b.y);
   3808              if (!v) listener.lineEnd();
   3809              clean = false;
   3810            } else if (v) {
   3811              listener.lineStart();
   3812              listener.point(x, y);
   3813              clean = false;
   3814            }
   3815          }
   3816        }
   3817        x_ = x, y_ = y, v_ = v;
   3818      }
   3819      return clip;
   3820    };
   3821    function corner(p, direction) {
   3822      return abs(p[0] - x0) < ε ? direction > 0 ? 0 : 3 : abs(p[0] - x1) < ε ? direction > 0 ? 2 : 1 : abs(p[1] - y0) < ε ? direction > 0 ? 1 : 0 : direction > 0 ? 3 : 2;
   3823    }
   3824    function compare(a, b) {
   3825      return comparePoints(a.x, b.x);
   3826    }
   3827    function comparePoints(a, b) {
   3828      var ca = corner(a, 1), cb = corner(b, 1);
   3829      return ca !== cb ? ca - cb : ca === 0 ? b[1] - a[1] : ca === 1 ? a[0] - b[0] : ca === 2 ? a[1] - b[1] : b[0] - a[0];
   3830    }
   3831  }
   3832  function d3_geo_conic(projectAt) {
   3833    var φ0 = 0, φ1 = π / 3, m = d3_geo_projectionMutator(projectAt), p = m(φ0, φ1);
   3834    p.parallels = function(_) {
   3835      if (!arguments.length) return [ φ0 / π * 180, φ1 / π * 180 ];
   3836      return m(φ0 = _[0] * π / 180, φ1 = _[1] * π / 180);
   3837    };
   3838    return p;
   3839  }
   3840  function d3_geo_conicEqualArea(φ0, φ1) {
   3841    var sinφ0 = Math.sin(φ0), n = (sinφ0 + Math.sin(φ1)) / 2, C = 1 + sinφ0 * (2 * n - sinφ0), ρ0 = Math.sqrt(C) / n;
   3842    function forward(λ, φ) {
   3843      var ρ = Math.sqrt(C - 2 * n * Math.sin(φ)) / n;
   3844      return [ ρ * Math.sin(λ *= n), ρ0 - ρ * Math.cos(λ) ];
   3845    }
   3846    forward.invert = function(x, y) {
   3847      var ρ0_y = ρ0 - y;
   3848      return [ Math.atan2(x, ρ0_y) / n, d3_asin((C - (x * x + ρ0_y * ρ0_y) * n * n) / (2 * n)) ];
   3849    };
   3850    return forward;
   3851  }
   3852  (d3.geo.conicEqualArea = function() {
   3853    return d3_geo_conic(d3_geo_conicEqualArea);
   3854  }).raw = d3_geo_conicEqualArea;
   3855  d3.geo.albers = function() {
   3856    return d3.geo.conicEqualArea().rotate([ 96, 0 ]).center([ -.6, 38.7 ]).parallels([ 29.5, 45.5 ]).scale(1070);
   3857  };
   3858  d3.geo.albersUsa = function() {
   3859    var lower48 = d3.geo.albers();
   3860    var alaska = d3.geo.conicEqualArea().rotate([ 154, 0 ]).center([ -2, 58.5 ]).parallels([ 55, 65 ]);
   3861    var hawaii = d3.geo.conicEqualArea().rotate([ 157, 0 ]).center([ -3, 19.9 ]).parallels([ 8, 18 ]);
   3862    var point, pointStream = {
   3863      point: function(x, y) {
   3864        point = [ x, y ];
   3865      }
   3866    }, lower48Point, alaskaPoint, hawaiiPoint;
   3867    function albersUsa(coordinates) {
   3868      var x = coordinates[0], y = coordinates[1];
   3869      point = null;
   3870      (lower48Point(x, y), point) || (alaskaPoint(x, y), point) || hawaiiPoint(x, y);
   3871      return point;
   3872    }
   3873    albersUsa.invert = function(coordinates) {
   3874      var k = lower48.scale(), t = lower48.translate(), x = (coordinates[0] - t[0]) / k, y = (coordinates[1] - t[1]) / k;
   3875      return (y >= .12 && y < .234 && x >= -.425 && x < -.214 ? alaska : y >= .166 && y < .234 && x >= -.214 && x < -.115 ? hawaii : lower48).invert(coordinates);
   3876    };
   3877    albersUsa.stream = function(stream) {
   3878      var lower48Stream = lower48.stream(stream), alaskaStream = alaska.stream(stream), hawaiiStream = hawaii.stream(stream);
   3879      return {
   3880        point: function(x, y) {
   3881          lower48Stream.point(x, y);
   3882          alaskaStream.point(x, y);
   3883          hawaiiStream.point(x, y);
   3884        },
   3885        sphere: function() {
   3886          lower48Stream.sphere();
   3887          alaskaStream.sphere();
   3888          hawaiiStream.sphere();
   3889        },
   3890        lineStart: function() {
   3891          lower48Stream.lineStart();
   3892          alaskaStream.lineStart();
   3893          hawaiiStream.lineStart();
   3894        },
   3895        lineEnd: function() {
   3896          lower48Stream.lineEnd();
   3897          alaskaStream.lineEnd();
   3898          hawaiiStream.lineEnd();
   3899        },
   3900        polygonStart: function() {
   3901          lower48Stream.polygonStart();
   3902          alaskaStream.polygonStart();
   3903          hawaiiStream.polygonStart();
   3904        },
   3905        polygonEnd: function() {
   3906          lower48Stream.polygonEnd();
   3907          alaskaStream.polygonEnd();
   3908          hawaiiStream.polygonEnd();
   3909        }
   3910      };
   3911    };
   3912    albersUsa.precision = function(_) {
   3913      if (!arguments.length) return lower48.precision();
   3914      lower48.precision(_);
   3915      alaska.precision(_);
   3916      hawaii.precision(_);
   3917      return albersUsa;
   3918    };
   3919    albersUsa.scale = function(_) {
   3920      if (!arguments.length) return lower48.scale();
   3921      lower48.scale(_);
   3922      alaska.scale(_ * .35);
   3923      hawaii.scale(_);
   3924      return albersUsa.translate(lower48.translate());
   3925    };
   3926    albersUsa.translate = function(_) {
   3927      if (!arguments.length) return lower48.translate();
   3928      var k = lower48.scale(), x = +_[0], y = +_[1];
   3929      lower48Point = lower48.translate(_).clipExtent([ [ x - .455 * k, y - .238 * k ], [ x + .455 * k, y + .238 * k ] ]).stream(pointStream).point;
   3930      alaskaPoint = alaska.translate([ x - .307 * k, y + .201 * k ]).clipExtent([ [ x - .425 * k + ε, y + .12 * k + ε ], [ x - .214 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
   3931      hawaiiPoint = hawaii.translate([ x - .205 * k, y + .212 * k ]).clipExtent([ [ x - .214 * k + ε, y + .166 * k + ε ], [ x - .115 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
   3932      return albersUsa;
   3933    };
   3934    return albersUsa.scale(1070);
   3935  };
   3936  var d3_geo_pathAreaSum, d3_geo_pathAreaPolygon, d3_geo_pathArea = {
   3937    point: d3_noop,
   3938    lineStart: d3_noop,
   3939    lineEnd: d3_noop,
   3940    polygonStart: function() {
   3941      d3_geo_pathAreaPolygon = 0;
   3942      d3_geo_pathArea.lineStart = d3_geo_pathAreaRingStart;
   3943    },
   3944    polygonEnd: function() {
   3945      d3_geo_pathArea.lineStart = d3_geo_pathArea.lineEnd = d3_geo_pathArea.point = d3_noop;
   3946      d3_geo_pathAreaSum += abs(d3_geo_pathAreaPolygon / 2);
   3947    }
   3948  };
   3949  function d3_geo_pathAreaRingStart() {
   3950    var x00, y00, x0, y0;
   3951    d3_geo_pathArea.point = function(x, y) {
   3952      d3_geo_pathArea.point = nextPoint;
   3953      x00 = x0 = x, y00 = y0 = y;
   3954    };
   3955    function nextPoint(x, y) {
   3956      d3_geo_pathAreaPolygon += y0 * x - x0 * y;
   3957      x0 = x, y0 = y;
   3958    }
   3959    d3_geo_pathArea.lineEnd = function() {
   3960      nextPoint(x00, y00);
   3961    };
   3962  }
   3963  var d3_geo_pathBoundsX0, d3_geo_pathBoundsY0, d3_geo_pathBoundsX1, d3_geo_pathBoundsY1;
   3964  var d3_geo_pathBounds = {
   3965    point: d3_geo_pathBoundsPoint,
   3966    lineStart: d3_noop,
   3967    lineEnd: d3_noop,
   3968    polygonStart: d3_noop,
   3969    polygonEnd: d3_noop
   3970  };
   3971  function d3_geo_pathBoundsPoint(x, y) {
   3972    if (x < d3_geo_pathBoundsX0) d3_geo_pathBoundsX0 = x;
   3973    if (x > d3_geo_pathBoundsX1) d3_geo_pathBoundsX1 = x;
   3974    if (y < d3_geo_pathBoundsY0) d3_geo_pathBoundsY0 = y;
   3975    if (y > d3_geo_pathBoundsY1) d3_geo_pathBoundsY1 = y;
   3976  }
   3977  function d3_geo_pathBuffer() {
   3978    var pointCircle = d3_geo_pathBufferCircle(4.5), buffer = [];
   3979    var stream = {
   3980      point: point,
   3981      lineStart: function() {
   3982        stream.point = pointLineStart;
   3983      },
   3984      lineEnd: lineEnd,
   3985      polygonStart: function() {
   3986        stream.lineEnd = lineEndPolygon;
   3987      },
   3988      polygonEnd: function() {
   3989        stream.lineEnd = lineEnd;
   3990        stream.point = point;
   3991      },
   3992      pointRadius: function(_) {
   3993        pointCircle = d3_geo_pathBufferCircle(_);
   3994        return stream;
   3995      },
   3996      result: function() {
   3997        if (buffer.length) {
   3998          var result = buffer.join("");
   3999          buffer = [];
   4000          return result;
   4001        }
   4002      }
   4003    };
   4004    function point(x, y) {
   4005      buffer.push("M", x, ",", y, pointCircle);
   4006    }
   4007    function pointLineStart(x, y) {
   4008      buffer.push("M", x, ",", y);
   4009      stream.point = pointLine;
   4010    }
   4011    function pointLine(x, y) {
   4012      buffer.push("L", x, ",", y);
   4013    }
   4014    function lineEnd() {
   4015      stream.point = point;
   4016    }
   4017    function lineEndPolygon() {
   4018      buffer.push("Z");
   4019    }
   4020    return stream;
   4021  }
   4022  function d3_geo_pathBufferCircle(radius) {
   4023    return "m0," + radius + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius + "z";
   4024  }
   4025  var d3_geo_pathCentroid = {
   4026    point: d3_geo_pathCentroidPoint,
   4027    lineStart: d3_geo_pathCentroidLineStart,
   4028    lineEnd: d3_geo_pathCentroidLineEnd,
   4029    polygonStart: function() {
   4030      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidRingStart;
   4031    },
   4032    polygonEnd: function() {
   4033      d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
   4034      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidLineStart;
   4035      d3_geo_pathCentroid.lineEnd = d3_geo_pathCentroidLineEnd;
   4036    }
   4037  };
   4038  function d3_geo_pathCentroidPoint(x, y) {
   4039    d3_geo_centroidX0 += x;
   4040    d3_geo_centroidY0 += y;
   4041    ++d3_geo_centroidZ0;
   4042  }
   4043  function d3_geo_pathCentroidLineStart() {
   4044    var x0, y0;
   4045    d3_geo_pathCentroid.point = function(x, y) {
   4046      d3_geo_pathCentroid.point = nextPoint;
   4047      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
   4048    };
   4049    function nextPoint(x, y) {
   4050      var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
   4051      d3_geo_centroidX1 += z * (x0 + x) / 2;
   4052      d3_geo_centroidY1 += z * (y0 + y) / 2;
   4053      d3_geo_centroidZ1 += z;
   4054      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
   4055    }
   4056  }
   4057  function d3_geo_pathCentroidLineEnd() {
   4058    d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
   4059  }
   4060  function d3_geo_pathCentroidRingStart() {
   4061    var x00, y00, x0, y0;
   4062    d3_geo_pathCentroid.point = function(x, y) {
   4063      d3_geo_pathCentroid.point = nextPoint;
   4064      d3_geo_pathCentroidPoint(x00 = x0 = x, y00 = y0 = y);
   4065    };
   4066    function nextPoint(x, y) {
   4067      var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
   4068      d3_geo_centroidX1 += z * (x0 + x) / 2;
   4069      d3_geo_centroidY1 += z * (y0 + y) / 2;
   4070      d3_geo_centroidZ1 += z;
   4071      z = y0 * x - x0 * y;
   4072      d3_geo_centroidX2 += z * (x0 + x);
   4073      d3_geo_centroidY2 += z * (y0 + y);
   4074      d3_geo_centroidZ2 += z * 3;
   4075      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
   4076    }
   4077    d3_geo_pathCentroid.lineEnd = function() {
   4078      nextPoint(x00, y00);
   4079    };
   4080  }
   4081  function d3_geo_pathContext(context) {
   4082    var pointRadius = 4.5;
   4083    var stream = {
   4084      point: point,
   4085      lineStart: function() {
   4086        stream.point = pointLineStart;
   4087      },
   4088      lineEnd: lineEnd,
   4089      polygonStart: function() {
   4090        stream.lineEnd = lineEndPolygon;
   4091      },
   4092      polygonEnd: function() {
   4093        stream.lineEnd = lineEnd;
   4094        stream.point = point;
   4095      },
   4096      pointRadius: function(_) {
   4097        pointRadius = _;
   4098        return stream;
   4099      },
   4100      result: d3_noop
   4101    };
   4102    function point(x, y) {
   4103      context.moveTo(x + pointRadius, y);
   4104      context.arc(x, y, pointRadius, 0, τ);
   4105    }
   4106    function pointLineStart(x, y) {
   4107      context.moveTo(x, y);
   4108      stream.point = pointLine;
   4109    }
   4110    function pointLine(x, y) {
   4111      context.lineTo(x, y);
   4112    }
   4113    function lineEnd() {
   4114      stream.point = point;
   4115    }
   4116    function lineEndPolygon() {
   4117      context.closePath();
   4118    }
   4119    return stream;
   4120  }
   4121  function d3_geo_resample(project) {
   4122    var δ2 = .5, cosMinDistance = Math.cos(30 * d3_radians), maxDepth = 16;
   4123    function resample(stream) {
   4124      return (maxDepth ? resampleRecursive : resampleNone)(stream);
   4125    }
   4126    function resampleNone(stream) {
   4127      return d3_geo_transformPoint(stream, function(x, y) {
   4128        x = project(x, y);
   4129        stream.point(x[0], x[1]);
   4130      });
   4131    }
   4132    function resampleRecursive(stream) {
   4133      var λ00, φ00, x00, y00, a00, b00, c00, λ0, x0, y0, a0, b0, c0;
   4134      var resample = {
   4135        point: point,
   4136        lineStart: lineStart,
   4137        lineEnd: lineEnd,
   4138        polygonStart: function() {
   4139          stream.polygonStart();
   4140          resample.lineStart = ringStart;
   4141        },
   4142        polygonEnd: function() {
   4143          stream.polygonEnd();
   4144          resample.lineStart = lineStart;
   4145        }
   4146      };
   4147      function point(x, y) {
   4148        x = project(x, y);
   4149        stream.point(x[0], x[1]);
   4150      }
   4151      function lineStart() {
   4152        x0 = NaN;
   4153        resample.point = linePoint;
   4154        stream.lineStart();
   4155      }
   4156      function linePoint(λ, φ) {
   4157        var c = d3_geo_cartesian([ λ, φ ]), p = project(λ, φ);
   4158        resampleLineTo(x0, y0, λ0, a0, b0, c0, x0 = p[0], y0 = p[1], λ0 = λ, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream);
   4159        stream.point(x0, y0);
   4160      }
   4161      function lineEnd() {
   4162        resample.point = point;
   4163        stream.lineEnd();
   4164      }
   4165      function ringStart() {
   4166        lineStart();
   4167        resample.point = ringPoint;
   4168        resample.lineEnd = ringEnd;
   4169      }
   4170      function ringPoint(λ, φ) {
   4171        linePoint(λ00 = λ, φ00 = φ), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0;
   4172        resample.point = linePoint;
   4173      }
   4174      function ringEnd() {
   4175        resampleLineTo(x0, y0, λ0, a0, b0, c0, x00, y00, λ00, a00, b00, c00, maxDepth, stream);
   4176        resample.lineEnd = lineEnd;
   4177        lineEnd();
   4178      }
   4179      return resample;
   4180    }
   4181    function resampleLineTo(x0, y0, λ0, a0, b0, c0, x1, y1, λ1, a1, b1, c1, depth, stream) {
   4182      var dx = x1 - x0, dy = y1 - y0, d2 = dx * dx + dy * dy;
   4183      if (d2 > 4 * δ2 && depth--) {
   4184        var a = a0 + a1, b = b0 + b1, c = c0 + c1, m = Math.sqrt(a * a + b * b + c * c), φ2 = Math.asin(c /= m), λ2 = abs(abs(c) - 1) < ε || abs(λ0 - λ1) < ε ? (λ0 + λ1) / 2 : Math.atan2(b, a), p = project(λ2, φ2), x2 = p[0], y2 = p[1], dx2 = x2 - x0, dy2 = y2 - y0, dz = dy * dx2 - dx * dy2;
   4185        if (dz * dz / d2 > δ2 || abs((dx * dx2 + dy * dy2) / d2 - .5) > .3 || a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) {
   4186          resampleLineTo(x0, y0, λ0, a0, b0, c0, x2, y2, λ2, a /= m, b /= m, c, depth, stream);
   4187          stream.point(x2, y2);
   4188          resampleLineTo(x2, y2, λ2, a, b, c, x1, y1, λ1, a1, b1, c1, depth, stream);
   4189        }
   4190      }
   4191    }
   4192    resample.precision = function(_) {
   4193      if (!arguments.length) return Math.sqrt(δ2);
   4194      maxDepth = (δ2 = _ * _) > 0 && 16;
   4195      return resample;
   4196    };
   4197    return resample;
   4198  }
   4199  d3.geo.path = function() {
   4200    var pointRadius = 4.5, projection, context, projectStream, contextStream, cacheStream;
   4201    function path(object) {
   4202      if (object) {
   4203        if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments));
   4204        if (!cacheStream || !cacheStream.valid) cacheStream = projectStream(contextStream);
   4205        d3.geo.stream(object, cacheStream);
   4206      }
   4207      return contextStream.result();
   4208    }
   4209    path.area = function(object) {
   4210      d3_geo_pathAreaSum = 0;
   4211      d3.geo.stream(object, projectStream(d3_geo_pathArea));
   4212      return d3_geo_pathAreaSum;
   4213    };
   4214    path.centroid = function(object) {
   4215      d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
   4216      d3.geo.stream(object, projectStream(d3_geo_pathCentroid));
   4217      return d3_geo_centroidZ2 ? [ d3_geo_centroidX2 / d3_geo_centroidZ2, d3_geo_centroidY2 / d3_geo_centroidZ2 ] : d3_geo_centroidZ1 ? [ d3_geo_centroidX1 / d3_geo_centroidZ1, d3_geo_centroidY1 / d3_geo_centroidZ1 ] : d3_geo_centroidZ0 ? [ d3_geo_centroidX0 / d3_geo_centroidZ0, d3_geo_centroidY0 / d3_geo_centroidZ0 ] : [ NaN, NaN ];
   4218    };
   4219    path.bounds = function(object) {
   4220      d3_geo_pathBoundsX1 = d3_geo_pathBoundsY1 = -(d3_geo_pathBoundsX0 = d3_geo_pathBoundsY0 = Infinity);
   4221      d3.geo.stream(object, projectStream(d3_geo_pathBounds));
   4222      return [ [ d3_geo_pathBoundsX0, d3_geo_pathBoundsY0 ], [ d3_geo_pathBoundsX1, d3_geo_pathBoundsY1 ] ];
   4223    };
   4224    path.projection = function(_) {
   4225      if (!arguments.length) return projection;
   4226      projectStream = (projection = _) ? _.stream || d3_geo_pathProjectStream(_) : d3_identity;
   4227      return reset();
   4228    };
   4229    path.context = function(_) {
   4230      if (!arguments.length) return context;
   4231      contextStream = (context = _) == null ? new d3_geo_pathBuffer() : new d3_geo_pathContext(_);
   4232      if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius);
   4233      return reset();
   4234    };
   4235    path.pointRadius = function(_) {
   4236      if (!arguments.length) return pointRadius;
   4237      pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_);
   4238      return path;
   4239    };
   4240    function reset() {
   4241      cacheStream = null;
   4242      return path;
   4243    }
   4244    return path.projection(d3.geo.albersUsa()).context(null);
   4245  };
   4246  function d3_geo_pathProjectStream(project) {
   4247    var resample = d3_geo_resample(function(x, y) {
   4248      return project([ x * d3_degrees, y * d3_degrees ]);
   4249    });
   4250    return function(stream) {
   4251      return d3_geo_projectionRadians(resample(stream));
   4252    };
   4253  }
   4254  d3.geo.transform = function(methods) {
   4255    return {
   4256      stream: function(stream) {
   4257        var transform = new d3_geo_transform(stream);
   4258        for (var k in methods) transform[k] = methods[k];
   4259        return transform;
   4260      }
   4261    };
   4262  };
   4263  function d3_geo_transform(stream) {
   4264    this.stream = stream;
   4265  }
   4266  d3_geo_transform.prototype = {
   4267    point: function(x, y) {
   4268      this.stream.point(x, y);
   4269    },
   4270    sphere: function() {
   4271      this.stream.sphere();
   4272    },
   4273    lineStart: function() {
   4274      this.stream.lineStart();
   4275    },
   4276    lineEnd: function() {
   4277      this.stream.lineEnd();
   4278    },
   4279    polygonStart: function() {
   4280      this.stream.polygonStart();
   4281    },
   4282    polygonEnd: function() {
   4283      this.stream.polygonEnd();
   4284    }
   4285  };
   4286  function d3_geo_transformPoint(stream, point) {
   4287    return {
   4288      point: point,
   4289      sphere: function() {
   4290        stream.sphere();
   4291      },
   4292      lineStart: function() {
   4293        stream.lineStart();
   4294      },
   4295      lineEnd: function() {
   4296        stream.lineEnd();
   4297      },
   4298      polygonStart: function() {
   4299        stream.polygonStart();
   4300      },
   4301      polygonEnd: function() {
   4302        stream.polygonEnd();
   4303      }
   4304    };
   4305  }
   4306  d3.geo.projection = d3_geo_projection;
   4307  d3.geo.projectionMutator = d3_geo_projectionMutator;
   4308  function d3_geo_projection(project) {
   4309    return d3_geo_projectionMutator(function() {
   4310      return project;
   4311    })();
   4312  }
   4313  function d3_geo_projectionMutator(projectAt) {
   4314    var project, rotate, projectRotate, projectResample = d3_geo_resample(function(x, y) {
   4315      x = project(x, y);
   4316      return [ x[0] * k + δx, δy - x[1] * k ];
   4317    }), k = 150, x = 480, y = 250, λ = 0, φ = 0, δλ = 0, δφ = 0, δγ = 0, δx, δy, preclip = d3_geo_clipAntimeridian, postclip = d3_identity, clipAngle = null, clipExtent = null, stream;
   4318    function projection(point) {
   4319      point = projectRotate(point[0] * d3_radians, point[1] * d3_radians);
   4320      return [ point[0] * k + δx, δy - point[1] * k ];
   4321    }
   4322    function invert(point) {
   4323      point = projectRotate.invert((point[0] - δx) / k, (δy - point[1]) / k);
   4324      return point && [ point[0] * d3_degrees, point[1] * d3_degrees ];
   4325    }
   4326    projection.stream = function(output) {
   4327      if (stream) stream.valid = false;
   4328      stream = d3_geo_projectionRadians(preclip(rotate, projectResample(postclip(output))));
   4329      stream.valid = true;
   4330      return stream;
   4331    };
   4332    projection.clipAngle = function(_) {
   4333      if (!arguments.length) return clipAngle;
   4334      preclip = _ == null ? (clipAngle = _, d3_geo_clipAntimeridian) : d3_geo_clipCircle((clipAngle = +_) * d3_radians);
   4335      return invalidate();
   4336    };
   4337    projection.clipExtent = function(_) {
   4338      if (!arguments.length) return clipExtent;
   4339      clipExtent = _;
   4340      postclip = _ ? d3_geo_clipExtent(_[0][0], _[0][1], _[1][0], _[1][1]) : d3_identity;
   4341      return invalidate();
   4342    };
   4343    projection.scale = function(_) {
   4344      if (!arguments.length) return k;
   4345      k = +_;
   4346      return reset();
   4347    };
   4348    projection.translate = function(_) {
   4349      if (!arguments.length) return [ x, y ];
   4350      x = +_[0];
   4351      y = +_[1];
   4352      return reset();
   4353    };
   4354    projection.center = function(_) {
   4355      if (!arguments.length) return [ λ * d3_degrees, φ * d3_degrees ];
   4356      λ = _[0] % 360 * d3_radians;
   4357      φ = _[1] % 360 * d3_radians;
   4358      return reset();
   4359    };
   4360    projection.rotate = function(_) {
   4361      if (!arguments.length) return [ δλ * d3_degrees, δφ * d3_degrees, δγ * d3_degrees ];
   4362      δλ = _[0] % 360 * d3_radians;
   4363      δφ = _[1] % 360 * d3_radians;
   4364      δγ = _.length > 2 ? _[2] % 360 * d3_radians : 0;
   4365      return reset();
   4366    };
   4367    d3.rebind(projection, projectResample, "precision");
   4368    function reset() {
   4369      projectRotate = d3_geo_compose(rotate = d3_geo_rotation(δλ, δφ, δγ), project);
   4370      var center = project(λ, φ);
   4371      δx = x - center[0] * k;
   4372      δy = y + center[1] * k;
   4373      return invalidate();
   4374    }
   4375    function invalidate() {
   4376      if (stream) stream.valid = false, stream = null;
   4377      return projection;
   4378    }
   4379    return function() {
   4380      project = projectAt.apply(this, arguments);
   4381      projection.invert = project.invert && invert;
   4382      return reset();
   4383    };
   4384  }
   4385  function d3_geo_projectionRadians(stream) {
   4386    return d3_geo_transformPoint(stream, function(x, y) {
   4387      stream.point(x * d3_radians, y * d3_radians);
   4388    });
   4389  }
   4390  function d3_geo_equirectangular(λ, φ) {
   4391    return [ λ, φ ];
   4392  }
   4393  (d3.geo.equirectangular = function() {
   4394    return d3_geo_projection(d3_geo_equirectangular);
   4395  }).raw = d3_geo_equirectangular.invert = d3_geo_equirectangular;
   4396  d3.geo.rotation = function(rotate) {
   4397    rotate = d3_geo_rotation(rotate[0] % 360 * d3_radians, rotate[1] * d3_radians, rotate.length > 2 ? rotate[2] * d3_radians : 0);
   4398    function forward(coordinates) {
   4399      coordinates = rotate(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
   4400      return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
   4401    }
   4402    forward.invert = function(coordinates) {
   4403      coordinates = rotate.invert(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
   4404      return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
   4405    };
   4406    return forward;
   4407  };
   4408  function d3_geo_identityRotation(λ, φ) {
   4409    return [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
   4410  }
   4411  d3_geo_identityRotation.invert = d3_geo_equirectangular;
   4412  function d3_geo_rotation(δλ, δφ, δγ) {
   4413    return δλ ? δφ || δγ ? d3_geo_compose(d3_geo_rotationλ(δλ), d3_geo_rotationφγ(δφ, δγ)) : d3_geo_rotationλ(δλ) : δφ || δγ ? d3_geo_rotationφγ(δφ, δγ) : d3_geo_identityRotation;
   4414  }
   4415  function d3_geo_forwardRotationλ(δλ) {
   4416    return function(λ, φ) {
   4417      return λ += δλ, [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
   4418    };
   4419  }
   4420  function d3_geo_rotationλ(δλ) {
   4421    var rotation = d3_geo_forwardRotationλ(δλ);
   4422    rotation.invert = d3_geo_forwardRotationλ(-δλ);
   4423    return rotation;
   4424  }
   4425  function d3_geo_rotationφγ(δφ, δγ) {
   4426    var cosδφ = Math.cos(δφ), sinδφ = Math.sin(δφ), cosδγ = Math.cos(δγ), sinδγ = Math.sin(δγ);
   4427    function rotation(λ, φ) {
   4428      var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδφ + x * sinδφ;
   4429      return [ Math.atan2(y * cosδγ - k * sinδγ, x * cosδφ - z * sinδφ), d3_asin(k * cosδγ + y * sinδγ) ];
   4430    }
   4431    rotation.invert = function(λ, φ) {
   4432      var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδγ - y * sinδγ;
   4433      return [ Math.atan2(y * cosδγ + z * sinδγ, x * cosδφ + k * sinδφ), d3_asin(k * cosδφ - x * sinδφ) ];
   4434    };
   4435    return rotation;
   4436  }
   4437  d3.geo.circle = function() {
   4438    var origin = [ 0, 0 ], angle, precision = 6, interpolate;
   4439    function circle() {
   4440      var center = typeof origin === "function" ? origin.apply(this, arguments) : origin, rotate = d3_geo_rotation(-center[0] * d3_radians, -center[1] * d3_radians, 0).invert, ring = [];
   4441      interpolate(null, null, 1, {
   4442        point: function(x, y) {
   4443          ring.push(x = rotate(x, y));
   4444          x[0] *= d3_degrees, x[1] *= d3_degrees;
   4445        }
   4446      });
   4447      return {
   4448        type: "Polygon",
   4449        coordinates: [ ring ]
   4450      };
   4451    }
   4452    circle.origin = function(x) {
   4453      if (!arguments.length) return origin;
   4454      origin = x;
   4455      return circle;
   4456    };
   4457    circle.angle = function(x) {
   4458      if (!arguments.length) return angle;
   4459      interpolate = d3_geo_circleInterpolate((angle = +x) * d3_radians, precision * d3_radians);
   4460      return circle;
   4461    };
   4462    circle.precision = function(_) {
   4463      if (!arguments.length) return precision;
   4464      interpolate = d3_geo_circleInterpolate(angle * d3_radians, (precision = +_) * d3_radians);
   4465      return circle;
   4466    };
   4467    return circle.angle(90);
   4468  };
   4469  function d3_geo_circleInterpolate(radius, precision) {
   4470    var cr = Math.cos(radius), sr = Math.sin(radius);
   4471    return function(from, to, direction, listener) {
   4472      var step = direction * precision;
   4473      if (from != null) {
   4474        from = d3_geo_circleAngle(cr, from);
   4475        to = d3_geo_circleAngle(cr, to);
   4476        if (direction > 0 ? from < to : from > to) from += direction * τ;
   4477      } else {
   4478        from = radius + direction * τ;
   4479        to = radius - .5 * step;
   4480      }
   4481      for (var point, t = from; direction > 0 ? t > to : t < to; t -= step) {
   4482        listener.point((point = d3_geo_spherical([ cr, -sr * Math.cos(t), -sr * Math.sin(t) ]))[0], point[1]);
   4483      }
   4484    };
   4485  }
   4486  function d3_geo_circleAngle(cr, point) {
   4487    var a = d3_geo_cartesian(point);
   4488    a[0] -= cr;
   4489    d3_geo_cartesianNormalize(a);
   4490    var angle = d3_acos(-a[1]);
   4491    return ((-a[2] < 0 ? -angle : angle) + 2 * Math.PI - ε) % (2 * Math.PI);
   4492  }
   4493  d3.geo.distance = function(a, b) {
   4494    var Δλ = (b[0] - a[0]) * d3_radians, φ0 = a[1] * d3_radians, φ1 = b[1] * d3_radians, sinΔλ = Math.sin(Δλ), cosΔλ = Math.cos(Δλ), sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), sinφ1 = Math.sin(φ1), cosφ1 = Math.cos(φ1), t;
   4495    return Math.atan2(Math.sqrt((t = cosφ1 * sinΔλ) * t + (t = cosφ0 * sinφ1 - sinφ0 * cosφ1 * cosΔλ) * t), sinφ0 * sinφ1 + cosφ0 * cosφ1 * cosΔλ);
   4496  };
   4497  d3.geo.graticule = function() {
   4498    var x1, x0, X1, X0, y1, y0, Y1, Y0, dx = 10, dy = dx, DX = 90, DY = 360, x, y, X, Y, precision = 2.5;
   4499    function graticule() {
   4500      return {
   4501        type: "MultiLineString",
   4502        coordinates: lines()
   4503      };
   4504    }
   4505    function lines() {
   4506      return d3.range(Math.ceil(X0 / DX) * DX, X1, DX).map(X).concat(d3.range(Math.ceil(Y0 / DY) * DY, Y1, DY).map(Y)).concat(d3.range(Math.ceil(x0 / dx) * dx, x1, dx).filter(function(x) {
   4507        return abs(x % DX) > ε;
   4508      }).map(x)).concat(d3.range(Math.ceil(y0 / dy) * dy, y1, dy).filter(function(y) {
   4509        return abs(y % DY) > ε;
   4510      }).map(y));
   4511    }
   4512    graticule.lines = function() {
   4513      return lines().map(function(coordinates) {
   4514        return {
   4515          type: "LineString",
   4516          coordinates: coordinates
   4517        };
   4518      });
   4519    };
   4520    graticule.outline = function() {
   4521      return {
   4522        type: "Polygon",
   4523        coordinates: [ X(X0).concat(Y(Y1).slice(1), X(X1).reverse().slice(1), Y(Y0).reverse().slice(1)) ]
   4524      };
   4525    };
   4526    graticule.extent = function(_) {
   4527      if (!arguments.length) return graticule.minorExtent();
   4528      return graticule.majorExtent(_).minorExtent(_);
   4529    };
   4530    graticule.majorExtent = function(_) {
   4531      if (!arguments.length) return [ [ X0, Y0 ], [ X1, Y1 ] ];
   4532      X0 = +_[0][0], X1 = +_[1][0];
   4533      Y0 = +_[0][1], Y1 = +_[1][1];
   4534      if (X0 > X1) _ = X0, X0 = X1, X1 = _;
   4535      if (Y0 > Y1) _ = Y0, Y0 = Y1, Y1 = _;
   4536      return graticule.precision(precision);
   4537    };
   4538    graticule.minorExtent = function(_) {
   4539      if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
   4540      x0 = +_[0][0], x1 = +_[1][0];
   4541      y0 = +_[0][1], y1 = +_[1][1];
   4542      if (x0 > x1) _ = x0, x0 = x1, x1 = _;
   4543      if (y0 > y1) _ = y0, y0 = y1, y1 = _;
   4544      return graticule.precision(precision);
   4545    };
   4546    graticule.step = function(_) {
   4547      if (!arguments.length) return graticule.minorStep();
   4548      return graticule.majorStep(_).minorStep(_);
   4549    };
   4550    graticule.majorStep = function(_) {
   4551      if (!arguments.length) return [ DX, DY ];
   4552      DX = +_[0], DY = +_[1];
   4553      return graticule;
   4554    };
   4555    graticule.minorStep = function(_) {
   4556      if (!arguments.length) return [ dx, dy ];
   4557      dx = +_[0], dy = +_[1];
   4558      return graticule;
   4559    };
   4560    graticule.precision = function(_) {
   4561      if (!arguments.length) return precision;
   4562      precision = +_;
   4563      x = d3_geo_graticuleX(y0, y1, 90);
   4564      y = d3_geo_graticuleY(x0, x1, precision);
   4565      X = d3_geo_graticuleX(Y0, Y1, 90);
   4566      Y = d3_geo_graticuleY(X0, X1, precision);
   4567      return graticule;
   4568    };
   4569    return graticule.majorExtent([ [ -180, -90 + ε ], [ 180, 90 - ε ] ]).minorExtent([ [ -180, -80 - ε ], [ 180, 80 + ε ] ]);
   4570  };
   4571  function d3_geo_graticuleX(y0, y1, dy) {
   4572    var y = d3.range(y0, y1 - ε, dy).concat(y1);
   4573    return function(x) {
   4574      return y.map(function(y) {
   4575        return [ x, y ];
   4576      });
   4577    };
   4578  }
   4579  function d3_geo_graticuleY(x0, x1, dx) {
   4580    var x = d3.range(x0, x1 - ε, dx).concat(x1);
   4581    return function(y) {
   4582      return x.map(function(x) {
   4583        return [ x, y ];
   4584      });
   4585    };
   4586  }
   4587  function d3_source(d) {
   4588    return d.source;
   4589  }
   4590  function d3_target(d) {
   4591    return d.target;
   4592  }
   4593  d3.geo.greatArc = function() {
   4594    var source = d3_source, source_, target = d3_target, target_;
   4595    function greatArc() {
   4596      return {
   4597        type: "LineString",
   4598        coordinates: [ source_ || source.apply(this, arguments), target_ || target.apply(this, arguments) ]
   4599      };
   4600    }
   4601    greatArc.distance = function() {
   4602      return d3.geo.distance(source_ || source.apply(this, arguments), target_ || target.apply(this, arguments));
   4603    };
   4604    greatArc.source = function(_) {
   4605      if (!arguments.length) return source;
   4606      source = _, source_ = typeof _ === "function" ? null : _;
   4607      return greatArc;
   4608    };
   4609    greatArc.target = function(_) {
   4610      if (!arguments.length) return target;
   4611      target = _, target_ = typeof _ === "function" ? null : _;
   4612      return greatArc;
   4613    };
   4614    greatArc.precision = function() {
   4615      return arguments.length ? greatArc : 0;
   4616    };
   4617    return greatArc;
   4618  };
   4619  d3.geo.interpolate = function(source, target) {
   4620    return d3_geo_interpolate(source[0] * d3_radians, source[1] * d3_radians, target[0] * d3_radians, target[1] * d3_radians);
   4621  };
   4622  function d3_geo_interpolate(x0, y0, x1, y1) {
   4623    var cy0 = Math.cos(y0), sy0 = Math.sin(y0), cy1 = Math.cos(y1), sy1 = Math.sin(y1), kx0 = cy0 * Math.cos(x0), ky0 = cy0 * Math.sin(x0), kx1 = cy1 * Math.cos(x1), ky1 = cy1 * Math.sin(x1), d = 2 * Math.asin(Math.sqrt(d3_haversin(y1 - y0) + cy0 * cy1 * d3_haversin(x1 - x0))), k = 1 / Math.sin(d);
   4624    var interpolate = d ? function(t) {
   4625      var B = Math.sin(t *= d) * k, A = Math.sin(d - t) * k, x = A * kx0 + B * kx1, y = A * ky0 + B * ky1, z = A * sy0 + B * sy1;
   4626      return [ Math.atan2(y, x) * d3_degrees, Math.atan2(z, Math.sqrt(x * x + y * y)) * d3_degrees ];
   4627    } : function() {
   4628      return [ x0 * d3_degrees, y0 * d3_degrees ];
   4629    };
   4630    interpolate.distance = d;
   4631    return interpolate;
   4632  }
   4633  d3.geo.length = function(object) {
   4634    d3_geo_lengthSum = 0;
   4635    d3.geo.stream(object, d3_geo_length);
   4636    return d3_geo_lengthSum;
   4637  };
   4638  var d3_geo_lengthSum;
   4639  var d3_geo_length = {
   4640    sphere: d3_noop,
   4641    point: d3_noop,
   4642    lineStart: d3_geo_lengthLineStart,
   4643    lineEnd: d3_noop,
   4644    polygonStart: d3_noop,
   4645    polygonEnd: d3_noop
   4646  };
   4647  function d3_geo_lengthLineStart() {
   4648    var λ0, sinφ0, cosφ0;
   4649    d3_geo_length.point = function(λ, φ) {
   4650      λ0 = λ * d3_radians, sinφ0 = Math.sin(φ *= d3_radians), cosφ0 = Math.cos(φ);
   4651      d3_geo_length.point = nextPoint;
   4652    };
   4653    d3_geo_length.lineEnd = function() {
   4654      d3_geo_length.point = d3_geo_length.lineEnd = d3_noop;
   4655    };
   4656    function nextPoint(λ, φ) {
   4657      var sinφ = Math.sin(φ *= d3_radians), cosφ = Math.cos(φ), t = abs((λ *= d3_radians) - λ0), cosΔλ = Math.cos(t);
   4658      d3_geo_lengthSum += Math.atan2(Math.sqrt((t = cosφ * Math.sin(t)) * t + (t = cosφ0 * sinφ - sinφ0 * cosφ * cosΔλ) * t), sinφ0 * sinφ + cosφ0 * cosφ * cosΔλ);
   4659      λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ;
   4660    }
   4661  }
   4662  function d3_geo_azimuthal(scale, angle) {
   4663    function azimuthal(λ, φ) {
   4664      var cosλ = Math.cos(λ), cosφ = Math.cos(φ), k = scale(cosλ * cosφ);
   4665      return [ k * cosφ * Math.sin(λ), k * Math.sin(φ) ];
   4666    }
   4667    azimuthal.invert = function(x, y) {
   4668      var ρ = Math.sqrt(x * x + y * y), c = angle(ρ), sinc = Math.sin(c), cosc = Math.cos(c);
   4669      return [ Math.atan2(x * sinc, ρ * cosc), Math.asin(ρ && y * sinc / ρ) ];
   4670    };
   4671    return azimuthal;
   4672  }
   4673  var d3_geo_azimuthalEqualArea = d3_geo_azimuthal(function(cosλcosφ) {
   4674    return Math.sqrt(2 / (1 + cosλcosφ));
   4675  }, function(ρ) {
   4676    return 2 * Math.asin(ρ / 2);
   4677  });
   4678  (d3.geo.azimuthalEqualArea = function() {
   4679    return d3_geo_projection(d3_geo_azimuthalEqualArea);
   4680  }).raw = d3_geo_azimuthalEqualArea;
   4681  var d3_geo_azimuthalEquidistant = d3_geo_azimuthal(function(cosλcosφ) {
   4682    var c = Math.acos(cosλcosφ);
   4683    return c && c / Math.sin(c);
   4684  }, d3_identity);
   4685  (d3.geo.azimuthalEquidistant = function() {
   4686    return d3_geo_projection(d3_geo_azimuthalEquidistant);
   4687  }).raw = d3_geo_azimuthalEquidistant;
   4688  function d3_geo_conicConformal(φ0, φ1) {
   4689    var cosφ0 = Math.cos(φ0), t = function(φ) {
   4690      return Math.tan(π / 4 + φ / 2);
   4691    }, n = φ0 === φ1 ? Math.sin(φ0) : Math.log(cosφ0 / Math.cos(φ1)) / Math.log(t(φ1) / t(φ0)), F = cosφ0 * Math.pow(t(φ0), n) / n;
   4692    if (!n) return d3_geo_mercator;
   4693    function forward(λ, φ) {
   4694      if (F > 0) {
   4695        if (φ < -halfπ + ε) φ = -halfπ + ε;
   4696      } else {
   4697        if (φ > halfπ - ε) φ = halfπ - ε;
   4698      }
   4699      var ρ = F / Math.pow(t(φ), n);
   4700      return [ ρ * Math.sin(n * λ), F - ρ * Math.cos(n * λ) ];
   4701    }
   4702    forward.invert = function(x, y) {
   4703      var ρ0_y = F - y, ρ = d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y);
   4704      return [ Math.atan2(x, ρ0_y) / n, 2 * Math.atan(Math.pow(F / ρ, 1 / n)) - halfπ ];
   4705    };
   4706    return forward;
   4707  }
   4708  (d3.geo.conicConformal = function() {
   4709    return d3_geo_conic(d3_geo_conicConformal);
   4710  }).raw = d3_geo_conicConformal;
   4711  function d3_geo_conicEquidistant(φ0, φ1) {
   4712    var cosφ0 = Math.cos(φ0), n = φ0 === φ1 ? Math.sin(φ0) : (cosφ0 - Math.cos(φ1)) / (φ1 - φ0), G = cosφ0 / n + φ0;
   4713    if (abs(n) < ε) return d3_geo_equirectangular;
   4714    function forward(λ, φ) {
   4715      var ρ = G - φ;
   4716      return [ ρ * Math.sin(n * λ), G - ρ * Math.cos(n * λ) ];
   4717    }
   4718    forward.invert = function(x, y) {
   4719      var ρ0_y = G - y;
   4720      return [ Math.atan2(x, ρ0_y) / n, G - d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y) ];
   4721    };
   4722    return forward;
   4723  }
   4724  (d3.geo.conicEquidistant = function() {
   4725    return d3_geo_conic(d3_geo_conicEquidistant);
   4726  }).raw = d3_geo_conicEquidistant;
   4727  var d3_geo_gnomonic = d3_geo_azimuthal(function(cosλcosφ) {
   4728    return 1 / cosλcosφ;
   4729  }, Math.atan);
   4730  (d3.geo.gnomonic = function() {
   4731    return d3_geo_projection(d3_geo_gnomonic);
   4732  }).raw = d3_geo_gnomonic;
   4733  function d3_geo_mercator(λ, φ) {
   4734    return [ λ, Math.log(Math.tan(π / 4 + φ / 2)) ];
   4735  }
   4736  d3_geo_mercator.invert = function(x, y) {
   4737    return [ x, 2 * Math.atan(Math.exp(y)) - halfπ ];
   4738  };
   4739  function d3_geo_mercatorProjection(project) {
   4740    var m = d3_geo_projection(project), scale = m.scale, translate = m.translate, clipExtent = m.clipExtent, clipAuto;
   4741    m.scale = function() {
   4742      var v = scale.apply(m, arguments);
   4743      return v === m ? clipAuto ? m.clipExtent(null) : m : v;
   4744    };
   4745    m.translate = function() {
   4746      var v = translate.apply(m, arguments);
   4747      return v === m ? clipAuto ? m.clipExtent(null) : m : v;
   4748    };
   4749    m.clipExtent = function(_) {
   4750      var v = clipExtent.apply(m, arguments);
   4751      if (v === m) {
   4752        if (clipAuto = _ == null) {
   4753          var k = π * scale(), t = translate();
   4754          clipExtent([ [ t[0] - k, t[1] - k ], [ t[0] + k, t[1] + k ] ]);
   4755        }
   4756      } else if (clipAuto) {
   4757        v = null;
   4758      }
   4759      return v;
   4760    };
   4761    return m.clipExtent(null);
   4762  }
   4763  (d3.geo.mercator = function() {
   4764    return d3_geo_mercatorProjection(d3_geo_mercator);
   4765  }).raw = d3_geo_mercator;
   4766  var d3_geo_orthographic = d3_geo_azimuthal(function() {
   4767    return 1;
   4768  }, Math.asin);
   4769  (d3.geo.orthographic = function() {
   4770    return d3_geo_projection(d3_geo_orthographic);
   4771  }).raw = d3_geo_orthographic;
   4772  var d3_geo_stereographic = d3_geo_azimuthal(function(cosλcosφ) {
   4773    return 1 / (1 + cosλcosφ);
   4774  }, function(ρ) {
   4775    return 2 * Math.atan(ρ);
   4776  });
   4777  (d3.geo.stereographic = function() {
   4778    return d3_geo_projection(d3_geo_stereographic);
   4779  }).raw = d3_geo_stereographic;
   4780  function d3_geo_transverseMercator(λ, φ) {
   4781    return [ Math.log(Math.tan(π / 4 + φ / 2)), -λ ];
   4782  }
   4783  d3_geo_transverseMercator.invert = function(x, y) {
   4784    return [ -y, 2 * Math.atan(Math.exp(x)) - halfπ ];
   4785  };
   4786  (d3.geo.transverseMercator = function() {
   4787    var projection = d3_geo_mercatorProjection(d3_geo_transverseMercator), center = projection.center, rotate = projection.rotate;
   4788    projection.center = function(_) {
   4789      return _ ? center([ -_[1], _[0] ]) : (_ = center(), [ _[1], -_[0] ]);
   4790    };
   4791    projection.rotate = function(_) {
   4792      return _ ? rotate([ _[0], _[1], _.length > 2 ? _[2] + 90 : 90 ]) : (_ = rotate(), 
   4793      [ _[0], _[1], _[2] - 90 ]);
   4794    };
   4795    return rotate([ 0, 0, 90 ]);
   4796  }).raw = d3_geo_transverseMercator;
   4797  d3.geom = {};
   4798  function d3_geom_pointX(d) {
   4799    return d[0];
   4800  }
   4801  function d3_geom_pointY(d) {
   4802    return d[1];
   4803  }
   4804  d3.geom.hull = function(vertices) {
   4805    var x = d3_geom_pointX, y = d3_geom_pointY;
   4806    if (arguments.length) return hull(vertices);
   4807    function hull(data) {
   4808      if (data.length < 3) return [];
   4809      var fx = d3_functor(x), fy = d3_functor(y), i, n = data.length, points = [], flippedPoints = [];
   4810      for (i = 0; i < n; i++) {
   4811        points.push([ +fx.call(this, data[i], i), +fy.call(this, data[i], i), i ]);
   4812      }
   4813      points.sort(d3_geom_hullOrder);
   4814      for (i = 0; i < n; i++) flippedPoints.push([ points[i][0], -points[i][1] ]);
   4815      var upper = d3_geom_hullUpper(points), lower = d3_geom_hullUpper(flippedPoints);
   4816      var skipLeft = lower[0] === upper[0], skipRight = lower[lower.length - 1] === upper[upper.length - 1], polygon = [];
   4817      for (i = upper.length - 1; i >= 0; --i) polygon.push(data[points[upper[i]][2]]);
   4818      for (i = +skipLeft; i < lower.length - skipRight; ++i) polygon.push(data[points[lower[i]][2]]);
   4819      return polygon;
   4820    }
   4821    hull.x = function(_) {
   4822      return arguments.length ? (x = _, hull) : x;
   4823    };
   4824    hull.y = function(_) {
   4825      return arguments.length ? (y = _, hull) : y;
   4826    };
   4827    return hull;
   4828  };
   4829  function d3_geom_hullUpper(points) {
   4830    var n = points.length, hull = [ 0, 1 ], hs = 2;
   4831    for (var i = 2; i < n; i++) {
   4832      while (hs > 1 && d3_cross2d(points[hull[hs - 2]], points[hull[hs - 1]], points[i]) <= 0) --hs;
   4833      hull[hs++] = i;
   4834    }
   4835    return hull.slice(0, hs);
   4836  }
   4837  function d3_geom_hullOrder(a, b) {
   4838    return a[0] - b[0] || a[1] - b[1];
   4839  }
   4840  d3.geom.polygon = function(coordinates) {
   4841    d3_subclass(coordinates, d3_geom_polygonPrototype);
   4842    return coordinates;
   4843  };
   4844  var d3_geom_polygonPrototype = d3.geom.polygon.prototype = [];
   4845  d3_geom_polygonPrototype.area = function() {
   4846    var i = -1, n = this.length, a, b = this[n - 1], area = 0;
   4847    while (++i < n) {
   4848      a = b;
   4849      b = this[i];
   4850      area += a[1] * b[0] - a[0] * b[1];
   4851    }
   4852    return area * .5;
   4853  };
   4854  d3_geom_polygonPrototype.centroid = function(k) {
   4855    var i = -1, n = this.length, x = 0, y = 0, a, b = this[n - 1], c;
   4856    if (!arguments.length) k = -1 / (6 * this.area());
   4857    while (++i < n) {
   4858      a = b;
   4859      b = this[i];
   4860      c = a[0] * b[1] - b[0] * a[1];
   4861      x += (a[0] + b[0]) * c;
   4862      y += (a[1] + b[1]) * c;
   4863    }
   4864    return [ x * k, y * k ];
   4865  };
   4866  d3_geom_polygonPrototype.clip = function(subject) {
   4867    var input, closed = d3_geom_polygonClosed(subject), i = -1, n = this.length - d3_geom_polygonClosed(this), j, m, a = this[n - 1], b, c, d;
   4868    while (++i < n) {
   4869      input = subject.slice();
   4870      subject.length = 0;
   4871      b = this[i];
   4872      c = input[(m = input.length - closed) - 1];
   4873      j = -1;
   4874      while (++j < m) {
   4875        d = input[j];
   4876        if (d3_geom_polygonInside(d, a, b)) {
   4877          if (!d3_geom_polygonInside(c, a, b)) {
   4878            subject.push(d3_geom_polygonIntersect(c, d, a, b));
   4879          }
   4880          subject.push(d);
   4881        } else if (d3_geom_polygonInside(c, a, b)) {
   4882          subject.push(d3_geom_polygonIntersect(c, d, a, b));
   4883        }
   4884        c = d;
   4885      }
   4886      if (closed) subject.push(subject[0]);
   4887      a = b;
   4888    }
   4889    return subject;
   4890  };
   4891  function d3_geom_polygonInside(p, a, b) {
   4892    return (b[0] - a[0]) * (p[1] - a[1]) < (b[1] - a[1]) * (p[0] - a[0]);
   4893  }
   4894  function d3_geom_polygonIntersect(c, d, a, b) {
   4895    var x1 = c[0], x3 = a[0], x21 = d[0] - x1, x43 = b[0] - x3, y1 = c[1], y3 = a[1], y21 = d[1] - y1, y43 = b[1] - y3, ua = (x43 * (y1 - y3) - y43 * (x1 - x3)) / (y43 * x21 - x43 * y21);
   4896    return [ x1 + ua * x21, y1 + ua * y21 ];
   4897  }
   4898  function d3_geom_polygonClosed(coordinates) {
   4899    var a = coordinates[0], b = coordinates[coordinates.length - 1];
   4900    return !(a[0] - b[0] || a[1] - b[1]);
   4901  }
   4902  var d3_geom_voronoiEdges, d3_geom_voronoiCells, d3_geom_voronoiBeaches, d3_geom_voronoiBeachPool = [], d3_geom_voronoiFirstCircle, d3_geom_voronoiCircles, d3_geom_voronoiCirclePool = [];
   4903  function d3_geom_voronoiBeach() {
   4904    d3_geom_voronoiRedBlackNode(this);
   4905    this.edge = this.site = this.circle = null;
   4906  }
   4907  function d3_geom_voronoiCreateBeach(site) {
   4908    var beach = d3_geom_voronoiBeachPool.pop() || new d3_geom_voronoiBeach();
   4909    beach.site = site;
   4910    return beach;
   4911  }
   4912  function d3_geom_voronoiDetachBeach(beach) {
   4913    d3_geom_voronoiDetachCircle(beach);
   4914    d3_geom_voronoiBeaches.remove(beach);
   4915    d3_geom_voronoiBeachPool.push(beach);
   4916    d3_geom_voronoiRedBlackNode(beach);
   4917  }
   4918  function d3_geom_voronoiRemoveBeach(beach) {
   4919    var circle = beach.circle, x = circle.x, y = circle.cy, vertex = {
   4920      x: x,
   4921      y: y
   4922    }, previous = beach.P, next = beach.N, disappearing = [ beach ];
   4923    d3_geom_voronoiDetachBeach(beach);
   4924    var lArc = previous;
   4925    while (lArc.circle && abs(x - lArc.circle.x) < ε && abs(y - lArc.circle.cy) < ε) {
   4926      previous = lArc.P;
   4927      disappearing.unshift(lArc);
   4928      d3_geom_voronoiDetachBeach(lArc);
   4929      lArc = previous;
   4930    }
   4931    disappearing.unshift(lArc);
   4932    d3_geom_voronoiDetachCircle(lArc);
   4933    var rArc = next;
   4934    while (rArc.circle && abs(x - rArc.circle.x) < ε && abs(y - rArc.circle.cy) < ε) {
   4935      next = rArc.N;
   4936      disappearing.push(rArc);
   4937      d3_geom_voronoiDetachBeach(rArc);
   4938      rArc = next;
   4939    }
   4940    disappearing.push(rArc);
   4941    d3_geom_voronoiDetachCircle(rArc);
   4942    var nArcs = disappearing.length, iArc;
   4943    for (iArc = 1; iArc < nArcs; ++iArc) {
   4944      rArc = disappearing[iArc];
   4945      lArc = disappearing[iArc - 1];
   4946      d3_geom_voronoiSetEdgeEnd(rArc.edge, lArc.site, rArc.site, vertex);
   4947    }
   4948    lArc = disappearing[0];
   4949    rArc = disappearing[nArcs - 1];
   4950    rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, rArc.site, null, vertex);
   4951    d3_geom_voronoiAttachCircle(lArc);
   4952    d3_geom_voronoiAttachCircle(rArc);
   4953  }
   4954  function d3_geom_voronoiAddBeach(site) {
   4955    var x = site.x, directrix = site.y, lArc, rArc, dxl, dxr, node = d3_geom_voronoiBeaches._;
   4956    while (node) {
   4957      dxl = d3_geom_voronoiLeftBreakPoint(node, directrix) - x;
   4958      if (dxl > ε) node = node.L; else {
   4959        dxr = x - d3_geom_voronoiRightBreakPoint(node, directrix);
   4960        if (dxr > ε) {
   4961          if (!node.R) {
   4962            lArc = node;
   4963            break;
   4964          }
   4965          node = node.R;
   4966        } else {
   4967          if (dxl > -ε) {
   4968            lArc = node.P;
   4969            rArc = node;
   4970          } else if (dxr > -ε) {
   4971            lArc = node;
   4972            rArc = node.N;
   4973          } else {
   4974            lArc = rArc = node;
   4975          }
   4976          break;
   4977        }
   4978      }
   4979    }
   4980    var newArc = d3_geom_voronoiCreateBeach(site);
   4981    d3_geom_voronoiBeaches.insert(lArc, newArc);
   4982    if (!lArc && !rArc) return;
   4983    if (lArc === rArc) {
   4984      d3_geom_voronoiDetachCircle(lArc);
   4985      rArc = d3_geom_voronoiCreateBeach(lArc.site);
   4986      d3_geom_voronoiBeaches.insert(newArc, rArc);
   4987      newArc.edge = rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
   4988      d3_geom_voronoiAttachCircle(lArc);
   4989      d3_geom_voronoiAttachCircle(rArc);
   4990      return;
   4991    }
   4992    if (!rArc) {
   4993      newArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
   4994      return;
   4995    }
   4996    d3_geom_voronoiDetachCircle(lArc);
   4997    d3_geom_voronoiDetachCircle(rArc);
   4998    var lSite = lArc.site, ax = lSite.x, ay = lSite.y, bx = site.x - ax, by = site.y - ay, rSite = rArc.site, cx = rSite.x - ax, cy = rSite.y - ay, d = 2 * (bx * cy - by * cx), hb = bx * bx + by * by, hc = cx * cx + cy * cy, vertex = {
   4999      x: (cy * hb - by * hc) / d + ax,
   5000      y: (bx * hc - cx * hb) / d + ay
   5001    };
   5002    d3_geom_voronoiSetEdgeEnd(rArc.edge, lSite, rSite, vertex);
   5003    newArc.edge = d3_geom_voronoiCreateEdge(lSite, site, null, vertex);
   5004    rArc.edge = d3_geom_voronoiCreateEdge(site, rSite, null, vertex);
   5005    d3_geom_voronoiAttachCircle(lArc);
   5006    d3_geom_voronoiAttachCircle(rArc);
   5007  }
   5008  function d3_geom_voronoiLeftBreakPoint(arc, directrix) {
   5009    var site = arc.site, rfocx = site.x, rfocy = site.y, pby2 = rfocy - directrix;
   5010    if (!pby2) return rfocx;
   5011    var lArc = arc.P;
   5012    if (!lArc) return -Infinity;
   5013    site = lArc.site;
   5014    var lfocx = site.x, lfocy = site.y, plby2 = lfocy - directrix;
   5015    if (!plby2) return lfocx;
   5016    var hl = lfocx - rfocx, aby2 = 1 / pby2 - 1 / plby2, b = hl / plby2;
   5017    if (aby2) return (-b + Math.sqrt(b * b - 2 * aby2 * (hl * hl / (-2 * plby2) - lfocy + plby2 / 2 + rfocy - pby2 / 2))) / aby2 + rfocx;
   5018    return (rfocx + lfocx) / 2;
   5019  }
   5020  function d3_geom_voronoiRightBreakPoint(arc, directrix) {
   5021    var rArc = arc.N;
   5022    if (rArc) return d3_geom_voronoiLeftBreakPoint(rArc, directrix);
   5023    var site = arc.site;
   5024    return site.y === directrix ? site.x : Infinity;
   5025  }
   5026  function d3_geom_voronoiCell(site) {
   5027    this.site = site;
   5028    this.edges = [];
   5029  }
   5030  d3_geom_voronoiCell.prototype.prepare = function() {
   5031    var halfEdges = this.edges, iHalfEdge = halfEdges.length, edge;
   5032    while (iHalfEdge--) {
   5033      edge = halfEdges[iHalfEdge].edge;
   5034      if (!edge.b || !edge.a) halfEdges.splice(iHalfEdge, 1);
   5035    }
   5036    halfEdges.sort(d3_geom_voronoiHalfEdgeOrder);
   5037    return halfEdges.length;
   5038  };
   5039  function d3_geom_voronoiCloseCells(extent) {
   5040    var x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], x2, y2, x3, y3, cells = d3_geom_voronoiCells, iCell = cells.length, cell, iHalfEdge, halfEdges, nHalfEdges, start, end;
   5041    while (iCell--) {
   5042      cell = cells[iCell];
   5043      if (!cell || !cell.prepare()) continue;
   5044      halfEdges = cell.edges;
   5045      nHalfEdges = halfEdges.length;
   5046      iHalfEdge = 0;
   5047      while (iHalfEdge < nHalfEdges) {
   5048        end = halfEdges[iHalfEdge].end(), x3 = end.x, y3 = end.y;
   5049        start = halfEdges[++iHalfEdge % nHalfEdges].start(), x2 = start.x, y2 = start.y;
   5050        if (abs(x3 - x2) > ε || abs(y3 - y2) > ε) {
   5051          halfEdges.splice(iHalfEdge, 0, new d3_geom_voronoiHalfEdge(d3_geom_voronoiCreateBorderEdge(cell.site, end, abs(x3 - x0) < ε && y1 - y3 > ε ? {
   5052            x: x0,
   5053            y: abs(x2 - x0) < ε ? y2 : y1
   5054          } : abs(y3 - y1) < ε && x1 - x3 > ε ? {
   5055            x: abs(y2 - y1) < ε ? x2 : x1,
   5056            y: y1
   5057          } : abs(x3 - x1) < ε && y3 - y0 > ε ? {
   5058            x: x1,
   5059            y: abs(x2 - x1) < ε ? y2 : y0
   5060          } : abs(y3 - y0) < ε && x3 - x0 > ε ? {
   5061            x: abs(y2 - y0) < ε ? x2 : x0,
   5062            y: y0
   5063          } : null), cell.site, null));
   5064          ++nHalfEdges;
   5065        }
   5066      }
   5067    }
   5068  }
   5069  function d3_geom_voronoiHalfEdgeOrder(a, b) {
   5070    return b.angle - a.angle;
   5071  }
   5072  function d3_geom_voronoiCircle() {
   5073    d3_geom_voronoiRedBlackNode(this);
   5074    this.x = this.y = this.arc = this.site = this.cy = null;
   5075  }
   5076  function d3_geom_voronoiAttachCircle(arc) {
   5077    var lArc = arc.P, rArc = arc.N;
   5078    if (!lArc || !rArc) return;
   5079    var lSite = lArc.site, cSite = arc.site, rSite = rArc.site;
   5080    if (lSite === rSite) return;
   5081    var bx = cSite.x, by = cSite.y, ax = lSite.x - bx, ay = lSite.y - by, cx = rSite.x - bx, cy = rSite.y - by;
   5082    var d = 2 * (ax * cy - ay * cx);
   5083    if (d >= -ε2) return;
   5084    var ha = ax * ax + ay * ay, hc = cx * cx + cy * cy, x = (cy * ha - ay * hc) / d, y = (ax * hc - cx * ha) / d, cy = y + by;
   5085    var circle = d3_geom_voronoiCirclePool.pop() || new d3_geom_voronoiCircle();
   5086    circle.arc = arc;
   5087    circle.site = cSite;
   5088    circle.x = x + bx;
   5089    circle.y = cy + Math.sqrt(x * x + y * y);
   5090    circle.cy = cy;
   5091    arc.circle = circle;
   5092    var before = null, node = d3_geom_voronoiCircles._;
   5093    while (node) {
   5094      if (circle.y < node.y || circle.y === node.y && circle.x <= node.x) {
   5095        if (node.L) node = node.L; else {
   5096          before = node.P;
   5097          break;
   5098        }
   5099      } else {
   5100        if (node.R) node = node.R; else {
   5101          before = node;
   5102          break;
   5103        }
   5104      }
   5105    }
   5106    d3_geom_voronoiCircles.insert(before, circle);
   5107    if (!before) d3_geom_voronoiFirstCircle = circle;
   5108  }
   5109  function d3_geom_voronoiDetachCircle(arc) {
   5110    var circle = arc.circle;
   5111    if (circle) {
   5112      if (!circle.P) d3_geom_voronoiFirstCircle = circle.N;
   5113      d3_geom_voronoiCircles.remove(circle);
   5114      d3_geom_voronoiCirclePool.push(circle);
   5115      d3_geom_voronoiRedBlackNode(circle);
   5116      arc.circle = null;
   5117    }
   5118  }
   5119  function d3_geom_voronoiClipEdges(extent) {
   5120    var edges = d3_geom_voronoiEdges, clip = d3_geom_clipLine(extent[0][0], extent[0][1], extent[1][0], extent[1][1]), i = edges.length, e;
   5121    while (i--) {
   5122      e = edges[i];
   5123      if (!d3_geom_voronoiConnectEdge(e, extent) || !clip(e) || abs(e.a.x - e.b.x) < ε && abs(e.a.y - e.b.y) < ε) {
   5124        e.a = e.b = null;
   5125        edges.splice(i, 1);
   5126      }
   5127    }
   5128  }
   5129  function d3_geom_voronoiConnectEdge(edge, extent) {
   5130    var vb = edge.b;
   5131    if (vb) return true;
   5132    var va = edge.a, x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], lSite = edge.l, rSite = edge.r, lx = lSite.x, ly = lSite.y, rx = rSite.x, ry = rSite.y, fx = (lx + rx) / 2, fy = (ly + ry) / 2, fm, fb;
   5133    if (ry === ly) {
   5134      if (fx < x0 || fx >= x1) return;
   5135      if (lx > rx) {
   5136        if (!va) va = {
   5137          x: fx,
   5138          y: y0
   5139        }; else if (va.y >= y1) return;
   5140        vb = {
   5141          x: fx,
   5142          y: y1
   5143        };
   5144      } else {
   5145        if (!va) va = {
   5146          x: fx,
   5147          y: y1
   5148        }; else if (va.y < y0) return;
   5149        vb = {
   5150          x: fx,
   5151          y: y0
   5152        };
   5153      }
   5154    } else {
   5155      fm = (lx - rx) / (ry - ly);
   5156      fb = fy - fm * fx;
   5157      if (fm < -1 || fm > 1) {
   5158        if (lx > rx) {
   5159          if (!va) va = {
   5160            x: (y0 - fb) / fm,
   5161            y: y0
   5162          }; else if (va.y >= y1) return;
   5163          vb = {
   5164            x: (y1 - fb) / fm,
   5165            y: y1
   5166          };
   5167        } else {
   5168          if (!va) va = {
   5169            x: (y1 - fb) / fm,
   5170            y: y1
   5171          }; else if (va.y < y0) return;
   5172          vb = {
   5173            x: (y0 - fb) / fm,
   5174            y: y0
   5175          };
   5176        }
   5177      } else {
   5178        if (ly < ry) {
   5179          if (!va) va = {
   5180            x: x0,
   5181            y: fm * x0 + fb
   5182          }; else if (va.x >= x1) return;
   5183          vb = {
   5184            x: x1,
   5185            y: fm * x1 + fb
   5186          };
   5187        } else {
   5188          if (!va) va = {
   5189            x: x1,
   5190            y: fm * x1 + fb
   5191          }; else if (va.x < x0) return;
   5192          vb = {
   5193            x: x0,
   5194            y: fm * x0 + fb
   5195          };
   5196        }
   5197      }
   5198    }
   5199    edge.a = va;
   5200    edge.b = vb;
   5201    return true;
   5202  }
   5203  function d3_geom_voronoiEdge(lSite, rSite) {
   5204    this.l = lSite;
   5205    this.r = rSite;
   5206    this.a = this.b = null;
   5207  }
   5208  function d3_geom_voronoiCreateEdge(lSite, rSite, va, vb) {
   5209    var edge = new d3_geom_voronoiEdge(lSite, rSite);
   5210    d3_geom_voronoiEdges.push(edge);
   5211    if (va) d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, va);
   5212    if (vb) d3_geom_voronoiSetEdgeEnd(edge, rSite, lSite, vb);
   5213    d3_geom_voronoiCells[lSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, lSite, rSite));
   5214    d3_geom_voronoiCells[rSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, rSite, lSite));
   5215    return edge;
   5216  }
   5217  function d3_geom_voronoiCreateBorderEdge(lSite, va, vb) {
   5218    var edge = new d3_geom_voronoiEdge(lSite, null);
   5219    edge.a = va;
   5220    edge.b = vb;
   5221    d3_geom_voronoiEdges.push(edge);
   5222    return edge;
   5223  }
   5224  function d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, vertex) {
   5225    if (!edge.a && !edge.b) {
   5226      edge.a = vertex;
   5227      edge.l = lSite;
   5228      edge.r = rSite;
   5229    } else if (edge.l === rSite) {
   5230      edge.b = vertex;
   5231    } else {
   5232      edge.a = vertex;
   5233    }
   5234  }
   5235  function d3_geom_voronoiHalfEdge(edge, lSite, rSite) {
   5236    var va = edge.a, vb = edge.b;
   5237    this.edge = edge;
   5238    this.site = lSite;
   5239    this.angle = rSite ? Math.atan2(rSite.y - lSite.y, rSite.x - lSite.x) : edge.l === lSite ? Math.atan2(vb.x - va.x, va.y - vb.y) : Math.atan2(va.x - vb.x, vb.y - va.y);
   5240  }
   5241  d3_geom_voronoiHalfEdge.prototype = {
   5242    start: function() {
   5243      return this.edge.l === this.site ? this.edge.a : this.edge.b;
   5244    },
   5245    end: function() {
   5246      return this.edge.l === this.site ? this.edge.b : this.edge.a;
   5247    }
   5248  };
   5249  function d3_geom_voronoiRedBlackTree() {
   5250    this._ = null;
   5251  }
   5252  function d3_geom_voronoiRedBlackNode(node) {
   5253    node.U = node.C = node.L = node.R = node.P = node.N = null;
   5254  }
   5255  d3_geom_voronoiRedBlackTree.prototype = {
   5256    insert: function(after, node) {
   5257      var parent, grandpa, uncle;
   5258      if (after) {
   5259        node.P = after;
   5260        node.N = after.N;
   5261        if (after.N) after.N.P = node;
   5262        after.N = node;
   5263        if (after.R) {
   5264          after = after.R;
   5265          while (after.L) after = after.L;
   5266          after.L = node;
   5267        } else {
   5268          after.R = node;
   5269        }
   5270        parent = after;
   5271      } else if (this._) {
   5272        after = d3_geom_voronoiRedBlackFirst(this._);
   5273        node.P = null;
   5274        node.N = after;
   5275        after.P = after.L = node;
   5276        parent = after;
   5277      } else {
   5278        node.P = node.N = null;
   5279        this._ = node;
   5280        parent = null;
   5281      }
   5282      node.L = node.R = null;
   5283      node.U = parent;
   5284      node.C = true;
   5285      after = node;
   5286      while (parent && parent.C) {
   5287        grandpa = parent.U;
   5288        if (parent === grandpa.L) {
   5289          uncle = grandpa.R;
   5290          if (uncle && uncle.C) {
   5291            parent.C = uncle.C = false;
   5292            grandpa.C = true;
   5293            after = grandpa;
   5294          } else {
   5295            if (after === parent.R) {
   5296              d3_geom_voronoiRedBlackRotateLeft(this, parent);
   5297              after = parent;
   5298              parent = after.U;
   5299            }
   5300            parent.C = false;
   5301            grandpa.C = true;
   5302            d3_geom_voronoiRedBlackRotateRight(this, grandpa);
   5303          }
   5304        } else {
   5305          uncle = grandpa.L;
   5306          if (uncle && uncle.C) {
   5307            parent.C = uncle.C = false;
   5308            grandpa.C = true;
   5309            after = grandpa;
   5310          } else {
   5311            if (after === parent.L) {
   5312              d3_geom_voronoiRedBlackRotateRight(this, parent);
   5313              after = parent;
   5314              parent = after.U;
   5315            }
   5316            parent.C = false;
   5317            grandpa.C = true;
   5318            d3_geom_voronoiRedBlackRotateLeft(this, grandpa);
   5319          }
   5320        }
   5321        parent = after.U;
   5322      }
   5323      this._.C = false;
   5324    },
   5325    remove: function(node) {
   5326      if (node.N) node.N.P = node.P;
   5327      if (node.P) node.P.N = node.N;
   5328      node.N = node.P = null;
   5329      var parent = node.U, sibling, left = node.L, right = node.R, next, red;
   5330      if (!left) next = right; else if (!right) next = left; else next = d3_geom_voronoiRedBlackFirst(right);
   5331      if (parent) {
   5332        if (parent.L === node) parent.L = next; else parent.R = next;
   5333      } else {
   5334        this._ = next;
   5335      }
   5336      if (left && right) {
   5337        red = next.C;
   5338        next.C = node.C;
   5339        next.L = left;
   5340        left.U = next;
   5341        if (next !== right) {
   5342          parent = next.U;
   5343          next.U = node.U;
   5344          node = next.R;
   5345          parent.L = node;
   5346          next.R = right;
   5347          right.U = next;
   5348        } else {
   5349          next.U = parent;
   5350          parent = next;
   5351          node = next.R;
   5352        }
   5353      } else {
   5354        red = node.C;
   5355        node = next;
   5356      }
   5357      if (node) node.U = parent;
   5358      if (red) return;
   5359      if (node && node.C) {
   5360        node.C = false;
   5361        return;
   5362      }
   5363      do {
   5364        if (node === this._) break;
   5365        if (node === parent.L) {
   5366          sibling = parent.R;
   5367          if (sibling.C) {
   5368            sibling.C = false;
   5369            parent.C = true;
   5370            d3_geom_voronoiRedBlackRotateLeft(this, parent);
   5371            sibling = parent.R;
   5372          }
   5373          if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
   5374            if (!sibling.R || !sibling.R.C) {
   5375              sibling.L.C = false;
   5376              sibling.C = true;
   5377              d3_geom_voronoiRedBlackRotateRight(this, sibling);
   5378              sibling = parent.R;
   5379            }
   5380            sibling.C = parent.C;
   5381            parent.C = sibling.R.C = false;
   5382            d3_geom_voronoiRedBlackRotateLeft(this, parent);
   5383            node = this._;
   5384            break;
   5385          }
   5386        } else {
   5387          sibling = parent.L;
   5388          if (sibling.C) {
   5389            sibling.C = false;
   5390            parent.C = true;
   5391            d3_geom_voronoiRedBlackRotateRight(this, parent);
   5392            sibling = parent.L;
   5393          }
   5394          if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
   5395            if (!sibling.L || !sibling.L.C) {
   5396              sibling.R.C = false;
   5397              sibling.C = true;
   5398              d3_geom_voronoiRedBlackRotateLeft(this, sibling);
   5399              sibling = parent.L;
   5400            }
   5401            sibling.C = parent.C;
   5402            parent.C = sibling.L.C = false;
   5403            d3_geom_voronoiRedBlackRotateRight(this, parent);
   5404            node = this._;
   5405            break;
   5406          }
   5407        }
   5408        sibling.C = true;
   5409        node = parent;
   5410        parent = parent.U;
   5411      } while (!node.C);
   5412      if (node) node.C = false;
   5413    }
   5414  };
   5415  function d3_geom_voronoiRedBlackRotateLeft(tree, node) {
   5416    var p = node, q = node.R, parent = p.U;
   5417    if (parent) {
   5418      if (parent.L === p) parent.L = q; else parent.R = q;
   5419    } else {
   5420      tree._ = q;
   5421    }
   5422    q.U = parent;
   5423    p.U = q;
   5424    p.R = q.L;
   5425    if (p.R) p.R.U = p;
   5426    q.L = p;
   5427  }
   5428  function d3_geom_voronoiRedBlackRotateRight(tree, node) {
   5429    var p = node, q = node.L, parent = p.U;
   5430    if (parent) {
   5431      if (parent.L === p) parent.L = q; else parent.R = q;
   5432    } else {
   5433      tree._ = q;
   5434    }
   5435    q.U = parent;
   5436    p.U = q;
   5437    p.L = q.R;
   5438    if (p.L) p.L.U = p;
   5439    q.R = p;
   5440  }
   5441  function d3_geom_voronoiRedBlackFirst(node) {
   5442    while (node.L) node = node.L;
   5443    return node;
   5444  }
   5445  function d3_geom_voronoi(sites, bbox) {
   5446    var site = sites.sort(d3_geom_voronoiVertexOrder).pop(), x0, y0, circle;
   5447    d3_geom_voronoiEdges = [];
   5448    d3_geom_voronoiCells = new Array(sites.length);
   5449    d3_geom_voronoiBeaches = new d3_geom_voronoiRedBlackTree();
   5450    d3_geom_voronoiCircles = new d3_geom_voronoiRedBlackTree();
   5451    while (true) {
   5452      circle = d3_geom_voronoiFirstCircle;
   5453      if (site && (!circle || site.y < circle.y || site.y === circle.y && site.x < circle.x)) {
   5454        if (site.x !== x0 || site.y !== y0) {
   5455          d3_geom_voronoiCells[site.i] = new d3_geom_voronoiCell(site);
   5456          d3_geom_voronoiAddBeach(site);
   5457          x0 = site.x, y0 = site.y;
   5458        }
   5459        site = sites.pop();
   5460      } else if (circle) {
   5461        d3_geom_voronoiRemoveBeach(circle.arc);
   5462      } else {
   5463        break;
   5464      }
   5465    }
   5466    if (bbox) d3_geom_voronoiClipEdges(bbox), d3_geom_voronoiCloseCells(bbox);
   5467    var diagram = {
   5468      cells: d3_geom_voronoiCells,
   5469      edges: d3_geom_voronoiEdges
   5470    };
   5471    d3_geom_voronoiBeaches = d3_geom_voronoiCircles = d3_geom_voronoiEdges = d3_geom_voronoiCells = null;
   5472    return diagram;
   5473  }
   5474  function d3_geom_voronoiVertexOrder(a, b) {
   5475    return b.y - a.y || b.x - a.x;
   5476  }
   5477  d3.geom.voronoi = function(points) {
   5478    var x = d3_geom_pointX, y = d3_geom_pointY, fx = x, fy = y, clipExtent = d3_geom_voronoiClipExtent;
   5479    if (points) return voronoi(points);
   5480    function voronoi(data) {
   5481      var polygons = new Array(data.length), x0 = clipExtent[0][0], y0 = clipExtent[0][1], x1 = clipExtent[1][0], y1 = clipExtent[1][1];
   5482      d3_geom_voronoi(sites(data), clipExtent).cells.forEach(function(cell, i) {
   5483        var edges = cell.edges, site = cell.site, polygon = polygons[i] = edges.length ? edges.map(function(e) {
   5484          var s = e.start();
   5485          return [ s.x, s.y ];
   5486        }) : site.x >= x0 && site.x <= x1 && site.y >= y0 && site.y <= y1 ? [ [ x0, y1 ], [ x1, y1 ], [ x1, y0 ], [ x0, y0 ] ] : [];
   5487        polygon.point = data[i];
   5488      });
   5489      return polygons;
   5490    }
   5491    function sites(data) {
   5492      return data.map(function(d, i) {
   5493        return {
   5494          x: Math.round(fx(d, i) / ε) * ε,
   5495          y: Math.round(fy(d, i) / ε) * ε,
   5496          i: i
   5497        };
   5498      });
   5499    }
   5500    voronoi.links = function(data) {
   5501      return d3_geom_voronoi(sites(data)).edges.filter(function(edge) {
   5502        return edge.l && edge.r;
   5503      }).map(function(edge) {
   5504        return {
   5505          source: data[edge.l.i],
   5506          target: data[edge.r.i]
   5507        };
   5508      });
   5509    };
   5510    voronoi.triangles = function(data) {
   5511      var triangles = [];
   5512      d3_geom_voronoi(sites(data)).cells.forEach(function(cell, i) {
   5513        var site = cell.site, edges = cell.edges.sort(d3_geom_voronoiHalfEdgeOrder), j = -1, m = edges.length, e0, s0, e1 = edges[m - 1].edge, s1 = e1.l === site ? e1.r : e1.l;
   5514        while (++j < m) {
   5515          e0 = e1;
   5516          s0 = s1;
   5517          e1 = edges[j].edge;
   5518          s1 = e1.l === site ? e1.r : e1.l;
   5519          if (i < s0.i && i < s1.i && d3_geom_voronoiTriangleArea(site, s0, s1) < 0) {
   5520            triangles.push([ data[i], data[s0.i], data[s1.i] ]);
   5521          }
   5522        }
   5523      });
   5524      return triangles;
   5525    };
   5526    voronoi.x = function(_) {
   5527      return arguments.length ? (fx = d3_functor(x = _), voronoi) : x;
   5528    };
   5529    voronoi.y = function(_) {
   5530      return arguments.length ? (fy = d3_functor(y = _), voronoi) : y;
   5531    };
   5532    voronoi.clipExtent = function(_) {
   5533      if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent;
   5534      clipExtent = _ == null ? d3_geom_voronoiClipExtent : _;
   5535      return voronoi;
   5536    };
   5537    voronoi.size = function(_) {
   5538      if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent && clipExtent[1];
   5539      return voronoi.clipExtent(_ && [ [ 0, 0 ], _ ]);
   5540    };
   5541    return voronoi;
   5542  };
   5543  var d3_geom_voronoiClipExtent = [ [ -1e6, -1e6 ], [ 1e6, 1e6 ] ];
   5544  function d3_geom_voronoiTriangleArea(a, b, c) {
   5545    return (a.x - c.x) * (b.y - a.y) - (a.x - b.x) * (c.y - a.y);
   5546  }
   5547  d3.geom.delaunay = function(vertices) {
   5548    return d3.geom.voronoi().triangles(vertices);
   5549  };
   5550  d3.geom.quadtree = function(points, x1, y1, x2, y2) {
   5551    var x = d3_geom_pointX, y = d3_geom_pointY, compat;
   5552    if (compat = arguments.length) {
   5553      x = d3_geom_quadtreeCompatX;
   5554      y = d3_geom_quadtreeCompatY;
   5555      if (compat === 3) {
   5556        y2 = y1;
   5557        x2 = x1;
   5558        y1 = x1 = 0;
   5559      }
   5560      return quadtree(points);
   5561    }
   5562    function quadtree(data) {
   5563      var d, fx = d3_functor(x), fy = d3_functor(y), xs, ys, i, n, x1_, y1_, x2_, y2_;
   5564      if (x1 != null) {
   5565        x1_ = x1, y1_ = y1, x2_ = x2, y2_ = y2;
   5566      } else {
   5567        x2_ = y2_ = -(x1_ = y1_ = Infinity);
   5568        xs = [], ys = [];
   5569        n = data.length;
   5570        if (compat) for (i = 0; i < n; ++i) {
   5571          d = data[i];
   5572          if (d.x < x1_) x1_ = d.x;
   5573          if (d.y < y1_) y1_ = d.y;
   5574          if (d.x > x2_) x2_ = d.x;
   5575          if (d.y > y2_) y2_ = d.y;
   5576          xs.push(d.x);
   5577          ys.push(d.y);
   5578        } else for (i = 0; i < n; ++i) {
   5579          var x_ = +fx(d = data[i], i), y_ = +fy(d, i);
   5580          if (x_ < x1_) x1_ = x_;
   5581          if (y_ < y1_) y1_ = y_;
   5582          if (x_ > x2_) x2_ = x_;
   5583          if (y_ > y2_) y2_ = y_;
   5584          xs.push(x_);
   5585          ys.push(y_);
   5586        }
   5587      }
   5588      var dx = x2_ - x1_, dy = y2_ - y1_;
   5589      if (dx > dy) y2_ = y1_ + dx; else x2_ = x1_ + dy;
   5590      function insert(n, d, x, y, x1, y1, x2, y2) {
   5591        if (isNaN(x) || isNaN(y)) return;
   5592        if (n.leaf) {
   5593          var nx = n.x, ny = n.y;
   5594          if (nx != null) {
   5595            if (abs(nx - x) + abs(ny - y) < .01) {
   5596              insertChild(n, d, x, y, x1, y1, x2, y2);
   5597            } else {
   5598              var nPoint = n.point;
   5599              n.x = n.y = n.point = null;
   5600              insertChild(n, nPoint, nx, ny, x1, y1, x2, y2);
   5601              insertChild(n, d, x, y, x1, y1, x2, y2);
   5602            }
   5603          } else {
   5604            n.x = x, n.y = y, n.point = d;
   5605          }
   5606        } else {
   5607          insertChild(n, d, x, y, x1, y1, x2, y2);
   5608        }
   5609      }
   5610      function insertChild(n, d, x, y, x1, y1, x2, y2) {
   5611        var xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym, i = below << 1 | right;
   5612        n.leaf = false;
   5613        n = n.nodes[i] || (n.nodes[i] = d3_geom_quadtreeNode());
   5614        if (right) x1 = xm; else x2 = xm;
   5615        if (below) y1 = ym; else y2 = ym;
   5616        insert(n, d, x, y, x1, y1, x2, y2);
   5617      }
   5618      var root = d3_geom_quadtreeNode();
   5619      root.add = function(d) {
   5620        insert(root, d, +fx(d, ++i), +fy(d, i), x1_, y1_, x2_, y2_);
   5621      };
   5622      root.visit = function(f) {
   5623        d3_geom_quadtreeVisit(f, root, x1_, y1_, x2_, y2_);
   5624      };
   5625      root.find = function(point) {
   5626        return d3_geom_quadtreeFind(root, point[0], point[1], x1_, y1_, x2_, y2_);
   5627      };
   5628      i = -1;
   5629      if (x1 == null) {
   5630        while (++i < n) {
   5631          insert(root, data[i], xs[i], ys[i], x1_, y1_, x2_, y2_);
   5632        }
   5633        --i;
   5634      } else data.forEach(root.add);
   5635      xs = ys = data = d = null;
   5636      return root;
   5637    }
   5638    quadtree.x = function(_) {
   5639      return arguments.length ? (x = _, quadtree) : x;
   5640    };
   5641    quadtree.y = function(_) {
   5642      return arguments.length ? (y = _, quadtree) : y;
   5643    };
   5644    quadtree.extent = function(_) {
   5645      if (!arguments.length) return x1 == null ? null : [ [ x1, y1 ], [ x2, y2 ] ];
   5646      if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = +_[0][0], y1 = +_[0][1], x2 = +_[1][0], 
   5647      y2 = +_[1][1];
   5648      return quadtree;
   5649    };
   5650    quadtree.size = function(_) {
   5651      if (!arguments.length) return x1 == null ? null : [ x2 - x1, y2 - y1 ];
   5652      if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = y1 = 0, x2 = +_[0], y2 = +_[1];
   5653      return quadtree;
   5654    };
   5655    return quadtree;
   5656  };
   5657  function d3_geom_quadtreeCompatX(d) {
   5658    return d.x;
   5659  }
   5660  function d3_geom_quadtreeCompatY(d) {
   5661    return d.y;
   5662  }
   5663  function d3_geom_quadtreeNode() {
   5664    return {
   5665      leaf: true,
   5666      nodes: [],
   5667      point: null,
   5668      x: null,
   5669      y: null
   5670    };
   5671  }
   5672  function d3_geom_quadtreeVisit(f, node, x1, y1, x2, y2) {
   5673    if (!f(node, x1, y1, x2, y2)) {
   5674      var sx = (x1 + x2) * .5, sy = (y1 + y2) * .5, children = node.nodes;
   5675      if (children[0]) d3_geom_quadtreeVisit(f, children[0], x1, y1, sx, sy);
   5676      if (children[1]) d3_geom_quadtreeVisit(f, children[1], sx, y1, x2, sy);
   5677      if (children[2]) d3_geom_quadtreeVisit(f, children[2], x1, sy, sx, y2);
   5678      if (children[3]) d3_geom_quadtreeVisit(f, children[3], sx, sy, x2, y2);
   5679    }
   5680  }
   5681  function d3_geom_quadtreeFind(root, x, y, x0, y0, x3, y3) {
   5682    var minDistance2 = Infinity, closestPoint;
   5683    (function find(node, x1, y1, x2, y2) {
   5684      if (x1 > x3 || y1 > y3 || x2 < x0 || y2 < y0) return;
   5685      if (point = node.point) {
   5686        var point, dx = x - node.x, dy = y - node.y, distance2 = dx * dx + dy * dy;
   5687        if (distance2 < minDistance2) {
   5688          var distance = Math.sqrt(minDistance2 = distance2);
   5689          x0 = x - distance, y0 = y - distance;
   5690          x3 = x + distance, y3 = y + distance;
   5691          closestPoint = point;
   5692        }
   5693      }
   5694      var children = node.nodes, xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym;
   5695      for (var i = below << 1 | right, j = i + 4; i < j; ++i) {
   5696        if (node = children[i & 3]) switch (i & 3) {
   5697         case 0:
   5698          find(node, x1, y1, xm, ym);
   5699          break;
   5700 
   5701         case 1:
   5702          find(node, xm, y1, x2, ym);
   5703          break;
   5704 
   5705         case 2:
   5706          find(node, x1, ym, xm, y2);
   5707          break;
   5708 
   5709         case 3:
   5710          find(node, xm, ym, x2, y2);
   5711          break;
   5712        }
   5713      }
   5714    })(root, x0, y0, x3, y3);
   5715    return closestPoint;
   5716  }
   5717  d3.interpolateRgb = d3_interpolateRgb;
   5718  function d3_interpolateRgb(a, b) {
   5719    a = d3.rgb(a);
   5720    b = d3.rgb(b);
   5721    var ar = a.r, ag = a.g, ab = a.b, br = b.r - ar, bg = b.g - ag, bb = b.b - ab;
   5722    return function(t) {
   5723      return "#" + d3_rgb_hex(Math.round(ar + br * t)) + d3_rgb_hex(Math.round(ag + bg * t)) + d3_rgb_hex(Math.round(ab + bb * t));
   5724    };
   5725  }
   5726  d3.interpolateObject = d3_interpolateObject;
   5727  function d3_interpolateObject(a, b) {
   5728    var i = {}, c = {}, k;
   5729    for (k in a) {
   5730      if (k in b) {
   5731        i[k] = d3_interpolate(a[k], b[k]);
   5732      } else {
   5733        c[k] = a[k];
   5734      }
   5735    }
   5736    for (k in b) {
   5737      if (!(k in a)) {
   5738        c[k] = b[k];
   5739      }
   5740    }
   5741    return function(t) {
   5742      for (k in i) c[k] = i[k](t);
   5743      return c;
   5744    };
   5745  }
   5746  d3.interpolateNumber = d3_interpolateNumber;
   5747  function d3_interpolateNumber(a, b) {
   5748    a = +a, b = +b;
   5749    return function(t) {
   5750      return a * (1 - t) + b * t;
   5751    };
   5752  }
   5753  d3.interpolateString = d3_interpolateString;
   5754  function d3_interpolateString(a, b) {
   5755    var bi = d3_interpolate_numberA.lastIndex = d3_interpolate_numberB.lastIndex = 0, am, bm, bs, i = -1, s = [], q = [];
   5756    a = a + "", b = b + "";
   5757    while ((am = d3_interpolate_numberA.exec(a)) && (bm = d3_interpolate_numberB.exec(b))) {
   5758      if ((bs = bm.index) > bi) {
   5759        bs = b.slice(bi, bs);
   5760        if (s[i]) s[i] += bs; else s[++i] = bs;
   5761      }
   5762      if ((am = am[0]) === (bm = bm[0])) {
   5763        if (s[i]) s[i] += bm; else s[++i] = bm;
   5764      } else {
   5765        s[++i] = null;
   5766        q.push({
   5767          i: i,
   5768          x: d3_interpolateNumber(am, bm)
   5769        });
   5770      }
   5771      bi = d3_interpolate_numberB.lastIndex;
   5772    }
   5773    if (bi < b.length) {
   5774      bs = b.slice(bi);
   5775      if (s[i]) s[i] += bs; else s[++i] = bs;
   5776    }
   5777    return s.length < 2 ? q[0] ? (b = q[0].x, function(t) {
   5778      return b(t) + "";
   5779    }) : function() {
   5780      return b;
   5781    } : (b = q.length, function(t) {
   5782      for (var i = 0, o; i < b; ++i) s[(o = q[i]).i] = o.x(t);
   5783      return s.join("");
   5784    });
   5785  }
   5786  var d3_interpolate_numberA = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g, d3_interpolate_numberB = new RegExp(d3_interpolate_numberA.source, "g");
   5787  d3.interpolate = d3_interpolate;
   5788  function d3_interpolate(a, b) {
   5789    var i = d3.interpolators.length, f;
   5790    while (--i >= 0 && !(f = d3.interpolators[i](a, b))) ;
   5791    return f;
   5792  }
   5793  d3.interpolators = [ function(a, b) {
   5794    var t = typeof b;
   5795    return (t === "string" ? d3_rgb_names.has(b.toLowerCase()) || /^(#|rgb\(|hsl\()/i.test(b) ? d3_interpolateRgb : d3_interpolateString : b instanceof d3_color ? d3_interpolateRgb : Array.isArray(b) ? d3_interpolateArray : t === "object" && isNaN(b) ? d3_interpolateObject : d3_interpolateNumber)(a, b);
   5796  } ];
   5797  d3.interpolateArray = d3_interpolateArray;
   5798  function d3_interpolateArray(a, b) {
   5799    var x = [], c = [], na = a.length, nb = b.length, n0 = Math.min(a.length, b.length), i;
   5800    for (i = 0; i < n0; ++i) x.push(d3_interpolate(a[i], b[i]));
   5801    for (;i < na; ++i) c[i] = a[i];
   5802    for (;i < nb; ++i) c[i] = b[i];
   5803    return function(t) {
   5804      for (i = 0; i < n0; ++i) c[i] = x[i](t);
   5805      return c;
   5806    };
   5807  }
   5808  var d3_ease_default = function() {
   5809    return d3_identity;
   5810  };
   5811  var d3_ease = d3.map({
   5812    linear: d3_ease_default,
   5813    poly: d3_ease_poly,
   5814    quad: function() {
   5815      return d3_ease_quad;
   5816    },
   5817    cubic: function() {
   5818      return d3_ease_cubic;
   5819    },
   5820    sin: function() {
   5821      return d3_ease_sin;
   5822    },
   5823    exp: function() {
   5824      return d3_ease_exp;
   5825    },
   5826    circle: function() {
   5827      return d3_ease_circle;
   5828    },
   5829    elastic: d3_ease_elastic,
   5830    back: d3_ease_back,
   5831    bounce: function() {
   5832      return d3_ease_bounce;
   5833    }
   5834  });
   5835  var d3_ease_mode = d3.map({
   5836    "in": d3_identity,
   5837    out: d3_ease_reverse,
   5838    "in-out": d3_ease_reflect,
   5839    "out-in": function(f) {
   5840      return d3_ease_reflect(d3_ease_reverse(f));
   5841    }
   5842  });
   5843  d3.ease = function(name) {
   5844    var i = name.indexOf("-"), t = i >= 0 ? name.slice(0, i) : name, m = i >= 0 ? name.slice(i + 1) : "in";
   5845    t = d3_ease.get(t) || d3_ease_default;
   5846    m = d3_ease_mode.get(m) || d3_identity;
   5847    return d3_ease_clamp(m(t.apply(null, d3_arraySlice.call(arguments, 1))));
   5848  };
   5849  function d3_ease_clamp(f) {
   5850    return function(t) {
   5851      return t <= 0 ? 0 : t >= 1 ? 1 : f(t);
   5852    };
   5853  }
   5854  function d3_ease_reverse(f) {
   5855    return function(t) {
   5856      return 1 - f(1 - t);
   5857    };
   5858  }
   5859  function d3_ease_reflect(f) {
   5860    return function(t) {
   5861      return .5 * (t < .5 ? f(2 * t) : 2 - f(2 - 2 * t));
   5862    };
   5863  }
   5864  function d3_ease_quad(t) {
   5865    return t * t;
   5866  }
   5867  function d3_ease_cubic(t) {
   5868    return t * t * t;
   5869  }
   5870  function d3_ease_cubicInOut(t) {
   5871    if (t <= 0) return 0;
   5872    if (t >= 1) return 1;
   5873    var t2 = t * t, t3 = t2 * t;
   5874    return 4 * (t < .5 ? t3 : 3 * (t - t2) + t3 - .75);
   5875  }
   5876  function d3_ease_poly(e) {
   5877    return function(t) {
   5878      return Math.pow(t, e);
   5879    };
   5880  }
   5881  function d3_ease_sin(t) {
   5882    return 1 - Math.cos(t * halfπ);
   5883  }
   5884  function d3_ease_exp(t) {
   5885    return Math.pow(2, 10 * (t - 1));
   5886  }
   5887  function d3_ease_circle(t) {
   5888    return 1 - Math.sqrt(1 - t * t);
   5889  }
   5890  function d3_ease_elastic(a, p) {
   5891    var s;
   5892    if (arguments.length < 2) p = .45;
   5893    if (arguments.length) s = p / τ * Math.asin(1 / a); else a = 1, s = p / 4;
   5894    return function(t) {
   5895      return 1 + a * Math.pow(2, -10 * t) * Math.sin((t - s) * τ / p);
   5896    };
   5897  }
   5898  function d3_ease_back(s) {
   5899    if (!s) s = 1.70158;
   5900    return function(t) {
   5901      return t * t * ((s + 1) * t - s);
   5902    };
   5903  }
   5904  function d3_ease_bounce(t) {
   5905    return t < 1 / 2.75 ? 7.5625 * t * t : t < 2 / 2.75 ? 7.5625 * (t -= 1.5 / 2.75) * t + .75 : t < 2.5 / 2.75 ? 7.5625 * (t -= 2.25 / 2.75) * t + .9375 : 7.5625 * (t -= 2.625 / 2.75) * t + .984375;
   5906  }
   5907  d3.interpolateHcl = d3_interpolateHcl;
   5908  function d3_interpolateHcl(a, b) {
   5909    a = d3.hcl(a);
   5910    b = d3.hcl(b);
   5911    var ah = a.h, ac = a.c, al = a.l, bh = b.h - ah, bc = b.c - ac, bl = b.l - al;
   5912    if (isNaN(bc)) bc = 0, ac = isNaN(ac) ? b.c : ac;
   5913    if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
   5914    return function(t) {
   5915      return d3_hcl_lab(ah + bh * t, ac + bc * t, al + bl * t) + "";
   5916    };
   5917  }
   5918  d3.interpolateHsl = d3_interpolateHsl;
   5919  function d3_interpolateHsl(a, b) {
   5920    a = d3.hsl(a);
   5921    b = d3.hsl(b);
   5922    var ah = a.h, as = a.s, al = a.l, bh = b.h - ah, bs = b.s - as, bl = b.l - al;
   5923    if (isNaN(bs)) bs = 0, as = isNaN(as) ? b.s : as;
   5924    if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
   5925    return function(t) {
   5926      return d3_hsl_rgb(ah + bh * t, as + bs * t, al + bl * t) + "";
   5927    };
   5928  }
   5929  d3.interpolateLab = d3_interpolateLab;
   5930  function d3_interpolateLab(a, b) {
   5931    a = d3.lab(a);
   5932    b = d3.lab(b);
   5933    var al = a.l, aa = a.a, ab = a.b, bl = b.l - al, ba = b.a - aa, bb = b.b - ab;
   5934    return function(t) {
   5935      return d3_lab_rgb(al + bl * t, aa + ba * t, ab + bb * t) + "";
   5936    };
   5937  }
   5938  d3.interpolateRound = d3_interpolateRound;
   5939  function d3_interpolateRound(a, b) {
   5940    b -= a;
   5941    return function(t) {
   5942      return Math.round(a + b * t);
   5943    };
   5944  }
   5945  d3.transform = function(string) {
   5946    var g = d3_document.createElementNS(d3.ns.prefix.svg, "g");
   5947    return (d3.transform = function(string) {
   5948      if (string != null) {
   5949        g.setAttribute("transform", string);
   5950        var t = g.transform.baseVal.consolidate();
   5951      }
   5952      return new d3_transform(t ? t.matrix : d3_transformIdentity);
   5953    })(string);
   5954  };
   5955  function d3_transform(m) {
   5956    var r0 = [ m.a, m.b ], r1 = [ m.c, m.d ], kx = d3_transformNormalize(r0), kz = d3_transformDot(r0, r1), ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) || 0;
   5957    if (r0[0] * r1[1] < r1[0] * r0[1]) {
   5958      r0[0] *= -1;
   5959      r0[1] *= -1;
   5960      kx *= -1;
   5961      kz *= -1;
   5962    }
   5963    this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_degrees;
   5964    this.translate = [ m.e, m.f ];
   5965    this.scale = [ kx, ky ];
   5966    this.skew = ky ? Math.atan2(kz, ky) * d3_degrees : 0;
   5967  }
   5968  d3_transform.prototype.toString = function() {
   5969    return "translate(" + this.translate + ")rotate(" + this.rotate + ")skewX(" + this.skew + ")scale(" + this.scale + ")";
   5970  };
   5971  function d3_transformDot(a, b) {
   5972    return a[0] * b[0] + a[1] * b[1];
   5973  }
   5974  function d3_transformNormalize(a) {
   5975    var k = Math.sqrt(d3_transformDot(a, a));
   5976    if (k) {
   5977      a[0] /= k;
   5978      a[1] /= k;
   5979    }
   5980    return k;
   5981  }
   5982  function d3_transformCombine(a, b, k) {
   5983    a[0] += k * b[0];
   5984    a[1] += k * b[1];
   5985    return a;
   5986  }
   5987  var d3_transformIdentity = {
   5988    a: 1,
   5989    b: 0,
   5990    c: 0,
   5991    d: 1,
   5992    e: 0,
   5993    f: 0
   5994  };
   5995  d3.interpolateTransform = d3_interpolateTransform;
   5996  function d3_interpolateTransformPop(s) {
   5997    return s.length ? s.pop() + "," : "";
   5998  }
   5999  function d3_interpolateTranslate(ta, tb, s, q) {
   6000    if (ta[0] !== tb[0] || ta[1] !== tb[1]) {
   6001      var i = s.push("translate(", null, ",", null, ")");
   6002      q.push({
   6003        i: i - 4,
   6004        x: d3_interpolateNumber(ta[0], tb[0])
   6005      }, {
   6006        i: i - 2,
   6007        x: d3_interpolateNumber(ta[1], tb[1])
   6008      });
   6009    } else if (tb[0] || tb[1]) {
   6010      s.push("translate(" + tb + ")");
   6011    }
   6012  }
   6013  function d3_interpolateRotate(ra, rb, s, q) {
   6014    if (ra !== rb) {
   6015      if (ra - rb > 180) rb += 360; else if (rb - ra > 180) ra += 360;
   6016      q.push({
   6017        i: s.push(d3_interpolateTransformPop(s) + "rotate(", null, ")") - 2,
   6018        x: d3_interpolateNumber(ra, rb)
   6019      });
   6020    } else if (rb) {
   6021      s.push(d3_interpolateTransformPop(s) + "rotate(" + rb + ")");
   6022    }
   6023  }
   6024  function d3_interpolateSkew(wa, wb, s, q) {
   6025    if (wa !== wb) {
   6026      q.push({
   6027        i: s.push(d3_interpolateTransformPop(s) + "skewX(", null, ")") - 2,
   6028        x: d3_interpolateNumber(wa, wb)
   6029      });
   6030    } else if (wb) {
   6031      s.push(d3_interpolateTransformPop(s) + "skewX(" + wb + ")");
   6032    }
   6033  }
   6034  function d3_interpolateScale(ka, kb, s, q) {
   6035    if (ka[0] !== kb[0] || ka[1] !== kb[1]) {
   6036      var i = s.push(d3_interpolateTransformPop(s) + "scale(", null, ",", null, ")");
   6037      q.push({
   6038        i: i - 4,
   6039        x: d3_interpolateNumber(ka[0], kb[0])
   6040      }, {
   6041        i: i - 2,
   6042        x: d3_interpolateNumber(ka[1], kb[1])
   6043      });
   6044    } else if (kb[0] !== 1 || kb[1] !== 1) {
   6045      s.push(d3_interpolateTransformPop(s) + "scale(" + kb + ")");
   6046    }
   6047  }
   6048  function d3_interpolateTransform(a, b) {
   6049    var s = [], q = [];
   6050    a = d3.transform(a), b = d3.transform(b);
   6051    d3_interpolateTranslate(a.translate, b.translate, s, q);
   6052    d3_interpolateRotate(a.rotate, b.rotate, s, q);
   6053    d3_interpolateSkew(a.skew, b.skew, s, q);
   6054    d3_interpolateScale(a.scale, b.scale, s, q);
   6055    a = b = null;
   6056    return function(t) {
   6057      var i = -1, n = q.length, o;
   6058      while (++i < n) s[(o = q[i]).i] = o.x(t);
   6059      return s.join("");
   6060    };
   6061  }
   6062  function d3_uninterpolateNumber(a, b) {
   6063    b = (b -= a = +a) || 1 / b;
   6064    return function(x) {
   6065      return (x - a) / b;
   6066    };
   6067  }
   6068  function d3_uninterpolateClamp(a, b) {
   6069    b = (b -= a = +a) || 1 / b;
   6070    return function(x) {
   6071      return Math.max(0, Math.min(1, (x - a) / b));
   6072    };
   6073  }
   6074  d3.layout = {};
   6075  d3.layout.bundle = function() {
   6076    return function(links) {
   6077      var paths = [], i = -1, n = links.length;
   6078      while (++i < n) paths.push(d3_layout_bundlePath(links[i]));
   6079      return paths;
   6080    };
   6081  };
   6082  function d3_layout_bundlePath(link) {
   6083    var start = link.source, end = link.target, lca = d3_layout_bundleLeastCommonAncestor(start, end), points = [ start ];
   6084    while (start !== lca) {
   6085      start = start.parent;
   6086      points.push(start);
   6087    }
   6088    var k = points.length;
   6089    while (end !== lca) {
   6090      points.splice(k, 0, end);
   6091      end = end.parent;
   6092    }
   6093    return points;
   6094  }
   6095  function d3_layout_bundleAncestors(node) {
   6096    var ancestors = [], parent = node.parent;
   6097    while (parent != null) {
   6098      ancestors.push(node);
   6099      node = parent;
   6100      parent = parent.parent;
   6101    }
   6102    ancestors.push(node);
   6103    return ancestors;
   6104  }
   6105  function d3_layout_bundleLeastCommonAncestor(a, b) {
   6106    if (a === b) return a;
   6107    var aNodes = d3_layout_bundleAncestors(a), bNodes = d3_layout_bundleAncestors(b), aNode = aNodes.pop(), bNode = bNodes.pop(), sharedNode = null;
   6108    while (aNode === bNode) {
   6109      sharedNode = aNode;
   6110      aNode = aNodes.pop();
   6111      bNode = bNodes.pop();
   6112    }
   6113    return sharedNode;
   6114  }
   6115  d3.layout.chord = function() {
   6116    var chord = {}, chords, groups, matrix, n, padding = 0, sortGroups, sortSubgroups, sortChords;
   6117    function relayout() {
   6118      var subgroups = {}, groupSums = [], groupIndex = d3.range(n), subgroupIndex = [], k, x, x0, i, j;
   6119      chords = [];
   6120      groups = [];
   6121      k = 0, i = -1;
   6122      while (++i < n) {
   6123        x = 0, j = -1;
   6124        while (++j < n) {
   6125          x += matrix[i][j];
   6126        }
   6127        groupSums.push(x);
   6128        subgroupIndex.push(d3.range(n));
   6129        k += x;
   6130      }
   6131      if (sortGroups) {
   6132        groupIndex.sort(function(a, b) {
   6133          return sortGroups(groupSums[a], groupSums[b]);
   6134        });
   6135      }
   6136      if (sortSubgroups) {
   6137        subgroupIndex.forEach(function(d, i) {
   6138          d.sort(function(a, b) {
   6139            return sortSubgroups(matrix[i][a], matrix[i][b]);
   6140          });
   6141        });
   6142      }
   6143      k = (τ - padding * n) / k;
   6144      x = 0, i = -1;
   6145      while (++i < n) {
   6146        x0 = x, j = -1;
   6147        while (++j < n) {
   6148          var di = groupIndex[i], dj = subgroupIndex[di][j], v = matrix[di][dj], a0 = x, a1 = x += v * k;
   6149          subgroups[di + "-" + dj] = {
   6150            index: di,
   6151            subindex: dj,
   6152            startAngle: a0,
   6153            endAngle: a1,
   6154            value: v
   6155          };
   6156        }
   6157        groups[di] = {
   6158          index: di,
   6159          startAngle: x0,
   6160          endAngle: x,
   6161          value: groupSums[di]
   6162        };
   6163        x += padding;
   6164      }
   6165      i = -1;
   6166      while (++i < n) {
   6167        j = i - 1;
   6168        while (++j < n) {
   6169          var source = subgroups[i + "-" + j], target = subgroups[j + "-" + i];
   6170          if (source.value || target.value) {
   6171            chords.push(source.value < target.value ? {
   6172              source: target,
   6173              target: source
   6174            } : {
   6175              source: source,
   6176              target: target
   6177            });
   6178          }
   6179        }
   6180      }
   6181      if (sortChords) resort();
   6182    }
   6183    function resort() {
   6184      chords.sort(function(a, b) {
   6185        return sortChords((a.source.value + a.target.value) / 2, (b.source.value + b.target.value) / 2);
   6186      });
   6187    }
   6188    chord.matrix = function(x) {
   6189      if (!arguments.length) return matrix;
   6190      n = (matrix = x) && matrix.length;
   6191      chords = groups = null;
   6192      return chord;
   6193    };
   6194    chord.padding = function(x) {
   6195      if (!arguments.length) return padding;
   6196      padding = x;
   6197      chords = groups = null;
   6198      return chord;
   6199    };
   6200    chord.sortGroups = function(x) {
   6201      if (!arguments.length) return sortGroups;
   6202      sortGroups = x;
   6203      chords = groups = null;
   6204      return chord;
   6205    };
   6206    chord.sortSubgroups = function(x) {
   6207      if (!arguments.length) return sortSubgroups;
   6208      sortSubgroups = x;
   6209      chords = null;
   6210      return chord;
   6211    };
   6212    chord.sortChords = function(x) {
   6213      if (!arguments.length) return sortChords;
   6214      sortChords = x;
   6215      if (chords) resort();
   6216      return chord;
   6217    };
   6218    chord.chords = function() {
   6219      if (!chords) relayout();
   6220      return chords;
   6221    };
   6222    chord.groups = function() {
   6223      if (!groups) relayout();
   6224      return groups;
   6225    };
   6226    return chord;
   6227  };
   6228  d3.layout.force = function() {
   6229    var force = {}, event = d3.dispatch("start", "tick", "end"), timer, size = [ 1, 1 ], drag, alpha, friction = .9, linkDistance = d3_layout_forceLinkDistance, linkStrength = d3_layout_forceLinkStrength, charge = -30, chargeDistance2 = d3_layout_forceChargeDistance2, gravity = .1, theta2 = .64, nodes = [], links = [], distances, strengths, charges;
   6230    function repulse(node) {
   6231      return function(quad, x1, _, x2) {
   6232        if (quad.point !== node) {
   6233          var dx = quad.cx - node.x, dy = quad.cy - node.y, dw = x2 - x1, dn = dx * dx + dy * dy;
   6234          if (dw * dw / theta2 < dn) {
   6235            if (dn < chargeDistance2) {
   6236              var k = quad.charge / dn;
   6237              node.px -= dx * k;
   6238              node.py -= dy * k;
   6239            }
   6240            return true;
   6241          }
   6242          if (quad.point && dn && dn < chargeDistance2) {
   6243            var k = quad.pointCharge / dn;
   6244            node.px -= dx * k;
   6245            node.py -= dy * k;
   6246          }
   6247        }
   6248        return !quad.charge;
   6249      };
   6250    }
   6251    force.tick = function() {
   6252      if ((alpha *= .99) < .005) {
   6253        timer = null;
   6254        event.end({
   6255          type: "end",
   6256          alpha: alpha = 0
   6257        });
   6258        return true;
   6259      }
   6260      var n = nodes.length, m = links.length, q, i, o, s, t, l, k, x, y;
   6261      for (i = 0; i < m; ++i) {
   6262        o = links[i];
   6263        s = o.source;
   6264        t = o.target;
   6265        x = t.x - s.x;
   6266        y = t.y - s.y;
   6267        if (l = x * x + y * y) {
   6268          l = alpha * strengths[i] * ((l = Math.sqrt(l)) - distances[i]) / l;
   6269          x *= l;
   6270          y *= l;
   6271          t.x -= x * (k = s.weight + t.weight ? s.weight / (s.weight + t.weight) : .5);
   6272          t.y -= y * k;
   6273          s.x += x * (k = 1 - k);
   6274          s.y += y * k;
   6275        }
   6276      }
   6277      if (k = alpha * gravity) {
   6278        x = size[0] / 2;
   6279        y = size[1] / 2;
   6280        i = -1;
   6281        if (k) while (++i < n) {
   6282          o = nodes[i];
   6283          o.x += (x - o.x) * k;
   6284          o.y += (y - o.y) * k;
   6285        }
   6286      }
   6287      if (charge) {
   6288        d3_layout_forceAccumulate(q = d3.geom.quadtree(nodes), alpha, charges);
   6289        i = -1;
   6290        while (++i < n) {
   6291          if (!(o = nodes[i]).fixed) {
   6292            q.visit(repulse(o));
   6293          }
   6294        }
   6295      }
   6296      i = -1;
   6297      while (++i < n) {
   6298        o = nodes[i];
   6299        if (o.fixed) {
   6300          o.x = o.px;
   6301          o.y = o.py;
   6302        } else {
   6303          o.x -= (o.px - (o.px = o.x)) * friction;
   6304          o.y -= (o.py - (o.py = o.y)) * friction;
   6305        }
   6306      }
   6307      event.tick({
   6308        type: "tick",
   6309        alpha: alpha
   6310      });
   6311    };
   6312    force.nodes = function(x) {
   6313      if (!arguments.length) return nodes;
   6314      nodes = x;
   6315      return force;
   6316    };
   6317    force.links = function(x) {
   6318      if (!arguments.length) return links;
   6319      links = x;
   6320      return force;
   6321    };
   6322    force.size = function(x) {
   6323      if (!arguments.length) return size;
   6324      size = x;
   6325      return force;
   6326    };
   6327    force.linkDistance = function(x) {
   6328      if (!arguments.length) return linkDistance;
   6329      linkDistance = typeof x === "function" ? x : +x;
   6330      return force;
   6331    };
   6332    force.distance = force.linkDistance;
   6333    force.linkStrength = function(x) {
   6334      if (!arguments.length) return linkStrength;
   6335      linkStrength = typeof x === "function" ? x : +x;
   6336      return force;
   6337    };
   6338    force.friction = function(x) {
   6339      if (!arguments.length) return friction;
   6340      friction = +x;
   6341      return force;
   6342    };
   6343    force.charge = function(x) {
   6344      if (!arguments.length) return charge;
   6345      charge = typeof x === "function" ? x : +x;
   6346      return force;
   6347    };
   6348    force.chargeDistance = function(x) {
   6349      if (!arguments.length) return Math.sqrt(chargeDistance2);
   6350      chargeDistance2 = x * x;
   6351      return force;
   6352    };
   6353    force.gravity = function(x) {
   6354      if (!arguments.length) return gravity;
   6355      gravity = +x;
   6356      return force;
   6357    };
   6358    force.theta = function(x) {
   6359      if (!arguments.length) return Math.sqrt(theta2);
   6360      theta2 = x * x;
   6361      return force;
   6362    };
   6363    force.alpha = function(x) {
   6364      if (!arguments.length) return alpha;
   6365      x = +x;
   6366      if (alpha) {
   6367        if (x > 0) {
   6368          alpha = x;
   6369        } else {
   6370          timer.c = null, timer.t = NaN, timer = null;
   6371          event.end({
   6372            type: "end",
   6373            alpha: alpha = 0
   6374          });
   6375        }
   6376      } else if (x > 0) {
   6377        event.start({
   6378          type: "start",
   6379          alpha: alpha = x
   6380        });
   6381        timer = d3_timer(force.tick);
   6382      }
   6383      return force;
   6384    };
   6385    force.start = function() {
   6386      var i, n = nodes.length, m = links.length, w = size[0], h = size[1], neighbors, o;
   6387      for (i = 0; i < n; ++i) {
   6388        (o = nodes[i]).index = i;
   6389        o.weight = 0;
   6390      }
   6391      for (i = 0; i < m; ++i) {
   6392        o = links[i];
   6393        if (typeof o.source == "number") o.source = nodes[o.source];
   6394        if (typeof o.target == "number") o.target = nodes[o.target];
   6395        ++o.source.weight;
   6396        ++o.target.weight;
   6397      }
   6398      for (i = 0; i < n; ++i) {
   6399        o = nodes[i];
   6400        if (isNaN(o.x)) o.x = position("x", w);
   6401        if (isNaN(o.y)) o.y = position("y", h);
   6402        if (isNaN(o.px)) o.px = o.x;
   6403        if (isNaN(o.py)) o.py = o.y;
   6404      }
   6405      distances = [];
   6406      if (typeof linkDistance === "function") for (i = 0; i < m; ++i) distances[i] = +linkDistance.call(this, links[i], i); else for (i = 0; i < m; ++i) distances[i] = linkDistance;
   6407      strengths = [];
   6408      if (typeof linkStrength === "function") for (i = 0; i < m; ++i) strengths[i] = +linkStrength.call(this, links[i], i); else for (i = 0; i < m; ++i) strengths[i] = linkStrength;
   6409      charges = [];
   6410      if (typeof charge === "function") for (i = 0; i < n; ++i) charges[i] = +charge.call(this, nodes[i], i); else for (i = 0; i < n; ++i) charges[i] = charge;
   6411      function position(dimension, size) {
   6412        if (!neighbors) {
   6413          neighbors = new Array(n);
   6414          for (j = 0; j < n; ++j) {
   6415            neighbors[j] = [];
   6416          }
   6417          for (j = 0; j < m; ++j) {
   6418            var o = links[j];
   6419            neighbors[o.source.index].push(o.target);
   6420            neighbors[o.target.index].push(o.source);
   6421          }
   6422        }
   6423        var candidates = neighbors[i], j = -1, l = candidates.length, x;
   6424        while (++j < l) if (!isNaN(x = candidates[j][dimension])) return x;
   6425        return Math.random() * size;
   6426      }
   6427      return force.resume();
   6428    };
   6429    force.resume = function() {
   6430      return force.alpha(.1);
   6431    };
   6432    force.stop = function() {
   6433      return force.alpha(0);
   6434    };
   6435    force.drag = function() {
   6436      if (!drag) drag = d3.behavior.drag().origin(d3_identity).on("dragstart.force", d3_layout_forceDragstart).on("drag.force", dragmove).on("dragend.force", d3_layout_forceDragend);
   6437      if (!arguments.length) return drag;
   6438      this.on("mouseover.force", d3_layout_forceMouseover).on("mouseout.force", d3_layout_forceMouseout).call(drag);
   6439    };
   6440    function dragmove(d) {
   6441      d.px = d3.event.x, d.py = d3.event.y;
   6442      force.resume();
   6443    }
   6444    return d3.rebind(force, event, "on");
   6445  };
   6446  function d3_layout_forceDragstart(d) {
   6447    d.fixed |= 2;
   6448  }
   6449  function d3_layout_forceDragend(d) {
   6450    d.fixed &= ~6;
   6451  }
   6452  function d3_layout_forceMouseover(d) {
   6453    d.fixed |= 4;
   6454    d.px = d.x, d.py = d.y;
   6455  }
   6456  function d3_layout_forceMouseout(d) {
   6457    d.fixed &= ~4;
   6458  }
   6459  function d3_layout_forceAccumulate(quad, alpha, charges) {
   6460    var cx = 0, cy = 0;
   6461    quad.charge = 0;
   6462    if (!quad.leaf) {
   6463      var nodes = quad.nodes, n = nodes.length, i = -1, c;
   6464      while (++i < n) {
   6465        c = nodes[i];
   6466        if (c == null) continue;
   6467        d3_layout_forceAccumulate(c, alpha, charges);
   6468        quad.charge += c.charge;
   6469        cx += c.charge * c.cx;
   6470        cy += c.charge * c.cy;
   6471      }
   6472    }
   6473    if (quad.point) {
   6474      if (!quad.leaf) {
   6475        quad.point.x += Math.random() - .5;
   6476        quad.point.y += Math.random() - .5;
   6477      }
   6478      var k = alpha * charges[quad.point.index];
   6479      quad.charge += quad.pointCharge = k;
   6480      cx += k * quad.point.x;
   6481      cy += k * quad.point.y;
   6482    }
   6483    quad.cx = cx / quad.charge;
   6484    quad.cy = cy / quad.charge;
   6485  }
   6486  var d3_layout_forceLinkDistance = 20, d3_layout_forceLinkStrength = 1, d3_layout_forceChargeDistance2 = Infinity;
   6487  d3.layout.hierarchy = function() {
   6488    var sort = d3_layout_hierarchySort, children = d3_layout_hierarchyChildren, value = d3_layout_hierarchyValue;
   6489    function hierarchy(root) {
   6490      var stack = [ root ], nodes = [], node;
   6491      root.depth = 0;
   6492      while ((node = stack.pop()) != null) {
   6493        nodes.push(node);
   6494        if ((childs = children.call(hierarchy, node, node.depth)) && (n = childs.length)) {
   6495          var n, childs, child;
   6496          while (--n >= 0) {
   6497            stack.push(child = childs[n]);
   6498            child.parent = node;
   6499            child.depth = node.depth + 1;
   6500          }
   6501          if (value) node.value = 0;
   6502          node.children = childs;
   6503        } else {
   6504          if (value) node.value = +value.call(hierarchy, node, node.depth) || 0;
   6505          delete node.children;
   6506        }
   6507      }
   6508      d3_layout_hierarchyVisitAfter(root, function(node) {
   6509        var childs, parent;
   6510        if (sort && (childs = node.children)) childs.sort(sort);
   6511        if (value && (parent = node.parent)) parent.value += node.value;
   6512      });
   6513      return nodes;
   6514    }
   6515    hierarchy.sort = function(x) {
   6516      if (!arguments.length) return sort;
   6517      sort = x;
   6518      return hierarchy;
   6519    };
   6520    hierarchy.children = function(x) {
   6521      if (!arguments.length) return children;
   6522      children = x;
   6523      return hierarchy;
   6524    };
   6525    hierarchy.value = function(x) {
   6526      if (!arguments.length) return value;
   6527      value = x;
   6528      return hierarchy;
   6529    };
   6530    hierarchy.revalue = function(root) {
   6531      if (value) {
   6532        d3_layout_hierarchyVisitBefore(root, function(node) {
   6533          if (node.children) node.value = 0;
   6534        });
   6535        d3_layout_hierarchyVisitAfter(root, function(node) {
   6536          var parent;
   6537          if (!node.children) node.value = +value.call(hierarchy, node, node.depth) || 0;
   6538          if (parent = node.parent) parent.value += node.value;
   6539        });
   6540      }
   6541      return root;
   6542    };
   6543    return hierarchy;
   6544  };
   6545  function d3_layout_hierarchyRebind(object, hierarchy) {
   6546    d3.rebind(object, hierarchy, "sort", "children", "value");
   6547    object.nodes = object;
   6548    object.links = d3_layout_hierarchyLinks;
   6549    return object;
   6550  }
   6551  function d3_layout_hierarchyVisitBefore(node, callback) {
   6552    var nodes = [ node ];
   6553    while ((node = nodes.pop()) != null) {
   6554      callback(node);
   6555      if ((children = node.children) && (n = children.length)) {
   6556        var n, children;
   6557        while (--n >= 0) nodes.push(children[n]);
   6558      }
   6559    }
   6560  }
   6561  function d3_layout_hierarchyVisitAfter(node, callback) {
   6562    var nodes = [ node ], nodes2 = [];
   6563    while ((node = nodes.pop()) != null) {
   6564      nodes2.push(node);
   6565      if ((children = node.children) && (n = children.length)) {
   6566        var i = -1, n, children;
   6567        while (++i < n) nodes.push(children[i]);
   6568      }
   6569    }
   6570    while ((node = nodes2.pop()) != null) {
   6571      callback(node);
   6572    }
   6573  }
   6574  function d3_layout_hierarchyChildren(d) {
   6575    return d.children;
   6576  }
   6577  function d3_layout_hierarchyValue(d) {
   6578    return d.value;
   6579  }
   6580  function d3_layout_hierarchySort(a, b) {
   6581    return b.value - a.value;
   6582  }
   6583  function d3_layout_hierarchyLinks(nodes) {
   6584    return d3.merge(nodes.map(function(parent) {
   6585      return (parent.children || []).map(function(child) {
   6586        return {
   6587          source: parent,
   6588          target: child
   6589        };
   6590      });
   6591    }));
   6592  }
   6593  d3.layout.partition = function() {
   6594    var hierarchy = d3.layout.hierarchy(), size = [ 1, 1 ];
   6595    function position(node, x, dx, dy) {
   6596      var children = node.children;
   6597      node.x = x;
   6598      node.y = node.depth * dy;
   6599      node.dx = dx;
   6600      node.dy = dy;
   6601      if (children && (n = children.length)) {
   6602        var i = -1, n, c, d;
   6603        dx = node.value ? dx / node.value : 0;
   6604        while (++i < n) {
   6605          position(c = children[i], x, d = c.value * dx, dy);
   6606          x += d;
   6607        }
   6608      }
   6609    }
   6610    function depth(node) {
   6611      var children = node.children, d = 0;
   6612      if (children && (n = children.length)) {
   6613        var i = -1, n;
   6614        while (++i < n) d = Math.max(d, depth(children[i]));
   6615      }
   6616      return 1 + d;
   6617    }
   6618    function partition(d, i) {
   6619      var nodes = hierarchy.call(this, d, i);
   6620      position(nodes[0], 0, size[0], size[1] / depth(nodes[0]));
   6621      return nodes;
   6622    }
   6623    partition.size = function(x) {
   6624      if (!arguments.length) return size;
   6625      size = x;
   6626      return partition;
   6627    };
   6628    return d3_layout_hierarchyRebind(partition, hierarchy);
   6629  };
   6630  d3.layout.pie = function() {
   6631    var value = Number, sort = d3_layout_pieSortByValue, startAngle = 0, endAngle = τ, padAngle = 0;
   6632    function pie(data) {
   6633      var n = data.length, values = data.map(function(d, i) {
   6634        return +value.call(pie, d, i);
   6635      }), a = +(typeof startAngle === "function" ? startAngle.apply(this, arguments) : startAngle), da = (typeof endAngle === "function" ? endAngle.apply(this, arguments) : endAngle) - a, p = Math.min(Math.abs(da) / n, +(typeof padAngle === "function" ? padAngle.apply(this, arguments) : padAngle)), pa = p * (da < 0 ? -1 : 1), sum = d3.sum(values), k = sum ? (da - n * pa) / sum : 0, index = d3.range(n), arcs = [], v;
   6636      if (sort != null) index.sort(sort === d3_layout_pieSortByValue ? function(i, j) {
   6637        return values[j] - values[i];
   6638      } : function(i, j) {
   6639        return sort(data[i], data[j]);
   6640      });
   6641      index.forEach(function(i) {
   6642        arcs[i] = {
   6643          data: data[i],
   6644          value: v = values[i],
   6645          startAngle: a,
   6646          endAngle: a += v * k + pa,
   6647          padAngle: p
   6648        };
   6649      });
   6650      return arcs;
   6651    }
   6652    pie.value = function(_) {
   6653      if (!arguments.length) return value;
   6654      value = _;
   6655      return pie;
   6656    };
   6657    pie.sort = function(_) {
   6658      if (!arguments.length) return sort;
   6659      sort = _;
   6660      return pie;
   6661    };
   6662    pie.startAngle = function(_) {
   6663      if (!arguments.length) return startAngle;
   6664      startAngle = _;
   6665      return pie;
   6666    };
   6667    pie.endAngle = function(_) {
   6668      if (!arguments.length) return endAngle;
   6669      endAngle = _;
   6670      return pie;
   6671    };
   6672    pie.padAngle = function(_) {
   6673      if (!arguments.length) return padAngle;
   6674      padAngle = _;
   6675      return pie;
   6676    };
   6677    return pie;
   6678  };
   6679  var d3_layout_pieSortByValue = {};
   6680  d3.layout.stack = function() {
   6681    var values = d3_identity, order = d3_layout_stackOrderDefault, offset = d3_layout_stackOffsetZero, out = d3_layout_stackOut, x = d3_layout_stackX, y = d3_layout_stackY;
   6682    function stack(data, index) {
   6683      if (!(n = data.length)) return data;
   6684      var series = data.map(function(d, i) {
   6685        return values.call(stack, d, i);
   6686      });
   6687      var points = series.map(function(d) {
   6688        return d.map(function(v, i) {
   6689          return [ x.call(stack, v, i), y.call(stack, v, i) ];
   6690        });
   6691      });
   6692      var orders = order.call(stack, points, index);
   6693      series = d3.permute(series, orders);
   6694      points = d3.permute(points, orders);
   6695      var offsets = offset.call(stack, points, index);
   6696      var m = series[0].length, n, i, j, o;
   6697      for (j = 0; j < m; ++j) {
   6698        out.call(stack, series[0][j], o = offsets[j], points[0][j][1]);
   6699        for (i = 1; i < n; ++i) {
   6700          out.call(stack, series[i][j], o += points[i - 1][j][1], points[i][j][1]);
   6701        }
   6702      }
   6703      return data;
   6704    }
   6705    stack.values = function(x) {
   6706      if (!arguments.length) return values;
   6707      values = x;
   6708      return stack;
   6709    };
   6710    stack.order = function(x) {
   6711      if (!arguments.length) return order;
   6712      order = typeof x === "function" ? x : d3_layout_stackOrders.get(x) || d3_layout_stackOrderDefault;
   6713      return stack;
   6714    };
   6715    stack.offset = function(x) {
   6716      if (!arguments.length) return offset;
   6717      offset = typeof x === "function" ? x : d3_layout_stackOffsets.get(x) || d3_layout_stackOffsetZero;
   6718      return stack;
   6719    };
   6720    stack.x = function(z) {
   6721      if (!arguments.length) return x;
   6722      x = z;
   6723      return stack;
   6724    };
   6725    stack.y = function(z) {
   6726      if (!arguments.length) return y;
   6727      y = z;
   6728      return stack;
   6729    };
   6730    stack.out = function(z) {
   6731      if (!arguments.length) return out;
   6732      out = z;
   6733      return stack;
   6734    };
   6735    return stack;
   6736  };
   6737  function d3_layout_stackX(d) {
   6738    return d.x;
   6739  }
   6740  function d3_layout_stackY(d) {
   6741    return d.y;
   6742  }
   6743  function d3_layout_stackOut(d, y0, y) {
   6744    d.y0 = y0;
   6745    d.y = y;
   6746  }
   6747  var d3_layout_stackOrders = d3.map({
   6748    "inside-out": function(data) {
   6749      var n = data.length, i, j, max = data.map(d3_layout_stackMaxIndex), sums = data.map(d3_layout_stackReduceSum), index = d3.range(n).sort(function(a, b) {
   6750        return max[a] - max[b];
   6751      }), top = 0, bottom = 0, tops = [], bottoms = [];
   6752      for (i = 0; i < n; ++i) {
   6753        j = index[i];
   6754        if (top < bottom) {
   6755          top += sums[j];
   6756          tops.push(j);
   6757        } else {
   6758          bottom += sums[j];
   6759          bottoms.push(j);
   6760        }
   6761      }
   6762      return bottoms.reverse().concat(tops);
   6763    },
   6764    reverse: function(data) {
   6765      return d3.range(data.length).reverse();
   6766    },
   6767    "default": d3_layout_stackOrderDefault
   6768  });
   6769  var d3_layout_stackOffsets = d3.map({
   6770    silhouette: function(data) {
   6771      var n = data.length, m = data[0].length, sums = [], max = 0, i, j, o, y0 = [];
   6772      for (j = 0; j < m; ++j) {
   6773        for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
   6774        if (o > max) max = o;
   6775        sums.push(o);
   6776      }
   6777      for (j = 0; j < m; ++j) {
   6778        y0[j] = (max - sums[j]) / 2;
   6779      }
   6780      return y0;
   6781    },
   6782    wiggle: function(data) {
   6783      var n = data.length, x = data[0], m = x.length, i, j, k, s1, s2, s3, dx, o, o0, y0 = [];
   6784      y0[0] = o = o0 = 0;
   6785      for (j = 1; j < m; ++j) {
   6786        for (i = 0, s1 = 0; i < n; ++i) s1 += data[i][j][1];
   6787        for (i = 0, s2 = 0, dx = x[j][0] - x[j - 1][0]; i < n; ++i) {
   6788          for (k = 0, s3 = (data[i][j][1] - data[i][j - 1][1]) / (2 * dx); k < i; ++k) {
   6789            s3 += (data[k][j][1] - data[k][j - 1][1]) / dx;
   6790          }
   6791          s2 += s3 * data[i][j][1];
   6792        }
   6793        y0[j] = o -= s1 ? s2 / s1 * dx : 0;
   6794        if (o < o0) o0 = o;
   6795      }
   6796      for (j = 0; j < m; ++j) y0[j] -= o0;
   6797      return y0;
   6798    },
   6799    expand: function(data) {
   6800      var n = data.length, m = data[0].length, k = 1 / n, i, j, o, y0 = [];
   6801      for (j = 0; j < m; ++j) {
   6802        for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
   6803        if (o) for (i = 0; i < n; i++) data[i][j][1] /= o; else for (i = 0; i < n; i++) data[i][j][1] = k;
   6804      }
   6805      for (j = 0; j < m; ++j) y0[j] = 0;
   6806      return y0;
   6807    },
   6808    zero: d3_layout_stackOffsetZero
   6809  });
   6810  function d3_layout_stackOrderDefault(data) {
   6811    return d3.range(data.length);
   6812  }
   6813  function d3_layout_stackOffsetZero(data) {
   6814    var j = -1, m = data[0].length, y0 = [];
   6815    while (++j < m) y0[j] = 0;
   6816    return y0;
   6817  }
   6818  function d3_layout_stackMaxIndex(array) {
   6819    var i = 1, j = 0, v = array[0][1], k, n = array.length;
   6820    for (;i < n; ++i) {
   6821      if ((k = array[i][1]) > v) {
   6822        j = i;
   6823        v = k;
   6824      }
   6825    }
   6826    return j;
   6827  }
   6828  function d3_layout_stackReduceSum(d) {
   6829    return d.reduce(d3_layout_stackSum, 0);
   6830  }
   6831  function d3_layout_stackSum(p, d) {
   6832    return p + d[1];
   6833  }
   6834  d3.layout.histogram = function() {
   6835    var frequency = true, valuer = Number, ranger = d3_layout_histogramRange, binner = d3_layout_histogramBinSturges;
   6836    function histogram(data, i) {
   6837      var bins = [], values = data.map(valuer, this), range = ranger.call(this, values, i), thresholds = binner.call(this, range, values, i), bin, i = -1, n = values.length, m = thresholds.length - 1, k = frequency ? 1 : 1 / n, x;
   6838      while (++i < m) {
   6839        bin = bins[i] = [];
   6840        bin.dx = thresholds[i + 1] - (bin.x = thresholds[i]);
   6841        bin.y = 0;
   6842      }
   6843      if (m > 0) {
   6844        i = -1;
   6845        while (++i < n) {
   6846          x = values[i];
   6847          if (x >= range[0] && x <= range[1]) {
   6848            bin = bins[d3.bisect(thresholds, x, 1, m) - 1];
   6849            bin.y += k;
   6850            bin.push(data[i]);
   6851          }
   6852        }
   6853      }
   6854      return bins;
   6855    }
   6856    histogram.value = function(x) {
   6857      if (!arguments.length) return valuer;
   6858      valuer = x;
   6859      return histogram;
   6860    };
   6861    histogram.range = function(x) {
   6862      if (!arguments.length) return ranger;
   6863      ranger = d3_functor(x);
   6864      return histogram;
   6865    };
   6866    histogram.bins = function(x) {
   6867      if (!arguments.length) return binner;
   6868      binner = typeof x === "number" ? function(range) {
   6869        return d3_layout_histogramBinFixed(range, x);
   6870      } : d3_functor(x);
   6871      return histogram;
   6872    };
   6873    histogram.frequency = function(x) {
   6874      if (!arguments.length) return frequency;
   6875      frequency = !!x;
   6876      return histogram;
   6877    };
   6878    return histogram;
   6879  };
   6880  function d3_layout_histogramBinSturges(range, values) {
   6881    return d3_layout_histogramBinFixed(range, Math.ceil(Math.log(values.length) / Math.LN2 + 1));
   6882  }
   6883  function d3_layout_histogramBinFixed(range, n) {
   6884    var x = -1, b = +range[0], m = (range[1] - b) / n, f = [];
   6885    while (++x <= n) f[x] = m * x + b;
   6886    return f;
   6887  }
   6888  function d3_layout_histogramRange(values) {
   6889    return [ d3.min(values), d3.max(values) ];
   6890  }
   6891  d3.layout.pack = function() {
   6892    var hierarchy = d3.layout.hierarchy().sort(d3_layout_packSort), padding = 0, size = [ 1, 1 ], radius;
   6893    function pack(d, i) {
   6894      var nodes = hierarchy.call(this, d, i), root = nodes[0], w = size[0], h = size[1], r = radius == null ? Math.sqrt : typeof radius === "function" ? radius : function() {
   6895        return radius;
   6896      };
   6897      root.x = root.y = 0;
   6898      d3_layout_hierarchyVisitAfter(root, function(d) {
   6899        d.r = +r(d.value);
   6900      });
   6901      d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
   6902      if (padding) {
   6903        var dr = padding * (radius ? 1 : Math.max(2 * root.r / w, 2 * root.r / h)) / 2;
   6904        d3_layout_hierarchyVisitAfter(root, function(d) {
   6905          d.r += dr;
   6906        });
   6907        d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
   6908        d3_layout_hierarchyVisitAfter(root, function(d) {
   6909          d.r -= dr;
   6910        });
   6911      }
   6912      d3_layout_packTransform(root, w / 2, h / 2, radius ? 1 : 1 / Math.max(2 * root.r / w, 2 * root.r / h));
   6913      return nodes;
   6914    }
   6915    pack.size = function(_) {
   6916      if (!arguments.length) return size;
   6917      size = _;
   6918      return pack;
   6919    };
   6920    pack.radius = function(_) {
   6921      if (!arguments.length) return radius;
   6922      radius = _ == null || typeof _ === "function" ? _ : +_;
   6923      return pack;
   6924    };
   6925    pack.padding = function(_) {
   6926      if (!arguments.length) return padding;
   6927      padding = +_;
   6928      return pack;
   6929    };
   6930    return d3_layout_hierarchyRebind(pack, hierarchy);
   6931  };
   6932  function d3_layout_packSort(a, b) {
   6933    return a.value - b.value;
   6934  }
   6935  function d3_layout_packInsert(a, b) {
   6936    var c = a._pack_next;
   6937    a._pack_next = b;
   6938    b._pack_prev = a;
   6939    b._pack_next = c;
   6940    c._pack_prev = b;
   6941  }
   6942  function d3_layout_packSplice(a, b) {
   6943    a._pack_next = b;
   6944    b._pack_prev = a;
   6945  }
   6946  function d3_layout_packIntersects(a, b) {
   6947    var dx = b.x - a.x, dy = b.y - a.y, dr = a.r + b.r;
   6948    return .999 * dr * dr > dx * dx + dy * dy;
   6949  }
   6950  function d3_layout_packSiblings(node) {
   6951    if (!(nodes = node.children) || !(n = nodes.length)) return;
   6952    var nodes, xMin = Infinity, xMax = -Infinity, yMin = Infinity, yMax = -Infinity, a, b, c, i, j, k, n;
   6953    function bound(node) {
   6954      xMin = Math.min(node.x - node.r, xMin);
   6955      xMax = Math.max(node.x + node.r, xMax);
   6956      yMin = Math.min(node.y - node.r, yMin);
   6957      yMax = Math.max(node.y + node.r, yMax);
   6958    }
   6959    nodes.forEach(d3_layout_packLink);
   6960    a = nodes[0];
   6961    a.x = -a.r;
   6962    a.y = 0;
   6963    bound(a);
   6964    if (n > 1) {
   6965      b = nodes[1];
   6966      b.x = b.r;
   6967      b.y = 0;
   6968      bound(b);
   6969      if (n > 2) {
   6970        c = nodes[2];
   6971        d3_layout_packPlace(a, b, c);
   6972        bound(c);
   6973        d3_layout_packInsert(a, c);
   6974        a._pack_prev = c;
   6975        d3_layout_packInsert(c, b);
   6976        b = a._pack_next;
   6977        for (i = 3; i < n; i++) {
   6978          d3_layout_packPlace(a, b, c = nodes[i]);
   6979          var isect = 0, s1 = 1, s2 = 1;
   6980          for (j = b._pack_next; j !== b; j = j._pack_next, s1++) {
   6981            if (d3_layout_packIntersects(j, c)) {
   6982              isect = 1;
   6983              break;
   6984            }
   6985          }
   6986          if (isect == 1) {
   6987            for (k = a._pack_prev; k !== j._pack_prev; k = k._pack_prev, s2++) {
   6988              if (d3_layout_packIntersects(k, c)) {
   6989                break;
   6990              }
   6991            }
   6992          }
   6993          if (isect) {
   6994            if (s1 < s2 || s1 == s2 && b.r < a.r) d3_layout_packSplice(a, b = j); else d3_layout_packSplice(a = k, b);
   6995            i--;
   6996          } else {
   6997            d3_layout_packInsert(a, c);
   6998            b = c;
   6999            bound(c);
   7000          }
   7001        }
   7002      }
   7003    }
   7004    var cx = (xMin + xMax) / 2, cy = (yMin + yMax) / 2, cr = 0;
   7005    for (i = 0; i < n; i++) {
   7006      c = nodes[i];
   7007      c.x -= cx;
   7008      c.y -= cy;
   7009      cr = Math.max(cr, c.r + Math.sqrt(c.x * c.x + c.y * c.y));
   7010    }
   7011    node.r = cr;
   7012    nodes.forEach(d3_layout_packUnlink);
   7013  }
   7014  function d3_layout_packLink(node) {
   7015    node._pack_next = node._pack_prev = node;
   7016  }
   7017  function d3_layout_packUnlink(node) {
   7018    delete node._pack_next;
   7019    delete node._pack_prev;
   7020  }
   7021  function d3_layout_packTransform(node, x, y, k) {
   7022    var children = node.children;
   7023    node.x = x += k * node.x;
   7024    node.y = y += k * node.y;
   7025    node.r *= k;
   7026    if (children) {
   7027      var i = -1, n = children.length;
   7028      while (++i < n) d3_layout_packTransform(children[i], x, y, k);
   7029    }
   7030  }
   7031  function d3_layout_packPlace(a, b, c) {
   7032    var db = a.r + c.r, dx = b.x - a.x, dy = b.y - a.y;
   7033    if (db && (dx || dy)) {
   7034      var da = b.r + c.r, dc = dx * dx + dy * dy;
   7035      da *= da;
   7036      db *= db;
   7037      var x = .5 + (db - da) / (2 * dc), y = Math.sqrt(Math.max(0, 2 * da * (db + dc) - (db -= dc) * db - da * da)) / (2 * dc);
   7038      c.x = a.x + x * dx + y * dy;
   7039      c.y = a.y + x * dy - y * dx;
   7040    } else {
   7041      c.x = a.x + db;
   7042      c.y = a.y;
   7043    }
   7044  }
   7045  d3.layout.tree = function() {
   7046    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = null;
   7047    function tree(d, i) {
   7048      var nodes = hierarchy.call(this, d, i), root0 = nodes[0], root1 = wrapTree(root0);
   7049      d3_layout_hierarchyVisitAfter(root1, firstWalk), root1.parent.m = -root1.z;
   7050      d3_layout_hierarchyVisitBefore(root1, secondWalk);
   7051      if (nodeSize) d3_layout_hierarchyVisitBefore(root0, sizeNode); else {
   7052        var left = root0, right = root0, bottom = root0;
   7053        d3_layout_hierarchyVisitBefore(root0, function(node) {
   7054          if (node.x < left.x) left = node;
   7055          if (node.x > right.x) right = node;
   7056          if (node.depth > bottom.depth) bottom = node;
   7057        });
   7058        var tx = separation(left, right) / 2 - left.x, kx = size[0] / (right.x + separation(right, left) / 2 + tx), ky = size[1] / (bottom.depth || 1);
   7059        d3_layout_hierarchyVisitBefore(root0, function(node) {
   7060          node.x = (node.x + tx) * kx;
   7061          node.y = node.depth * ky;
   7062        });
   7063      }
   7064      return nodes;
   7065    }
   7066    function wrapTree(root0) {
   7067      var root1 = {
   7068        A: null,
   7069        children: [ root0 ]
   7070      }, queue = [ root1 ], node1;
   7071      while ((node1 = queue.pop()) != null) {
   7072        for (var children = node1.children, child, i = 0, n = children.length; i < n; ++i) {
   7073          queue.push((children[i] = child = {
   7074            _: children[i],
   7075            parent: node1,
   7076            children: (child = children[i].children) && child.slice() || [],
   7077            A: null,
   7078            a: null,
   7079            z: 0,
   7080            m: 0,
   7081            c: 0,
   7082            s: 0,
   7083            t: null,
   7084            i: i
   7085          }).a = child);
   7086        }
   7087      }
   7088      return root1.children[0];
   7089    }
   7090    function firstWalk(v) {
   7091      var children = v.children, siblings = v.parent.children, w = v.i ? siblings[v.i - 1] : null;
   7092      if (children.length) {
   7093        d3_layout_treeShift(v);
   7094        var midpoint = (children[0].z + children[children.length - 1].z) / 2;
   7095        if (w) {
   7096          v.z = w.z + separation(v._, w._);
   7097          v.m = v.z - midpoint;
   7098        } else {
   7099          v.z = midpoint;
   7100        }
   7101      } else if (w) {
   7102        v.z = w.z + separation(v._, w._);
   7103      }
   7104      v.parent.A = apportion(v, w, v.parent.A || siblings[0]);
   7105    }
   7106    function secondWalk(v) {
   7107      v._.x = v.z + v.parent.m;
   7108      v.m += v.parent.m;
   7109    }
   7110    function apportion(v, w, ancestor) {
   7111      if (w) {
   7112        var vip = v, vop = v, vim = w, vom = vip.parent.children[0], sip = vip.m, sop = vop.m, sim = vim.m, som = vom.m, shift;
   7113        while (vim = d3_layout_treeRight(vim), vip = d3_layout_treeLeft(vip), vim && vip) {
   7114          vom = d3_layout_treeLeft(vom);
   7115          vop = d3_layout_treeRight(vop);
   7116          vop.a = v;
   7117          shift = vim.z + sim - vip.z - sip + separation(vim._, vip._);
   7118          if (shift > 0) {
   7119            d3_layout_treeMove(d3_layout_treeAncestor(vim, v, ancestor), v, shift);
   7120            sip += shift;
   7121            sop += shift;
   7122          }
   7123          sim += vim.m;
   7124          sip += vip.m;
   7125          som += vom.m;
   7126          sop += vop.m;
   7127        }
   7128        if (vim && !d3_layout_treeRight(vop)) {
   7129          vop.t = vim;
   7130          vop.m += sim - sop;
   7131        }
   7132        if (vip && !d3_layout_treeLeft(vom)) {
   7133          vom.t = vip;
   7134          vom.m += sip - som;
   7135          ancestor = v;
   7136        }
   7137      }
   7138      return ancestor;
   7139    }
   7140    function sizeNode(node) {
   7141      node.x *= size[0];
   7142      node.y = node.depth * size[1];
   7143    }
   7144    tree.separation = function(x) {
   7145      if (!arguments.length) return separation;
   7146      separation = x;
   7147      return tree;
   7148    };
   7149    tree.size = function(x) {
   7150      if (!arguments.length) return nodeSize ? null : size;
   7151      nodeSize = (size = x) == null ? sizeNode : null;
   7152      return tree;
   7153    };
   7154    tree.nodeSize = function(x) {
   7155      if (!arguments.length) return nodeSize ? size : null;
   7156      nodeSize = (size = x) == null ? null : sizeNode;
   7157      return tree;
   7158    };
   7159    return d3_layout_hierarchyRebind(tree, hierarchy);
   7160  };
   7161  function d3_layout_treeSeparation(a, b) {
   7162    return a.parent == b.parent ? 1 : 2;
   7163  }
   7164  function d3_layout_treeLeft(v) {
   7165    var children = v.children;
   7166    return children.length ? children[0] : v.t;
   7167  }
   7168  function d3_layout_treeRight(v) {
   7169    var children = v.children, n;
   7170    return (n = children.length) ? children[n - 1] : v.t;
   7171  }
   7172  function d3_layout_treeMove(wm, wp, shift) {
   7173    var change = shift / (wp.i - wm.i);
   7174    wp.c -= change;
   7175    wp.s += shift;
   7176    wm.c += change;
   7177    wp.z += shift;
   7178    wp.m += shift;
   7179  }
   7180  function d3_layout_treeShift(v) {
   7181    var shift = 0, change = 0, children = v.children, i = children.length, w;
   7182    while (--i >= 0) {
   7183      w = children[i];
   7184      w.z += shift;
   7185      w.m += shift;
   7186      shift += w.s + (change += w.c);
   7187    }
   7188  }
   7189  function d3_layout_treeAncestor(vim, v, ancestor) {
   7190    return vim.a.parent === v.parent ? vim.a : ancestor;
   7191  }
   7192  d3.layout.cluster = function() {
   7193    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = false;
   7194    function cluster(d, i) {
   7195      var nodes = hierarchy.call(this, d, i), root = nodes[0], previousNode, x = 0;
   7196      d3_layout_hierarchyVisitAfter(root, function(node) {
   7197        var children = node.children;
   7198        if (children && children.length) {
   7199          node.x = d3_layout_clusterX(children);
   7200          node.y = d3_layout_clusterY(children);
   7201        } else {
   7202          node.x = previousNode ? x += separation(node, previousNode) : 0;
   7203          node.y = 0;
   7204          previousNode = node;
   7205        }
   7206      });
   7207      var left = d3_layout_clusterLeft(root), right = d3_layout_clusterRight(root), x0 = left.x - separation(left, right) / 2, x1 = right.x + separation(right, left) / 2;
   7208      d3_layout_hierarchyVisitAfter(root, nodeSize ? function(node) {
   7209        node.x = (node.x - root.x) * size[0];
   7210        node.y = (root.y - node.y) * size[1];
   7211      } : function(node) {
   7212        node.x = (node.x - x0) / (x1 - x0) * size[0];
   7213        node.y = (1 - (root.y ? node.y / root.y : 1)) * size[1];
   7214      });
   7215      return nodes;
   7216    }
   7217    cluster.separation = function(x) {
   7218      if (!arguments.length) return separation;
   7219      separation = x;
   7220      return cluster;
   7221    };
   7222    cluster.size = function(x) {
   7223      if (!arguments.length) return nodeSize ? null : size;
   7224      nodeSize = (size = x) == null;
   7225      return cluster;
   7226    };
   7227    cluster.nodeSize = function(x) {
   7228      if (!arguments.length) return nodeSize ? size : null;
   7229      nodeSize = (size = x) != null;
   7230      return cluster;
   7231    };
   7232    return d3_layout_hierarchyRebind(cluster, hierarchy);
   7233  };
   7234  function d3_layout_clusterY(children) {
   7235    return 1 + d3.max(children, function(child) {
   7236      return child.y;
   7237    });
   7238  }
   7239  function d3_layout_clusterX(children) {
   7240    return children.reduce(function(x, child) {
   7241      return x + child.x;
   7242    }, 0) / children.length;
   7243  }
   7244  function d3_layout_clusterLeft(node) {
   7245    var children = node.children;
   7246    return children && children.length ? d3_layout_clusterLeft(children[0]) : node;
   7247  }
   7248  function d3_layout_clusterRight(node) {
   7249    var children = node.children, n;
   7250    return children && (n = children.length) ? d3_layout_clusterRight(children[n - 1]) : node;
   7251  }
   7252  d3.layout.treemap = function() {
   7253    var hierarchy = d3.layout.hierarchy(), round = Math.round, size = [ 1, 1 ], padding = null, pad = d3_layout_treemapPadNull, sticky = false, stickies, mode = "squarify", ratio = .5 * (1 + Math.sqrt(5));
   7254    function scale(children, k) {
   7255      var i = -1, n = children.length, child, area;
   7256      while (++i < n) {
   7257        area = (child = children[i]).value * (k < 0 ? 0 : k);
   7258        child.area = isNaN(area) || area <= 0 ? 0 : area;
   7259      }
   7260    }
   7261    function squarify(node) {
   7262      var children = node.children;
   7263      if (children && children.length) {
   7264        var rect = pad(node), row = [], remaining = children.slice(), child, best = Infinity, score, u = mode === "slice" ? rect.dx : mode === "dice" ? rect.dy : mode === "slice-dice" ? node.depth & 1 ? rect.dy : rect.dx : Math.min(rect.dx, rect.dy), n;
   7265        scale(remaining, rect.dx * rect.dy / node.value);
   7266        row.area = 0;
   7267        while ((n = remaining.length) > 0) {
   7268          row.push(child = remaining[n - 1]);
   7269          row.area += child.area;
   7270          if (mode !== "squarify" || (score = worst(row, u)) <= best) {
   7271            remaining.pop();
   7272            best = score;
   7273          } else {
   7274            row.area -= row.pop().area;
   7275            position(row, u, rect, false);
   7276            u = Math.min(rect.dx, rect.dy);
   7277            row.length = row.area = 0;
   7278            best = Infinity;
   7279          }
   7280        }
   7281        if (row.length) {
   7282          position(row, u, rect, true);
   7283          row.length = row.area = 0;
   7284        }
   7285        children.forEach(squarify);
   7286      }
   7287    }
   7288    function stickify(node) {
   7289      var children = node.children;
   7290      if (children && children.length) {
   7291        var rect = pad(node), remaining = children.slice(), child, row = [];
   7292        scale(remaining, rect.dx * rect.dy / node.value);
   7293        row.area = 0;
   7294        while (child = remaining.pop()) {
   7295          row.push(child);
   7296          row.area += child.area;
   7297          if (child.z != null) {
   7298            position(row, child.z ? rect.dx : rect.dy, rect, !remaining.length);
   7299            row.length = row.area = 0;
   7300          }
   7301        }
   7302        children.forEach(stickify);
   7303      }
   7304    }
   7305    function worst(row, u) {
   7306      var s = row.area, r, rmax = 0, rmin = Infinity, i = -1, n = row.length;
   7307      while (++i < n) {
   7308        if (!(r = row[i].area)) continue;
   7309        if (r < rmin) rmin = r;
   7310        if (r > rmax) rmax = r;
   7311      }
   7312      s *= s;
   7313      u *= u;
   7314      return s ? Math.max(u * rmax * ratio / s, s / (u * rmin * ratio)) : Infinity;
   7315    }
   7316    function position(row, u, rect, flush) {
   7317      var i = -1, n = row.length, x = rect.x, y = rect.y, v = u ? round(row.area / u) : 0, o;
   7318      if (u == rect.dx) {
   7319        if (flush || v > rect.dy) v = rect.dy;
   7320        while (++i < n) {
   7321          o = row[i];
   7322          o.x = x;
   7323          o.y = y;
   7324          o.dy = v;
   7325          x += o.dx = Math.min(rect.x + rect.dx - x, v ? round(o.area / v) : 0);
   7326        }
   7327        o.z = true;
   7328        o.dx += rect.x + rect.dx - x;
   7329        rect.y += v;
   7330        rect.dy -= v;
   7331      } else {
   7332        if (flush || v > rect.dx) v = rect.dx;
   7333        while (++i < n) {
   7334          o = row[i];
   7335          o.x = x;
   7336          o.y = y;
   7337          o.dx = v;
   7338          y += o.dy = Math.min(rect.y + rect.dy - y, v ? round(o.area / v) : 0);
   7339        }
   7340        o.z = false;
   7341        o.dy += rect.y + rect.dy - y;
   7342        rect.x += v;
   7343        rect.dx -= v;
   7344      }
   7345    }
   7346    function treemap(d) {
   7347      var nodes = stickies || hierarchy(d), root = nodes[0];
   7348      root.x = root.y = 0;
   7349      if (root.value) root.dx = size[0], root.dy = size[1]; else root.dx = root.dy = 0;
   7350      if (stickies) hierarchy.revalue(root);
   7351      scale([ root ], root.dx * root.dy / root.value);
   7352      (stickies ? stickify : squarify)(root);
   7353      if (sticky) stickies = nodes;
   7354      return nodes;
   7355    }
   7356    treemap.size = function(x) {
   7357      if (!arguments.length) return size;
   7358      size = x;
   7359      return treemap;
   7360    };
   7361    treemap.padding = function(x) {
   7362      if (!arguments.length) return padding;
   7363      function padFunction(node) {
   7364        var p = x.call(treemap, node, node.depth);
   7365        return p == null ? d3_layout_treemapPadNull(node) : d3_layout_treemapPad(node, typeof p === "number" ? [ p, p, p, p ] : p);
   7366      }
   7367      function padConstant(node) {
   7368        return d3_layout_treemapPad(node, x);
   7369      }
   7370      var type;
   7371      pad = (padding = x) == null ? d3_layout_treemapPadNull : (type = typeof x) === "function" ? padFunction : type === "number" ? (x = [ x, x, x, x ], 
   7372      padConstant) : padConstant;
   7373      return treemap;
   7374    };
   7375    treemap.round = function(x) {
   7376      if (!arguments.length) return round != Number;
   7377      round = x ? Math.round : Number;
   7378      return treemap;
   7379    };
   7380    treemap.sticky = function(x) {
   7381      if (!arguments.length) return sticky;
   7382      sticky = x;
   7383      stickies = null;
   7384      return treemap;
   7385    };
   7386    treemap.ratio = function(x) {
   7387      if (!arguments.length) return ratio;
   7388      ratio = x;
   7389      return treemap;
   7390    };
   7391    treemap.mode = function(x) {
   7392      if (!arguments.length) return mode;
   7393      mode = x + "";
   7394      return treemap;
   7395    };
   7396    return d3_layout_hierarchyRebind(treemap, hierarchy);
   7397  };
   7398  function d3_layout_treemapPadNull(node) {
   7399    return {
   7400      x: node.x,
   7401      y: node.y,
   7402      dx: node.dx,
   7403      dy: node.dy
   7404    };
   7405  }
   7406  function d3_layout_treemapPad(node, padding) {
   7407    var x = node.x + padding[3], y = node.y + padding[0], dx = node.dx - padding[1] - padding[3], dy = node.dy - padding[0] - padding[2];
   7408    if (dx < 0) {
   7409      x += dx / 2;
   7410      dx = 0;
   7411    }
   7412    if (dy < 0) {
   7413      y += dy / 2;
   7414      dy = 0;
   7415    }
   7416    return {
   7417      x: x,
   7418      y: y,
   7419      dx: dx,
   7420      dy: dy
   7421    };
   7422  }
   7423  d3.random = {
   7424    normal: function(µ, σ) {
   7425      var n = arguments.length;
   7426      if (n < 2) σ = 1;
   7427      if (n < 1) µ = 0;
   7428      return function() {
   7429        var x, y, r;
   7430        do {
   7431          x = Math.random() * 2 - 1;
   7432          y = Math.random() * 2 - 1;
   7433          r = x * x + y * y;
   7434        } while (!r || r > 1);
   7435        return µ + σ * x * Math.sqrt(-2 * Math.log(r) / r);
   7436      };
   7437    },
   7438    logNormal: function() {
   7439      var random = d3.random.normal.apply(d3, arguments);
   7440      return function() {
   7441        return Math.exp(random());
   7442      };
   7443    },
   7444    bates: function(m) {
   7445      var random = d3.random.irwinHall(m);
   7446      return function() {
   7447        return random() / m;
   7448      };
   7449    },
   7450    irwinHall: function(m) {
   7451      return function() {
   7452        for (var s = 0, j = 0; j < m; j++) s += Math.random();
   7453        return s;
   7454      };
   7455    }
   7456  };
   7457  d3.scale = {};
   7458  function d3_scaleExtent(domain) {
   7459    var start = domain[0], stop = domain[domain.length - 1];
   7460    return start < stop ? [ start, stop ] : [ stop, start ];
   7461  }
   7462  function d3_scaleRange(scale) {
   7463    return scale.rangeExtent ? scale.rangeExtent() : d3_scaleExtent(scale.range());
   7464  }
   7465  function d3_scale_bilinear(domain, range, uninterpolate, interpolate) {
   7466    var u = uninterpolate(domain[0], domain[1]), i = interpolate(range[0], range[1]);
   7467    return function(x) {
   7468      return i(u(x));
   7469    };
   7470  }
   7471  function d3_scale_nice(domain, nice) {
   7472    var i0 = 0, i1 = domain.length - 1, x0 = domain[i0], x1 = domain[i1], dx;
   7473    if (x1 < x0) {
   7474      dx = i0, i0 = i1, i1 = dx;
   7475      dx = x0, x0 = x1, x1 = dx;
   7476    }
   7477    domain[i0] = nice.floor(x0);
   7478    domain[i1] = nice.ceil(x1);
   7479    return domain;
   7480  }
   7481  function d3_scale_niceStep(step) {
   7482    return step ? {
   7483      floor: function(x) {
   7484        return Math.floor(x / step) * step;
   7485      },
   7486      ceil: function(x) {
   7487        return Math.ceil(x / step) * step;
   7488      }
   7489    } : d3_scale_niceIdentity;
   7490  }
   7491  var d3_scale_niceIdentity = {
   7492    floor: d3_identity,
   7493    ceil: d3_identity
   7494  };
   7495  function d3_scale_polylinear(domain, range, uninterpolate, interpolate) {
   7496    var u = [], i = [], j = 0, k = Math.min(domain.length, range.length) - 1;
   7497    if (domain[k] < domain[0]) {
   7498      domain = domain.slice().reverse();
   7499      range = range.slice().reverse();
   7500    }
   7501    while (++j <= k) {
   7502      u.push(uninterpolate(domain[j - 1], domain[j]));
   7503      i.push(interpolate(range[j - 1], range[j]));
   7504    }
   7505    return function(x) {
   7506      var j = d3.bisect(domain, x, 1, k) - 1;
   7507      return i[j](u[j](x));
   7508    };
   7509  }
   7510  d3.scale.linear = function() {
   7511    return d3_scale_linear([ 0, 1 ], [ 0, 1 ], d3_interpolate, false);
   7512  };
   7513  function d3_scale_linear(domain, range, interpolate, clamp) {
   7514    var output, input;
   7515    function rescale() {
   7516      var linear = Math.min(domain.length, range.length) > 2 ? d3_scale_polylinear : d3_scale_bilinear, uninterpolate = clamp ? d3_uninterpolateClamp : d3_uninterpolateNumber;
   7517      output = linear(domain, range, uninterpolate, interpolate);
   7518      input = linear(range, domain, uninterpolate, d3_interpolate);
   7519      return scale;
   7520    }
   7521    function scale(x) {
   7522      return output(x);
   7523    }
   7524    scale.invert = function(y) {
   7525      return input(y);
   7526    };
   7527    scale.domain = function(x) {
   7528      if (!arguments.length) return domain;
   7529      domain = x.map(Number);
   7530      return rescale();
   7531    };
   7532    scale.range = function(x) {
   7533      if (!arguments.length) return range;
   7534      range = x;
   7535      return rescale();
   7536    };
   7537    scale.rangeRound = function(x) {
   7538      return scale.range(x).interpolate(d3_interpolateRound);
   7539    };
   7540    scale.clamp = function(x) {
   7541      if (!arguments.length) return clamp;
   7542      clamp = x;
   7543      return rescale();
   7544    };
   7545    scale.interpolate = function(x) {
   7546      if (!arguments.length) return interpolate;
   7547      interpolate = x;
   7548      return rescale();
   7549    };
   7550    scale.ticks = function(m) {
   7551      return d3_scale_linearTicks(domain, m);
   7552    };
   7553    scale.tickFormat = function(m, format) {
   7554      return d3_scale_linearTickFormat(domain, m, format);
   7555    };
   7556    scale.nice = function(m) {
   7557      d3_scale_linearNice(domain, m);
   7558      return rescale();
   7559    };
   7560    scale.copy = function() {
   7561      return d3_scale_linear(domain, range, interpolate, clamp);
   7562    };
   7563    return rescale();
   7564  }
   7565  function d3_scale_linearRebind(scale, linear) {
   7566    return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
   7567  }
   7568  function d3_scale_linearNice(domain, m) {
   7569    d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
   7570    d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
   7571    return domain;
   7572  }
   7573  function d3_scale_linearTickRange(domain, m) {
   7574    if (m == null) m = 10;
   7575    var extent = d3_scaleExtent(domain), span = extent[1] - extent[0], step = Math.pow(10, Math.floor(Math.log(span / m) / Math.LN10)), err = m / span * step;
   7576    if (err <= .15) step *= 10; else if (err <= .35) step *= 5; else if (err <= .75) step *= 2;
   7577    extent[0] = Math.ceil(extent[0] / step) * step;
   7578    extent[1] = Math.floor(extent[1] / step) * step + step * .5;
   7579    extent[2] = step;
   7580    return extent;
   7581  }
   7582  function d3_scale_linearTicks(domain, m) {
   7583    return d3.range.apply(d3, d3_scale_linearTickRange(domain, m));
   7584  }
   7585  function d3_scale_linearTickFormat(domain, m, format) {
   7586    var range = d3_scale_linearTickRange(domain, m);
   7587    if (format) {
   7588      var match = d3_format_re.exec(format);
   7589      match.shift();
   7590      if (match[8] === "s") {
   7591        var prefix = d3.formatPrefix(Math.max(abs(range[0]), abs(range[1])));
   7592        if (!match[7]) match[7] = "." + d3_scale_linearPrecision(prefix.scale(range[2]));
   7593        match[8] = "f";
   7594        format = d3.format(match.join(""));
   7595        return function(d) {
   7596          return format(prefix.scale(d)) + prefix.symbol;
   7597        };
   7598      }
   7599      if (!match[7]) match[7] = "." + d3_scale_linearFormatPrecision(match[8], range);
   7600      format = match.join("");
   7601    } else {
   7602      format = ",." + d3_scale_linearPrecision(range[2]) + "f";
   7603    }
   7604    return d3.format(format);
   7605  }
   7606  var d3_scale_linearFormatSignificant = {
   7607    s: 1,
   7608    g: 1,
   7609    p: 1,
   7610    r: 1,
   7611    e: 1
   7612  };
   7613  function d3_scale_linearPrecision(value) {
   7614    return -Math.floor(Math.log(value) / Math.LN10 + .01);
   7615  }
   7616  function d3_scale_linearFormatPrecision(type, range) {
   7617    var p = d3_scale_linearPrecision(range[2]);
   7618    return type in d3_scale_linearFormatSignificant ? Math.abs(p - d3_scale_linearPrecision(Math.max(abs(range[0]), abs(range[1])))) + +(type !== "e") : p - (type === "%") * 2;
   7619  }
   7620  d3.scale.log = function() {
   7621    return d3_scale_log(d3.scale.linear().domain([ 0, 1 ]), 10, true, [ 1, 10 ]);
   7622  };
   7623  function d3_scale_log(linear, base, positive, domain) {
   7624    function log(x) {
   7625      return (positive ? Math.log(x < 0 ? 0 : x) : -Math.log(x > 0 ? 0 : -x)) / Math.log(base);
   7626    }
   7627    function pow(x) {
   7628      return positive ? Math.pow(base, x) : -Math.pow(base, -x);
   7629    }
   7630    function scale(x) {
   7631      return linear(log(x));
   7632    }
   7633    scale.invert = function(x) {
   7634      return pow(linear.invert(x));
   7635    };
   7636    scale.domain = function(x) {
   7637      if (!arguments.length) return domain;
   7638      positive = x[0] >= 0;
   7639      linear.domain((domain = x.map(Number)).map(log));
   7640      return scale;
   7641    };
   7642    scale.base = function(_) {
   7643      if (!arguments.length) return base;
   7644      base = +_;
   7645      linear.domain(domain.map(log));
   7646      return scale;
   7647    };
   7648    scale.nice = function() {
   7649      var niced = d3_scale_nice(domain.map(log), positive ? Math : d3_scale_logNiceNegative);
   7650      linear.domain(niced);
   7651      domain = niced.map(pow);
   7652      return scale;
   7653    };
   7654    scale.ticks = function() {
   7655      var extent = d3_scaleExtent(domain), ticks = [], u = extent[0], v = extent[1], i = Math.floor(log(u)), j = Math.ceil(log(v)), n = base % 1 ? 2 : base;
   7656      if (isFinite(j - i)) {
   7657        if (positive) {
   7658          for (;i < j; i++) for (var k = 1; k < n; k++) ticks.push(pow(i) * k);
   7659          ticks.push(pow(i));
   7660        } else {
   7661          ticks.push(pow(i));
   7662          for (;i++ < j; ) for (var k = n - 1; k > 0; k--) ticks.push(pow(i) * k);
   7663        }
   7664        for (i = 0; ticks[i] < u; i++) {}
   7665        for (j = ticks.length; ticks[j - 1] > v; j--) {}
   7666        ticks = ticks.slice(i, j);
   7667      }
   7668      return ticks;
   7669    };
   7670    scale.tickFormat = function(n, format) {
   7671      if (!arguments.length) return d3_scale_logFormat;
   7672      if (arguments.length < 2) format = d3_scale_logFormat; else if (typeof format !== "function") format = d3.format(format);
   7673      var k = Math.max(1, base * n / scale.ticks().length);
   7674      return function(d) {
   7675        var i = d / pow(Math.round(log(d)));
   7676        if (i * base < base - .5) i *= base;
   7677        return i <= k ? format(d) : "";
   7678      };
   7679    };
   7680    scale.copy = function() {
   7681      return d3_scale_log(linear.copy(), base, positive, domain);
   7682    };
   7683    return d3_scale_linearRebind(scale, linear);
   7684  }
   7685  var d3_scale_logFormat = d3.format(".0e"), d3_scale_logNiceNegative = {
   7686    floor: function(x) {
   7687      return -Math.ceil(-x);
   7688    },
   7689    ceil: function(x) {
   7690      return -Math.floor(-x);
   7691    }
   7692  };
   7693  d3.scale.pow = function() {
   7694    return d3_scale_pow(d3.scale.linear(), 1, [ 0, 1 ]);
   7695  };
   7696  function d3_scale_pow(linear, exponent, domain) {
   7697    var powp = d3_scale_powPow(exponent), powb = d3_scale_powPow(1 / exponent);
   7698    function scale(x) {
   7699      return linear(powp(x));
   7700    }
   7701    scale.invert = function(x) {
   7702      return powb(linear.invert(x));
   7703    };
   7704    scale.domain = function(x) {
   7705      if (!arguments.length) return domain;
   7706      linear.domain((domain = x.map(Number)).map(powp));
   7707      return scale;
   7708    };
   7709    scale.ticks = function(m) {
   7710      return d3_scale_linearTicks(domain, m);
   7711    };
   7712    scale.tickFormat = function(m, format) {
   7713      return d3_scale_linearTickFormat(domain, m, format);
   7714    };
   7715    scale.nice = function(m) {
   7716      return scale.domain(d3_scale_linearNice(domain, m));
   7717    };
   7718    scale.exponent = function(x) {
   7719      if (!arguments.length) return exponent;
   7720      powp = d3_scale_powPow(exponent = x);
   7721      powb = d3_scale_powPow(1 / exponent);
   7722      linear.domain(domain.map(powp));
   7723      return scale;
   7724    };
   7725    scale.copy = function() {
   7726      return d3_scale_pow(linear.copy(), exponent, domain);
   7727    };
   7728    return d3_scale_linearRebind(scale, linear);
   7729  }
   7730  function d3_scale_powPow(e) {
   7731    return function(x) {
   7732      return x < 0 ? -Math.pow(-x, e) : Math.pow(x, e);
   7733    };
   7734  }
   7735  d3.scale.sqrt = function() {
   7736    return d3.scale.pow().exponent(.5);
   7737  };
   7738  d3.scale.ordinal = function() {
   7739    return d3_scale_ordinal([], {
   7740      t: "range",
   7741      a: [ [] ]
   7742    });
   7743  };
   7744  function d3_scale_ordinal(domain, ranger) {
   7745    var index, range, rangeBand;
   7746    function scale(x) {
   7747      return range[((index.get(x) || (ranger.t === "range" ? index.set(x, domain.push(x)) : NaN)) - 1) % range.length];
   7748    }
   7749    function steps(start, step) {
   7750      return d3.range(domain.length).map(function(i) {
   7751        return start + step * i;
   7752      });
   7753    }
   7754    scale.domain = function(x) {
   7755      if (!arguments.length) return domain;
   7756      domain = [];
   7757      index = new d3_Map();
   7758      var i = -1, n = x.length, xi;
   7759      while (++i < n) if (!index.has(xi = x[i])) index.set(xi, domain.push(xi));
   7760      return scale[ranger.t].apply(scale, ranger.a);
   7761    };
   7762    scale.range = function(x) {
   7763      if (!arguments.length) return range;
   7764      range = x;
   7765      rangeBand = 0;
   7766      ranger = {
   7767        t: "range",
   7768        a: arguments
   7769      };
   7770      return scale;
   7771    };
   7772    scale.rangePoints = function(x, padding) {
   7773      if (arguments.length < 2) padding = 0;
   7774      var start = x[0], stop = x[1], step = domain.length < 2 ? (start = (start + stop) / 2, 
   7775      0) : (stop - start) / (domain.length - 1 + padding);
   7776      range = steps(start + step * padding / 2, step);
   7777      rangeBand = 0;
   7778      ranger = {
   7779        t: "rangePoints",
   7780        a: arguments
   7781      };
   7782      return scale;
   7783    };
   7784    scale.rangeRoundPoints = function(x, padding) {
   7785      if (arguments.length < 2) padding = 0;
   7786      var start = x[0], stop = x[1], step = domain.length < 2 ? (start = stop = Math.round((start + stop) / 2), 
   7787      0) : (stop - start) / (domain.length - 1 + padding) | 0;
   7788      range = steps(start + Math.round(step * padding / 2 + (stop - start - (domain.length - 1 + padding) * step) / 2), step);
   7789      rangeBand = 0;
   7790      ranger = {
   7791        t: "rangeRoundPoints",
   7792        a: arguments
   7793      };
   7794      return scale;
   7795    };
   7796    scale.rangeBands = function(x, padding, outerPadding) {
   7797      if (arguments.length < 2) padding = 0;
   7798      if (arguments.length < 3) outerPadding = padding;
   7799      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = (stop - start) / (domain.length - padding + 2 * outerPadding);
   7800      range = steps(start + step * outerPadding, step);
   7801      if (reverse) range.reverse();
   7802      rangeBand = step * (1 - padding);
   7803      ranger = {
   7804        t: "rangeBands",
   7805        a: arguments
   7806      };
   7807      return scale;
   7808    };
   7809    scale.rangeRoundBands = function(x, padding, outerPadding) {
   7810      if (arguments.length < 2) padding = 0;
   7811      if (arguments.length < 3) outerPadding = padding;
   7812      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = Math.floor((stop - start) / (domain.length - padding + 2 * outerPadding));
   7813      range = steps(start + Math.round((stop - start - (domain.length - padding) * step) / 2), step);
   7814      if (reverse) range.reverse();
   7815      rangeBand = Math.round(step * (1 - padding));
   7816      ranger = {
   7817        t: "rangeRoundBands",
   7818        a: arguments
   7819      };
   7820      return scale;
   7821    };
   7822    scale.rangeBand = function() {
   7823      return rangeBand;
   7824    };
   7825    scale.rangeExtent = function() {
   7826      return d3_scaleExtent(ranger.a[0]);
   7827    };
   7828    scale.copy = function() {
   7829      return d3_scale_ordinal(domain, ranger);
   7830    };
   7831    return scale.domain(domain);
   7832  }
   7833  d3.scale.category10 = function() {
   7834    return d3.scale.ordinal().range(d3_category10);
   7835  };
   7836  d3.scale.category20 = function() {
   7837    return d3.scale.ordinal().range(d3_category20);
   7838  };
   7839  d3.scale.category20b = function() {
   7840    return d3.scale.ordinal().range(d3_category20b);
   7841  };
   7842  d3.scale.category20c = function() {
   7843    return d3.scale.ordinal().range(d3_category20c);
   7844  };
   7845  var d3_category10 = [ 2062260, 16744206, 2924588, 14034728, 9725885, 9197131, 14907330, 8355711, 12369186, 1556175 ].map(d3_rgbString);
   7846  var d3_category20 = [ 2062260, 11454440, 16744206, 16759672, 2924588, 10018698, 14034728, 16750742, 9725885, 12955861, 9197131, 12885140, 14907330, 16234194, 8355711, 13092807, 12369186, 14408589, 1556175, 10410725 ].map(d3_rgbString);
   7847  var d3_category20b = [ 3750777, 5395619, 7040719, 10264286, 6519097, 9216594, 11915115, 13556636, 9202993, 12426809, 15186514, 15190932, 8666169, 11356490, 14049643, 15177372, 8077683, 10834324, 13528509, 14589654 ].map(d3_rgbString);
   7848  var d3_category20c = [ 3244733, 7057110, 10406625, 13032431, 15095053, 16616764, 16625259, 16634018, 3253076, 7652470, 10607003, 13101504, 7695281, 10394312, 12369372, 14342891, 6513507, 9868950, 12434877, 14277081 ].map(d3_rgbString);
   7849  d3.scale.quantile = function() {
   7850    return d3_scale_quantile([], []);
   7851  };
   7852  function d3_scale_quantile(domain, range) {
   7853    var thresholds;
   7854    function rescale() {
   7855      var k = 0, q = range.length;
   7856      thresholds = [];
   7857      while (++k < q) thresholds[k - 1] = d3.quantile(domain, k / q);
   7858      return scale;
   7859    }
   7860    function scale(x) {
   7861      if (!isNaN(x = +x)) return range[d3.bisect(thresholds, x)];
   7862    }
   7863    scale.domain = function(x) {
   7864      if (!arguments.length) return domain;
   7865      domain = x.map(d3_number).filter(d3_numeric).sort(d3_ascending);
   7866      return rescale();
   7867    };
   7868    scale.range = function(x) {
   7869      if (!arguments.length) return range;
   7870      range = x;
   7871      return rescale();
   7872    };
   7873    scale.quantiles = function() {
   7874      return thresholds;
   7875    };
   7876    scale.invertExtent = function(y) {
   7877      y = range.indexOf(y);
   7878      return y < 0 ? [ NaN, NaN ] : [ y > 0 ? thresholds[y - 1] : domain[0], y < thresholds.length ? thresholds[y] : domain[domain.length - 1] ];
   7879    };
   7880    scale.copy = function() {
   7881      return d3_scale_quantile(domain, range);
   7882    };
   7883    return rescale();
   7884  }
   7885  d3.scale.quantize = function() {
   7886    return d3_scale_quantize(0, 1, [ 0, 1 ]);
   7887  };
   7888  function d3_scale_quantize(x0, x1, range) {
   7889    var kx, i;
   7890    function scale(x) {
   7891      return range[Math.max(0, Math.min(i, Math.floor(kx * (x - x0))))];
   7892    }
   7893    function rescale() {
   7894      kx = range.length / (x1 - x0);
   7895      i = range.length - 1;
   7896      return scale;
   7897    }
   7898    scale.domain = function(x) {
   7899      if (!arguments.length) return [ x0, x1 ];
   7900      x0 = +x[0];
   7901      x1 = +x[x.length - 1];
   7902      return rescale();
   7903    };
   7904    scale.range = function(x) {
   7905      if (!arguments.length) return range;
   7906      range = x;
   7907      return rescale();
   7908    };
   7909    scale.invertExtent = function(y) {
   7910      y = range.indexOf(y);
   7911      y = y < 0 ? NaN : y / kx + x0;
   7912      return [ y, y + 1 / kx ];
   7913    };
   7914    scale.copy = function() {
   7915      return d3_scale_quantize(x0, x1, range);
   7916    };
   7917    return rescale();
   7918  }
   7919  d3.scale.threshold = function() {
   7920    return d3_scale_threshold([ .5 ], [ 0, 1 ]);
   7921  };
   7922  function d3_scale_threshold(domain, range) {
   7923    function scale(x) {
   7924      if (x <= x) return range[d3.bisect(domain, x)];
   7925    }
   7926    scale.domain = function(_) {
   7927      if (!arguments.length) return domain;
   7928      domain = _;
   7929      return scale;
   7930    };
   7931    scale.range = function(_) {
   7932      if (!arguments.length) return range;
   7933      range = _;
   7934      return scale;
   7935    };
   7936    scale.invertExtent = function(y) {
   7937      y = range.indexOf(y);
   7938      return [ domain[y - 1], domain[y] ];
   7939    };
   7940    scale.copy = function() {
   7941      return d3_scale_threshold(domain, range);
   7942    };
   7943    return scale;
   7944  }
   7945  d3.scale.identity = function() {
   7946    return d3_scale_identity([ 0, 1 ]);
   7947  };
   7948  function d3_scale_identity(domain) {
   7949    function identity(x) {
   7950      return +x;
   7951    }
   7952    identity.invert = identity;
   7953    identity.domain = identity.range = function(x) {
   7954      if (!arguments.length) return domain;
   7955      domain = x.map(identity);
   7956      return identity;
   7957    };
   7958    identity.ticks = function(m) {
   7959      return d3_scale_linearTicks(domain, m);
   7960    };
   7961    identity.tickFormat = function(m, format) {
   7962      return d3_scale_linearTickFormat(domain, m, format);
   7963    };
   7964    identity.copy = function() {
   7965      return d3_scale_identity(domain);
   7966    };
   7967    return identity;
   7968  }
   7969  d3.svg = {};
   7970  function d3_zero() {
   7971    return 0;
   7972  }
   7973  d3.svg.arc = function() {
   7974    var innerRadius = d3_svg_arcInnerRadius, outerRadius = d3_svg_arcOuterRadius, cornerRadius = d3_zero, padRadius = d3_svg_arcAuto, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle, padAngle = d3_svg_arcPadAngle;
   7975    function arc() {
   7976      var r0 = Math.max(0, +innerRadius.apply(this, arguments)), r1 = Math.max(0, +outerRadius.apply(this, arguments)), a0 = startAngle.apply(this, arguments) - halfπ, a1 = endAngle.apply(this, arguments) - halfπ, da = Math.abs(a1 - a0), cw = a0 > a1 ? 0 : 1;
   7977      if (r1 < r0) rc = r1, r1 = r0, r0 = rc;
   7978      if (da >= τε) return circleSegment(r1, cw) + (r0 ? circleSegment(r0, 1 - cw) : "") + "Z";
   7979      var rc, cr, rp, ap, p0 = 0, p1 = 0, x0, y0, x1, y1, x2, y2, x3, y3, path = [];
   7980      if (ap = (+padAngle.apply(this, arguments) || 0) / 2) {
   7981        rp = padRadius === d3_svg_arcAuto ? Math.sqrt(r0 * r0 + r1 * r1) : +padRadius.apply(this, arguments);
   7982        if (!cw) p1 *= -1;
   7983        if (r1) p1 = d3_asin(rp / r1 * Math.sin(ap));
   7984        if (r0) p0 = d3_asin(rp / r0 * Math.sin(ap));
   7985      }
   7986      if (r1) {
   7987        x0 = r1 * Math.cos(a0 + p1);
   7988        y0 = r1 * Math.sin(a0 + p1);
   7989        x1 = r1 * Math.cos(a1 - p1);
   7990        y1 = r1 * Math.sin(a1 - p1);
   7991        var l1 = Math.abs(a1 - a0 - 2 * p1) <= π ? 0 : 1;
   7992        if (p1 && d3_svg_arcSweep(x0, y0, x1, y1) === cw ^ l1) {
   7993          var h1 = (a0 + a1) / 2;
   7994          x0 = r1 * Math.cos(h1);
   7995          y0 = r1 * Math.sin(h1);
   7996          x1 = y1 = null;
   7997        }
   7998      } else {
   7999        x0 = y0 = 0;
   8000      }
   8001      if (r0) {
   8002        x2 = r0 * Math.cos(a1 - p0);
   8003        y2 = r0 * Math.sin(a1 - p0);
   8004        x3 = r0 * Math.cos(a0 + p0);
   8005        y3 = r0 * Math.sin(a0 + p0);
   8006        var l0 = Math.abs(a0 - a1 + 2 * p0) <= π ? 0 : 1;
   8007        if (p0 && d3_svg_arcSweep(x2, y2, x3, y3) === 1 - cw ^ l0) {
   8008          var h0 = (a0 + a1) / 2;
   8009          x2 = r0 * Math.cos(h0);
   8010          y2 = r0 * Math.sin(h0);
   8011          x3 = y3 = null;
   8012        }
   8013      } else {
   8014        x2 = y2 = 0;
   8015      }
   8016      if (da > ε && (rc = Math.min(Math.abs(r1 - r0) / 2, +cornerRadius.apply(this, arguments))) > .001) {
   8017        cr = r0 < r1 ^ cw ? 0 : 1;
   8018        var rc1 = rc, rc0 = rc;
   8019        if (da < π) {
   8020          var oc = x3 == null ? [ x2, y2 ] : x1 == null ? [ x0, y0 ] : d3_geom_polygonIntersect([ x0, y0 ], [ x3, y3 ], [ x1, y1 ], [ x2, y2 ]), ax = x0 - oc[0], ay = y0 - oc[1], bx = x1 - oc[0], by = y1 - oc[1], kc = 1 / Math.sin(Math.acos((ax * bx + ay * by) / (Math.sqrt(ax * ax + ay * ay) * Math.sqrt(bx * bx + by * by))) / 2), lc = Math.sqrt(oc[0] * oc[0] + oc[1] * oc[1]);
   8021          rc0 = Math.min(rc, (r0 - lc) / (kc - 1));
   8022          rc1 = Math.min(rc, (r1 - lc) / (kc + 1));
   8023        }
   8024        if (x1 != null) {
   8025          var t30 = d3_svg_arcCornerTangents(x3 == null ? [ x2, y2 ] : [ x3, y3 ], [ x0, y0 ], r1, rc1, cw), t12 = d3_svg_arcCornerTangents([ x1, y1 ], [ x2, y2 ], r1, rc1, cw);
   8026          if (rc === rc1) {
   8027            path.push("M", t30[0], "A", rc1, ",", rc1, " 0 0,", cr, " ", t30[1], "A", r1, ",", r1, " 0 ", 1 - cw ^ d3_svg_arcSweep(t30[1][0], t30[1][1], t12[1][0], t12[1][1]), ",", cw, " ", t12[1], "A", rc1, ",", rc1, " 0 0,", cr, " ", t12[0]);
   8028          } else {
   8029            path.push("M", t30[0], "A", rc1, ",", rc1, " 0 1,", cr, " ", t12[0]);
   8030          }
   8031        } else {
   8032          path.push("M", x0, ",", y0);
   8033        }
   8034        if (x3 != null) {
   8035          var t03 = d3_svg_arcCornerTangents([ x0, y0 ], [ x3, y3 ], r0, -rc0, cw), t21 = d3_svg_arcCornerTangents([ x2, y2 ], x1 == null ? [ x0, y0 ] : [ x1, y1 ], r0, -rc0, cw);
   8036          if (rc === rc0) {
   8037            path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t21[1], "A", r0, ",", r0, " 0 ", cw ^ d3_svg_arcSweep(t21[1][0], t21[1][1], t03[1][0], t03[1][1]), ",", 1 - cw, " ", t03[1], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
   8038          } else {
   8039            path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
   8040          }
   8041        } else {
   8042          path.push("L", x2, ",", y2);
   8043        }
   8044      } else {
   8045        path.push("M", x0, ",", y0);
   8046        if (x1 != null) path.push("A", r1, ",", r1, " 0 ", l1, ",", cw, " ", x1, ",", y1);
   8047        path.push("L", x2, ",", y2);
   8048        if (x3 != null) path.push("A", r0, ",", r0, " 0 ", l0, ",", 1 - cw, " ", x3, ",", y3);
   8049      }
   8050      path.push("Z");
   8051      return path.join("");
   8052    }
   8053    function circleSegment(r1, cw) {
   8054      return "M0," + r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + -r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + r1;
   8055    }
   8056    arc.innerRadius = function(v) {
   8057      if (!arguments.length) return innerRadius;
   8058      innerRadius = d3_functor(v);
   8059      return arc;
   8060    };
   8061    arc.outerRadius = function(v) {
   8062      if (!arguments.length) return outerRadius;
   8063      outerRadius = d3_functor(v);
   8064      return arc;
   8065    };
   8066    arc.cornerRadius = function(v) {
   8067      if (!arguments.length) return cornerRadius;
   8068      cornerRadius = d3_functor(v);
   8069      return arc;
   8070    };
   8071    arc.padRadius = function(v) {
   8072      if (!arguments.length) return padRadius;
   8073      padRadius = v == d3_svg_arcAuto ? d3_svg_arcAuto : d3_functor(v);
   8074      return arc;
   8075    };
   8076    arc.startAngle = function(v) {
   8077      if (!arguments.length) return startAngle;
   8078      startAngle = d3_functor(v);
   8079      return arc;
   8080    };
   8081    arc.endAngle = function(v) {
   8082      if (!arguments.length) return endAngle;
   8083      endAngle = d3_functor(v);
   8084      return arc;
   8085    };
   8086    arc.padAngle = function(v) {
   8087      if (!arguments.length) return padAngle;
   8088      padAngle = d3_functor(v);
   8089      return arc;
   8090    };
   8091    arc.centroid = function() {
   8092      var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2, a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - halfπ;
   8093      return [ Math.cos(a) * r, Math.sin(a) * r ];
   8094    };
   8095    return arc;
   8096  };
   8097  var d3_svg_arcAuto = "auto";
   8098  function d3_svg_arcInnerRadius(d) {
   8099    return d.innerRadius;
   8100  }
   8101  function d3_svg_arcOuterRadius(d) {
   8102    return d.outerRadius;
   8103  }
   8104  function d3_svg_arcStartAngle(d) {
   8105    return d.startAngle;
   8106  }
   8107  function d3_svg_arcEndAngle(d) {
   8108    return d.endAngle;
   8109  }
   8110  function d3_svg_arcPadAngle(d) {
   8111    return d && d.padAngle;
   8112  }
   8113  function d3_svg_arcSweep(x0, y0, x1, y1) {
   8114    return (x0 - x1) * y0 - (y0 - y1) * x0 > 0 ? 0 : 1;
   8115  }
   8116  function d3_svg_arcCornerTangents(p0, p1, r1, rc, cw) {
   8117    var x01 = p0[0] - p1[0], y01 = p0[1] - p1[1], lo = (cw ? rc : -rc) / Math.sqrt(x01 * x01 + y01 * y01), ox = lo * y01, oy = -lo * x01, x1 = p0[0] + ox, y1 = p0[1] + oy, x2 = p1[0] + ox, y2 = p1[1] + oy, x3 = (x1 + x2) / 2, y3 = (y1 + y2) / 2, dx = x2 - x1, dy = y2 - y1, d2 = dx * dx + dy * dy, r = r1 - rc, D = x1 * y2 - x2 * y1, d = (dy < 0 ? -1 : 1) * Math.sqrt(Math.max(0, r * r * d2 - D * D)), cx0 = (D * dy - dx * d) / d2, cy0 = (-D * dx - dy * d) / d2, cx1 = (D * dy + dx * d) / d2, cy1 = (-D * dx + dy * d) / d2, dx0 = cx0 - x3, dy0 = cy0 - y3, dx1 = cx1 - x3, dy1 = cy1 - y3;
   8118    if (dx0 * dx0 + dy0 * dy0 > dx1 * dx1 + dy1 * dy1) cx0 = cx1, cy0 = cy1;
   8119    return [ [ cx0 - ox, cy0 - oy ], [ cx0 * r1 / r, cy0 * r1 / r ] ];
   8120  }
   8121  function d3_svg_line(projection) {
   8122    var x = d3_geom_pointX, y = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, tension = .7;
   8123    function line(data) {
   8124      var segments = [], points = [], i = -1, n = data.length, d, fx = d3_functor(x), fy = d3_functor(y);
   8125      function segment() {
   8126        segments.push("M", interpolate(projection(points), tension));
   8127      }
   8128      while (++i < n) {
   8129        if (defined.call(this, d = data[i], i)) {
   8130          points.push([ +fx.call(this, d, i), +fy.call(this, d, i) ]);
   8131        } else if (points.length) {
   8132          segment();
   8133          points = [];
   8134        }
   8135      }
   8136      if (points.length) segment();
   8137      return segments.length ? segments.join("") : null;
   8138    }
   8139    line.x = function(_) {
   8140      if (!arguments.length) return x;
   8141      x = _;
   8142      return line;
   8143    };
   8144    line.y = function(_) {
   8145      if (!arguments.length) return y;
   8146      y = _;
   8147      return line;
   8148    };
   8149    line.defined = function(_) {
   8150      if (!arguments.length) return defined;
   8151      defined = _;
   8152      return line;
   8153    };
   8154    line.interpolate = function(_) {
   8155      if (!arguments.length) return interpolateKey;
   8156      if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
   8157      return line;
   8158    };
   8159    line.tension = function(_) {
   8160      if (!arguments.length) return tension;
   8161      tension = _;
   8162      return line;
   8163    };
   8164    return line;
   8165  }
   8166  d3.svg.line = function() {
   8167    return d3_svg_line(d3_identity);
   8168  };
   8169  var d3_svg_lineInterpolators = d3.map({
   8170    linear: d3_svg_lineLinear,
   8171    "linear-closed": d3_svg_lineLinearClosed,
   8172    step: d3_svg_lineStep,
   8173    "step-before": d3_svg_lineStepBefore,
   8174    "step-after": d3_svg_lineStepAfter,
   8175    basis: d3_svg_lineBasis,
   8176    "basis-open": d3_svg_lineBasisOpen,
   8177    "basis-closed": d3_svg_lineBasisClosed,
   8178    bundle: d3_svg_lineBundle,
   8179    cardinal: d3_svg_lineCardinal,
   8180    "cardinal-open": d3_svg_lineCardinalOpen,
   8181    "cardinal-closed": d3_svg_lineCardinalClosed,
   8182    monotone: d3_svg_lineMonotone
   8183  });
   8184  d3_svg_lineInterpolators.forEach(function(key, value) {
   8185    value.key = key;
   8186    value.closed = /-closed$/.test(key);
   8187  });
   8188  function d3_svg_lineLinear(points) {
   8189    return points.length > 1 ? points.join("L") : points + "Z";
   8190  }
   8191  function d3_svg_lineLinearClosed(points) {
   8192    return points.join("L") + "Z";
   8193  }
   8194  function d3_svg_lineStep(points) {
   8195    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
   8196    while (++i < n) path.push("H", (p[0] + (p = points[i])[0]) / 2, "V", p[1]);
   8197    if (n > 1) path.push("H", p[0]);
   8198    return path.join("");
   8199  }
   8200  function d3_svg_lineStepBefore(points) {
   8201    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
   8202    while (++i < n) path.push("V", (p = points[i])[1], "H", p[0]);
   8203    return path.join("");
   8204  }
   8205  function d3_svg_lineStepAfter(points) {
   8206    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
   8207    while (++i < n) path.push("H", (p = points[i])[0], "V", p[1]);
   8208    return path.join("");
   8209  }
   8210  function d3_svg_lineCardinalOpen(points, tension) {
   8211    return points.length < 4 ? d3_svg_lineLinear(points) : points[1] + d3_svg_lineHermite(points.slice(1, -1), d3_svg_lineCardinalTangents(points, tension));
   8212  }
   8213  function d3_svg_lineCardinalClosed(points, tension) {
   8214    return points.length < 3 ? d3_svg_lineLinearClosed(points) : points[0] + d3_svg_lineHermite((points.push(points[0]), 
   8215    points), d3_svg_lineCardinalTangents([ points[points.length - 2] ].concat(points, [ points[1] ]), tension));
   8216  }
   8217  function d3_svg_lineCardinal(points, tension) {
   8218    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineCardinalTangents(points, tension));
   8219  }
   8220  function d3_svg_lineHermite(points, tangents) {
   8221    if (tangents.length < 1 || points.length != tangents.length && points.length != tangents.length + 2) {
   8222      return d3_svg_lineLinear(points);
   8223    }
   8224    var quad = points.length != tangents.length, path = "", p0 = points[0], p = points[1], t0 = tangents[0], t = t0, pi = 1;
   8225    if (quad) {
   8226      path += "Q" + (p[0] - t0[0] * 2 / 3) + "," + (p[1] - t0[1] * 2 / 3) + "," + p[0] + "," + p[1];
   8227      p0 = points[1];
   8228      pi = 2;
   8229    }
   8230    if (tangents.length > 1) {
   8231      t = tangents[1];
   8232      p = points[pi];
   8233      pi++;
   8234      path += "C" + (p0[0] + t0[0]) + "," + (p0[1] + t0[1]) + "," + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
   8235      for (var i = 2; i < tangents.length; i++, pi++) {
   8236        p = points[pi];
   8237        t = tangents[i];
   8238        path += "S" + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
   8239      }
   8240    }
   8241    if (quad) {
   8242      var lp = points[pi];
   8243      path += "Q" + (p[0] + t[0] * 2 / 3) + "," + (p[1] + t[1] * 2 / 3) + "," + lp[0] + "," + lp[1];
   8244    }
   8245    return path;
   8246  }
   8247  function d3_svg_lineCardinalTangents(points, tension) {
   8248    var tangents = [], a = (1 - tension) / 2, p0, p1 = points[0], p2 = points[1], i = 1, n = points.length;
   8249    while (++i < n) {
   8250      p0 = p1;
   8251      p1 = p2;
   8252      p2 = points[i];
   8253      tangents.push([ a * (p2[0] - p0[0]), a * (p2[1] - p0[1]) ]);
   8254    }
   8255    return tangents;
   8256  }
   8257  function d3_svg_lineBasis(points) {
   8258    if (points.length < 3) return d3_svg_lineLinear(points);
   8259    var i = 1, n = points.length, pi = points[0], x0 = pi[0], y0 = pi[1], px = [ x0, x0, x0, (pi = points[1])[0] ], py = [ y0, y0, y0, pi[1] ], path = [ x0, ",", y0, "L", d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
   8260    points.push(points[n - 1]);
   8261    while (++i <= n) {
   8262      pi = points[i];
   8263      px.shift();
   8264      px.push(pi[0]);
   8265      py.shift();
   8266      py.push(pi[1]);
   8267      d3_svg_lineBasisBezier(path, px, py);
   8268    }
   8269    points.pop();
   8270    path.push("L", pi);
   8271    return path.join("");
   8272  }
   8273  function d3_svg_lineBasisOpen(points) {
   8274    if (points.length < 4) return d3_svg_lineLinear(points);
   8275    var path = [], i = -1, n = points.length, pi, px = [ 0 ], py = [ 0 ];
   8276    while (++i < 3) {
   8277      pi = points[i];
   8278      px.push(pi[0]);
   8279      py.push(pi[1]);
   8280    }
   8281    path.push(d3_svg_lineDot4(d3_svg_lineBasisBezier3, px) + "," + d3_svg_lineDot4(d3_svg_lineBasisBezier3, py));
   8282    --i;
   8283    while (++i < n) {
   8284      pi = points[i];
   8285      px.shift();
   8286      px.push(pi[0]);
   8287      py.shift();
   8288      py.push(pi[1]);
   8289      d3_svg_lineBasisBezier(path, px, py);
   8290    }
   8291    return path.join("");
   8292  }
   8293  function d3_svg_lineBasisClosed(points) {
   8294    var path, i = -1, n = points.length, m = n + 4, pi, px = [], py = [];
   8295    while (++i < 4) {
   8296      pi = points[i % n];
   8297      px.push(pi[0]);
   8298      py.push(pi[1]);
   8299    }
   8300    path = [ d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
   8301    --i;
   8302    while (++i < m) {
   8303      pi = points[i % n];
   8304      px.shift();
   8305      px.push(pi[0]);
   8306      py.shift();
   8307      py.push(pi[1]);
   8308      d3_svg_lineBasisBezier(path, px, py);
   8309    }
   8310    return path.join("");
   8311  }
   8312  function d3_svg_lineBundle(points, tension) {
   8313    var n = points.length - 1;
   8314    if (n) {
   8315      var x0 = points[0][0], y0 = points[0][1], dx = points[n][0] - x0, dy = points[n][1] - y0, i = -1, p, t;
   8316      while (++i <= n) {
   8317        p = points[i];
   8318        t = i / n;
   8319        p[0] = tension * p[0] + (1 - tension) * (x0 + t * dx);
   8320        p[1] = tension * p[1] + (1 - tension) * (y0 + t * dy);
   8321      }
   8322    }
   8323    return d3_svg_lineBasis(points);
   8324  }
   8325  function d3_svg_lineDot4(a, b) {
   8326    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
   8327  }
   8328  var d3_svg_lineBasisBezier1 = [ 0, 2 / 3, 1 / 3, 0 ], d3_svg_lineBasisBezier2 = [ 0, 1 / 3, 2 / 3, 0 ], d3_svg_lineBasisBezier3 = [ 0, 1 / 6, 2 / 3, 1 / 6 ];
   8329  function d3_svg_lineBasisBezier(path, x, y) {
   8330    path.push("C", d3_svg_lineDot4(d3_svg_lineBasisBezier1, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier1, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, y));
   8331  }
   8332  function d3_svg_lineSlope(p0, p1) {
   8333    return (p1[1] - p0[1]) / (p1[0] - p0[0]);
   8334  }
   8335  function d3_svg_lineFiniteDifferences(points) {
   8336    var i = 0, j = points.length - 1, m = [], p0 = points[0], p1 = points[1], d = m[0] = d3_svg_lineSlope(p0, p1);
   8337    while (++i < j) {
   8338      m[i] = (d + (d = d3_svg_lineSlope(p0 = p1, p1 = points[i + 1]))) / 2;
   8339    }
   8340    m[i] = d;
   8341    return m;
   8342  }
   8343  function d3_svg_lineMonotoneTangents(points) {
   8344    var tangents = [], d, a, b, s, m = d3_svg_lineFiniteDifferences(points), i = -1, j = points.length - 1;
   8345    while (++i < j) {
   8346      d = d3_svg_lineSlope(points[i], points[i + 1]);
   8347      if (abs(d) < ε) {
   8348        m[i] = m[i + 1] = 0;
   8349      } else {
   8350        a = m[i] / d;
   8351        b = m[i + 1] / d;
   8352        s = a * a + b * b;
   8353        if (s > 9) {
   8354          s = d * 3 / Math.sqrt(s);
   8355          m[i] = s * a;
   8356          m[i + 1] = s * b;
   8357        }
   8358      }
   8359    }
   8360    i = -1;
   8361    while (++i <= j) {
   8362      s = (points[Math.min(j, i + 1)][0] - points[Math.max(0, i - 1)][0]) / (6 * (1 + m[i] * m[i]));
   8363      tangents.push([ s || 0, m[i] * s || 0 ]);
   8364    }
   8365    return tangents;
   8366  }
   8367  function d3_svg_lineMonotone(points) {
   8368    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineMonotoneTangents(points));
   8369  }
   8370  d3.svg.line.radial = function() {
   8371    var line = d3_svg_line(d3_svg_lineRadial);
   8372    line.radius = line.x, delete line.x;
   8373    line.angle = line.y, delete line.y;
   8374    return line;
   8375  };
   8376  function d3_svg_lineRadial(points) {
   8377    var point, i = -1, n = points.length, r, a;
   8378    while (++i < n) {
   8379      point = points[i];
   8380      r = point[0];
   8381      a = point[1] - halfπ;
   8382      point[0] = r * Math.cos(a);
   8383      point[1] = r * Math.sin(a);
   8384    }
   8385    return points;
   8386  }
   8387  function d3_svg_area(projection) {
   8388    var x0 = d3_geom_pointX, x1 = d3_geom_pointX, y0 = 0, y1 = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, interpolateReverse = interpolate, L = "L", tension = .7;
   8389    function area(data) {
   8390      var segments = [], points0 = [], points1 = [], i = -1, n = data.length, d, fx0 = d3_functor(x0), fy0 = d3_functor(y0), fx1 = x0 === x1 ? function() {
   8391        return x;
   8392      } : d3_functor(x1), fy1 = y0 === y1 ? function() {
   8393        return y;
   8394      } : d3_functor(y1), x, y;
   8395      function segment() {
   8396        segments.push("M", interpolate(projection(points1), tension), L, interpolateReverse(projection(points0.reverse()), tension), "Z");
   8397      }
   8398      while (++i < n) {
   8399        if (defined.call(this, d = data[i], i)) {
   8400          points0.push([ x = +fx0.call(this, d, i), y = +fy0.call(this, d, i) ]);
   8401          points1.push([ +fx1.call(this, d, i), +fy1.call(this, d, i) ]);
   8402        } else if (points0.length) {
   8403          segment();
   8404          points0 = [];
   8405          points1 = [];
   8406        }
   8407      }
   8408      if (points0.length) segment();
   8409      return segments.length ? segments.join("") : null;
   8410    }
   8411    area.x = function(_) {
   8412      if (!arguments.length) return x1;
   8413      x0 = x1 = _;
   8414      return area;
   8415    };
   8416    area.x0 = function(_) {
   8417      if (!arguments.length) return x0;
   8418      x0 = _;
   8419      return area;
   8420    };
   8421    area.x1 = function(_) {
   8422      if (!arguments.length) return x1;
   8423      x1 = _;
   8424      return area;
   8425    };
   8426    area.y = function(_) {
   8427      if (!arguments.length) return y1;
   8428      y0 = y1 = _;
   8429      return area;
   8430    };
   8431    area.y0 = function(_) {
   8432      if (!arguments.length) return y0;
   8433      y0 = _;
   8434      return area;
   8435    };
   8436    area.y1 = function(_) {
   8437      if (!arguments.length) return y1;
   8438      y1 = _;
   8439      return area;
   8440    };
   8441    area.defined = function(_) {
   8442      if (!arguments.length) return defined;
   8443      defined = _;
   8444      return area;
   8445    };
   8446    area.interpolate = function(_) {
   8447      if (!arguments.length) return interpolateKey;
   8448      if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
   8449      interpolateReverse = interpolate.reverse || interpolate;
   8450      L = interpolate.closed ? "M" : "L";
   8451      return area;
   8452    };
   8453    area.tension = function(_) {
   8454      if (!arguments.length) return tension;
   8455      tension = _;
   8456      return area;
   8457    };
   8458    return area;
   8459  }
   8460  d3_svg_lineStepBefore.reverse = d3_svg_lineStepAfter;
   8461  d3_svg_lineStepAfter.reverse = d3_svg_lineStepBefore;
   8462  d3.svg.area = function() {
   8463    return d3_svg_area(d3_identity);
   8464  };
   8465  d3.svg.area.radial = function() {
   8466    var area = d3_svg_area(d3_svg_lineRadial);
   8467    area.radius = area.x, delete area.x;
   8468    area.innerRadius = area.x0, delete area.x0;
   8469    area.outerRadius = area.x1, delete area.x1;
   8470    area.angle = area.y, delete area.y;
   8471    area.startAngle = area.y0, delete area.y0;
   8472    area.endAngle = area.y1, delete area.y1;
   8473    return area;
   8474  };
   8475  d3.svg.chord = function() {
   8476    var source = d3_source, target = d3_target, radius = d3_svg_chordRadius, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle;
   8477    function chord(d, i) {
   8478      var s = subgroup(this, source, d, i), t = subgroup(this, target, d, i);
   8479      return "M" + s.p0 + arc(s.r, s.p1, s.a1 - s.a0) + (equals(s, t) ? curve(s.r, s.p1, s.r, s.p0) : curve(s.r, s.p1, t.r, t.p0) + arc(t.r, t.p1, t.a1 - t.a0) + curve(t.r, t.p1, s.r, s.p0)) + "Z";
   8480    }
   8481    function subgroup(self, f, d, i) {
   8482      var subgroup = f.call(self, d, i), r = radius.call(self, subgroup, i), a0 = startAngle.call(self, subgroup, i) - halfπ, a1 = endAngle.call(self, subgroup, i) - halfπ;
   8483      return {
   8484        r: r,
   8485        a0: a0,
   8486        a1: a1,
   8487        p0: [ r * Math.cos(a0), r * Math.sin(a0) ],
   8488        p1: [ r * Math.cos(a1), r * Math.sin(a1) ]
   8489      };
   8490    }
   8491    function equals(a, b) {
   8492      return a.a0 == b.a0 && a.a1 == b.a1;
   8493    }
   8494    function arc(r, p, a) {
   8495      return "A" + r + "," + r + " 0 " + +(a > π) + ",1 " + p;
   8496    }
   8497    function curve(r0, p0, r1, p1) {
   8498      return "Q 0,0 " + p1;
   8499    }
   8500    chord.radius = function(v) {
   8501      if (!arguments.length) return radius;
   8502      radius = d3_functor(v);
   8503      return chord;
   8504    };
   8505    chord.source = function(v) {
   8506      if (!arguments.length) return source;
   8507      source = d3_functor(v);
   8508      return chord;
   8509    };
   8510    chord.target = function(v) {
   8511      if (!arguments.length) return target;
   8512      target = d3_functor(v);
   8513      return chord;
   8514    };
   8515    chord.startAngle = function(v) {
   8516      if (!arguments.length) return startAngle;
   8517      startAngle = d3_functor(v);
   8518      return chord;
   8519    };
   8520    chord.endAngle = function(v) {
   8521      if (!arguments.length) return endAngle;
   8522      endAngle = d3_functor(v);
   8523      return chord;
   8524    };
   8525    return chord;
   8526  };
   8527  function d3_svg_chordRadius(d) {
   8528    return d.radius;
   8529  }
   8530  d3.svg.diagonal = function() {
   8531    var source = d3_source, target = d3_target, projection = d3_svg_diagonalProjection;
   8532    function diagonal(d, i) {
   8533      var p0 = source.call(this, d, i), p3 = target.call(this, d, i), m = (p0.y + p3.y) / 2, p = [ p0, {
   8534        x: p0.x,
   8535        y: m
   8536      }, {
   8537        x: p3.x,
   8538        y: m
   8539      }, p3 ];
   8540      p = p.map(projection);
   8541      return "M" + p[0] + "C" + p[1] + " " + p[2] + " " + p[3];
   8542    }
   8543    diagonal.source = function(x) {
   8544      if (!arguments.length) return source;
   8545      source = d3_functor(x);
   8546      return diagonal;
   8547    };
   8548    diagonal.target = function(x) {
   8549      if (!arguments.length) return target;
   8550      target = d3_functor(x);
   8551      return diagonal;
   8552    };
   8553    diagonal.projection = function(x) {
   8554      if (!arguments.length) return projection;
   8555      projection = x;
   8556      return diagonal;
   8557    };
   8558    return diagonal;
   8559  };
   8560  function d3_svg_diagonalProjection(d) {
   8561    return [ d.x, d.y ];
   8562  }
   8563  d3.svg.diagonal.radial = function() {
   8564    var diagonal = d3.svg.diagonal(), projection = d3_svg_diagonalProjection, projection_ = diagonal.projection;
   8565    diagonal.projection = function(x) {
   8566      return arguments.length ? projection_(d3_svg_diagonalRadialProjection(projection = x)) : projection;
   8567    };
   8568    return diagonal;
   8569  };
   8570  function d3_svg_diagonalRadialProjection(projection) {
   8571    return function() {
   8572      var d = projection.apply(this, arguments), r = d[0], a = d[1] - halfπ;
   8573      return [ r * Math.cos(a), r * Math.sin(a) ];
   8574    };
   8575  }
   8576  d3.svg.symbol = function() {
   8577    var type = d3_svg_symbolType, size = d3_svg_symbolSize;
   8578    function symbol(d, i) {
   8579      return (d3_svg_symbols.get(type.call(this, d, i)) || d3_svg_symbolCircle)(size.call(this, d, i));
   8580    }
   8581    symbol.type = function(x) {
   8582      if (!arguments.length) return type;
   8583      type = d3_functor(x);
   8584      return symbol;
   8585    };
   8586    symbol.size = function(x) {
   8587      if (!arguments.length) return size;
   8588      size = d3_functor(x);
   8589      return symbol;
   8590    };
   8591    return symbol;
   8592  };
   8593  function d3_svg_symbolSize() {
   8594    return 64;
   8595  }
   8596  function d3_svg_symbolType() {
   8597    return "circle";
   8598  }
   8599  function d3_svg_symbolCircle(size) {
   8600    var r = Math.sqrt(size / π);
   8601    return "M0," + r + "A" + r + "," + r + " 0 1,1 0," + -r + "A" + r + "," + r + " 0 1,1 0," + r + "Z";
   8602  }
   8603  var d3_svg_symbols = d3.map({
   8604    circle: d3_svg_symbolCircle,
   8605    cross: function(size) {
   8606      var r = Math.sqrt(size / 5) / 2;
   8607      return "M" + -3 * r + "," + -r + "H" + -r + "V" + -3 * r + "H" + r + "V" + -r + "H" + 3 * r + "V" + r + "H" + r + "V" + 3 * r + "H" + -r + "V" + r + "H" + -3 * r + "Z";
   8608    },
   8609    diamond: function(size) {
   8610      var ry = Math.sqrt(size / (2 * d3_svg_symbolTan30)), rx = ry * d3_svg_symbolTan30;
   8611      return "M0," + -ry + "L" + rx + ",0" + " 0," + ry + " " + -rx + ",0" + "Z";
   8612    },
   8613    square: function(size) {
   8614      var r = Math.sqrt(size) / 2;
   8615      return "M" + -r + "," + -r + "L" + r + "," + -r + " " + r + "," + r + " " + -r + "," + r + "Z";
   8616    },
   8617    "triangle-down": function(size) {
   8618      var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
   8619      return "M0," + ry + "L" + rx + "," + -ry + " " + -rx + "," + -ry + "Z";
   8620    },
   8621    "triangle-up": function(size) {
   8622      var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
   8623      return "M0," + -ry + "L" + rx + "," + ry + " " + -rx + "," + ry + "Z";
   8624    }
   8625  });
   8626  d3.svg.symbolTypes = d3_svg_symbols.keys();
   8627  var d3_svg_symbolSqrt3 = Math.sqrt(3), d3_svg_symbolTan30 = Math.tan(30 * d3_radians);
   8628  d3_selectionPrototype.transition = function(name) {
   8629    var id = d3_transitionInheritId || ++d3_transitionId, ns = d3_transitionNamespace(name), subgroups = [], subgroup, node, transition = d3_transitionInherit || {
   8630      time: Date.now(),
   8631      ease: d3_ease_cubicInOut,
   8632      delay: 0,
   8633      duration: 250
   8634    };
   8635    for (var j = -1, m = this.length; ++j < m; ) {
   8636      subgroups.push(subgroup = []);
   8637      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
   8638        if (node = group[i]) d3_transitionNode(node, i, ns, id, transition);
   8639        subgroup.push(node);
   8640      }
   8641    }
   8642    return d3_transition(subgroups, ns, id);
   8643  };
   8644  d3_selectionPrototype.interrupt = function(name) {
   8645    return this.each(name == null ? d3_selection_interrupt : d3_selection_interruptNS(d3_transitionNamespace(name)));
   8646  };
   8647  var d3_selection_interrupt = d3_selection_interruptNS(d3_transitionNamespace());
   8648  function d3_selection_interruptNS(ns) {
   8649    return function() {
   8650      var lock, activeId, active;
   8651      if ((lock = this[ns]) && (active = lock[activeId = lock.active])) {
   8652        active.timer.c = null;
   8653        active.timer.t = NaN;
   8654        if (--lock.count) delete lock[activeId]; else delete this[ns];
   8655        lock.active += .5;
   8656        active.event && active.event.interrupt.call(this, this.__data__, active.index);
   8657      }
   8658    };
   8659  }
   8660  function d3_transition(groups, ns, id) {
   8661    d3_subclass(groups, d3_transitionPrototype);
   8662    groups.namespace = ns;
   8663    groups.id = id;
   8664    return groups;
   8665  }
   8666  var d3_transitionPrototype = [], d3_transitionId = 0, d3_transitionInheritId, d3_transitionInherit;
   8667  d3_transitionPrototype.call = d3_selectionPrototype.call;
   8668  d3_transitionPrototype.empty = d3_selectionPrototype.empty;
   8669  d3_transitionPrototype.node = d3_selectionPrototype.node;
   8670  d3_transitionPrototype.size = d3_selectionPrototype.size;
   8671  d3.transition = function(selection, name) {
   8672    return selection && selection.transition ? d3_transitionInheritId ? selection.transition(name) : selection : d3.selection().transition(selection);
   8673  };
   8674  d3.transition.prototype = d3_transitionPrototype;
   8675  d3_transitionPrototype.select = function(selector) {
   8676    var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnode, node;
   8677    selector = d3_selection_selector(selector);
   8678    for (var j = -1, m = this.length; ++j < m; ) {
   8679      subgroups.push(subgroup = []);
   8680      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
   8681        if ((node = group[i]) && (subnode = selector.call(node, node.__data__, i, j))) {
   8682          if ("__data__" in node) subnode.__data__ = node.__data__;
   8683          d3_transitionNode(subnode, i, ns, id, node[ns][id]);
   8684          subgroup.push(subnode);
   8685        } else {
   8686          subgroup.push(null);
   8687        }
   8688      }
   8689    }
   8690    return d3_transition(subgroups, ns, id);
   8691  };
   8692  d3_transitionPrototype.selectAll = function(selector) {
   8693    var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnodes, node, subnode, transition;
   8694    selector = d3_selection_selectorAll(selector);
   8695    for (var j = -1, m = this.length; ++j < m; ) {
   8696      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
   8697        if (node = group[i]) {
   8698          transition = node[ns][id];
   8699          subnodes = selector.call(node, node.__data__, i, j);
   8700          subgroups.push(subgroup = []);
   8701          for (var k = -1, o = subnodes.length; ++k < o; ) {
   8702            if (subnode = subnodes[k]) d3_transitionNode(subnode, k, ns, id, transition);
   8703            subgroup.push(subnode);
   8704          }
   8705        }
   8706      }
   8707    }
   8708    return d3_transition(subgroups, ns, id);
   8709  };
   8710  d3_transitionPrototype.filter = function(filter) {
   8711    var subgroups = [], subgroup, group, node;
   8712    if (typeof filter !== "function") filter = d3_selection_filter(filter);
   8713    for (var j = 0, m = this.length; j < m; j++) {
   8714      subgroups.push(subgroup = []);
   8715      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
   8716        if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
   8717          subgroup.push(node);
   8718        }
   8719      }
   8720    }
   8721    return d3_transition(subgroups, this.namespace, this.id);
   8722  };
   8723  d3_transitionPrototype.tween = function(name, tween) {
   8724    var id = this.id, ns = this.namespace;
   8725    if (arguments.length < 2) return this.node()[ns][id].tween.get(name);
   8726    return d3_selection_each(this, tween == null ? function(node) {
   8727      node[ns][id].tween.remove(name);
   8728    } : function(node) {
   8729      node[ns][id].tween.set(name, tween);
   8730    });
   8731  };
   8732  function d3_transition_tween(groups, name, value, tween) {
   8733    var id = groups.id, ns = groups.namespace;
   8734    return d3_selection_each(groups, typeof value === "function" ? function(node, i, j) {
   8735      node[ns][id].tween.set(name, tween(value.call(node, node.__data__, i, j)));
   8736    } : (value = tween(value), function(node) {
   8737      node[ns][id].tween.set(name, value);
   8738    }));
   8739  }
   8740  d3_transitionPrototype.attr = function(nameNS, value) {
   8741    if (arguments.length < 2) {
   8742      for (value in nameNS) this.attr(value, nameNS[value]);
   8743      return this;
   8744    }
   8745    var interpolate = nameNS == "transform" ? d3_interpolateTransform : d3_interpolate, name = d3.ns.qualify(nameNS);
   8746    function attrNull() {
   8747      this.removeAttribute(name);
   8748    }
   8749    function attrNullNS() {
   8750      this.removeAttributeNS(name.space, name.local);
   8751    }
   8752    function attrTween(b) {
   8753      return b == null ? attrNull : (b += "", function() {
   8754        var a = this.getAttribute(name), i;
   8755        return a !== b && (i = interpolate(a, b), function(t) {
   8756          this.setAttribute(name, i(t));
   8757        });
   8758      });
   8759    }
   8760    function attrTweenNS(b) {
   8761      return b == null ? attrNullNS : (b += "", function() {
   8762        var a = this.getAttributeNS(name.space, name.local), i;
   8763        return a !== b && (i = interpolate(a, b), function(t) {
   8764          this.setAttributeNS(name.space, name.local, i(t));
   8765        });
   8766      });
   8767    }
   8768    return d3_transition_tween(this, "attr." + nameNS, value, name.local ? attrTweenNS : attrTween);
   8769  };
   8770  d3_transitionPrototype.attrTween = function(nameNS, tween) {
   8771    var name = d3.ns.qualify(nameNS);
   8772    function attrTween(d, i) {
   8773      var f = tween.call(this, d, i, this.getAttribute(name));
   8774      return f && function(t) {
   8775        this.setAttribute(name, f(t));
   8776      };
   8777    }
   8778    function attrTweenNS(d, i) {
   8779      var f = tween.call(this, d, i, this.getAttributeNS(name.space, name.local));
   8780      return f && function(t) {
   8781        this.setAttributeNS(name.space, name.local, f(t));
   8782      };
   8783    }
   8784    return this.tween("attr." + nameNS, name.local ? attrTweenNS : attrTween);
   8785  };
   8786  d3_transitionPrototype.style = function(name, value, priority) {
   8787    var n = arguments.length;
   8788    if (n < 3) {
   8789      if (typeof name !== "string") {
   8790        if (n < 2) value = "";
   8791        for (priority in name) this.style(priority, name[priority], value);
   8792        return this;
   8793      }
   8794      priority = "";
   8795    }
   8796    function styleNull() {
   8797      this.style.removeProperty(name);
   8798    }
   8799    function styleString(b) {
   8800      return b == null ? styleNull : (b += "", function() {
   8801        var a = d3_window(this).getComputedStyle(this, null).getPropertyValue(name), i;
   8802        return a !== b && (i = d3_interpolate(a, b), function(t) {
   8803          this.style.setProperty(name, i(t), priority);
   8804        });
   8805      });
   8806    }
   8807    return d3_transition_tween(this, "style." + name, value, styleString);
   8808  };
   8809  d3_transitionPrototype.styleTween = function(name, tween, priority) {
   8810    if (arguments.length < 3) priority = "";
   8811    function styleTween(d, i) {
   8812      var f = tween.call(this, d, i, d3_window(this).getComputedStyle(this, null).getPropertyValue(name));
   8813      return f && function(t) {
   8814        this.style.setProperty(name, f(t), priority);
   8815      };
   8816    }
   8817    return this.tween("style." + name, styleTween);
   8818  };
   8819  d3_transitionPrototype.text = function(value) {
   8820    return d3_transition_tween(this, "text", value, d3_transition_text);
   8821  };
   8822  function d3_transition_text(b) {
   8823    if (b == null) b = "";
   8824    return function() {
   8825      this.textContent = b;
   8826    };
   8827  }
   8828  d3_transitionPrototype.remove = function() {
   8829    var ns = this.namespace;
   8830    return this.each("end.transition", function() {
   8831      var p;
   8832      if (this[ns].count < 2 && (p = this.parentNode)) p.removeChild(this);
   8833    });
   8834  };
   8835  d3_transitionPrototype.ease = function(value) {
   8836    var id = this.id, ns = this.namespace;
   8837    if (arguments.length < 1) return this.node()[ns][id].ease;
   8838    if (typeof value !== "function") value = d3.ease.apply(d3, arguments);
   8839    return d3_selection_each(this, function(node) {
   8840      node[ns][id].ease = value;
   8841    });
   8842  };
   8843  d3_transitionPrototype.delay = function(value) {
   8844    var id = this.id, ns = this.namespace;
   8845    if (arguments.length < 1) return this.node()[ns][id].delay;
   8846    return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
   8847      node[ns][id].delay = +value.call(node, node.__data__, i, j);
   8848    } : (value = +value, function(node) {
   8849      node[ns][id].delay = value;
   8850    }));
   8851  };
   8852  d3_transitionPrototype.duration = function(value) {
   8853    var id = this.id, ns = this.namespace;
   8854    if (arguments.length < 1) return this.node()[ns][id].duration;
   8855    return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
   8856      node[ns][id].duration = Math.max(1, value.call(node, node.__data__, i, j));
   8857    } : (value = Math.max(1, value), function(node) {
   8858      node[ns][id].duration = value;
   8859    }));
   8860  };
   8861  d3_transitionPrototype.each = function(type, listener) {
   8862    var id = this.id, ns = this.namespace;
   8863    if (arguments.length < 2) {
   8864      var inherit = d3_transitionInherit, inheritId = d3_transitionInheritId;
   8865      try {
   8866        d3_transitionInheritId = id;
   8867        d3_selection_each(this, function(node, i, j) {
   8868          d3_transitionInherit = node[ns][id];
   8869          type.call(node, node.__data__, i, j);
   8870        });
   8871      } finally {
   8872        d3_transitionInherit = inherit;
   8873        d3_transitionInheritId = inheritId;
   8874      }
   8875    } else {
   8876      d3_selection_each(this, function(node) {
   8877        var transition = node[ns][id];
   8878        (transition.event || (transition.event = d3.dispatch("start", "end", "interrupt"))).on(type, listener);
   8879      });
   8880    }
   8881    return this;
   8882  };
   8883  d3_transitionPrototype.transition = function() {
   8884    var id0 = this.id, id1 = ++d3_transitionId, ns = this.namespace, subgroups = [], subgroup, group, node, transition;
   8885    for (var j = 0, m = this.length; j < m; j++) {
   8886      subgroups.push(subgroup = []);
   8887      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
   8888        if (node = group[i]) {
   8889          transition = node[ns][id0];
   8890          d3_transitionNode(node, i, ns, id1, {
   8891            time: transition.time,
   8892            ease: transition.ease,
   8893            delay: transition.delay + transition.duration,
   8894            duration: transition.duration
   8895          });
   8896        }
   8897        subgroup.push(node);
   8898      }
   8899    }
   8900    return d3_transition(subgroups, ns, id1);
   8901  };
   8902  function d3_transitionNamespace(name) {
   8903    return name == null ? "__transition__" : "__transition_" + name + "__";
   8904  }
   8905  function d3_transitionNode(node, i, ns, id, inherit) {
   8906    var lock = node[ns] || (node[ns] = {
   8907      active: 0,
   8908      count: 0
   8909    }), transition = lock[id], time, timer, duration, ease, tweens;
   8910    function schedule(elapsed) {
   8911      var delay = transition.delay;
   8912      timer.t = delay + time;
   8913      if (delay <= elapsed) return start(elapsed - delay);
   8914      timer.c = start;
   8915    }
   8916    function start(elapsed) {
   8917      var activeId = lock.active, active = lock[activeId];
   8918      if (active) {
   8919        active.timer.c = null;
   8920        active.timer.t = NaN;
   8921        --lock.count;
   8922        delete lock[activeId];
   8923        active.event && active.event.interrupt.call(node, node.__data__, active.index);
   8924      }
   8925      for (var cancelId in lock) {
   8926        if (+cancelId < id) {
   8927          var cancel = lock[cancelId];
   8928          cancel.timer.c = null;
   8929          cancel.timer.t = NaN;
   8930          --lock.count;
   8931          delete lock[cancelId];
   8932        }
   8933      }
   8934      timer.c = tick;
   8935      d3_timer(function() {
   8936        if (timer.c && tick(elapsed || 1)) {
   8937          timer.c = null;
   8938          timer.t = NaN;
   8939        }
   8940        return 1;
   8941      }, 0, time);
   8942      lock.active = id;
   8943      transition.event && transition.event.start.call(node, node.__data__, i);
   8944      tweens = [];
   8945      transition.tween.forEach(function(key, value) {
   8946        if (value = value.call(node, node.__data__, i)) {
   8947          tweens.push(value);
   8948        }
   8949      });
   8950      ease = transition.ease;
   8951      duration = transition.duration;
   8952    }
   8953    function tick(elapsed) {
   8954      var t = elapsed / duration, e = ease(t), n = tweens.length;
   8955      while (n > 0) {
   8956        tweens[--n].call(node, e);
   8957      }
   8958      if (t >= 1) {
   8959        transition.event && transition.event.end.call(node, node.__data__, i);
   8960        if (--lock.count) delete lock[id]; else delete node[ns];
   8961        return 1;
   8962      }
   8963    }
   8964    if (!transition) {
   8965      time = inherit.time;
   8966      timer = d3_timer(schedule, 0, time);
   8967      transition = lock[id] = {
   8968        tween: new d3_Map(),
   8969        time: time,
   8970        timer: timer,
   8971        delay: inherit.delay,
   8972        duration: inherit.duration,
   8973        ease: inherit.ease,
   8974        index: i
   8975      };
   8976      inherit = null;
   8977      ++lock.count;
   8978    }
   8979  }
   8980  d3.svg.axis = function() {
   8981    var scale = d3.scale.linear(), orient = d3_svg_axisDefaultOrient, innerTickSize = 6, outerTickSize = 6, tickPadding = 3, tickArguments_ = [ 10 ], tickValues = null, tickFormat_;
   8982    function axis(g) {
   8983      g.each(function() {
   8984        var g = d3.select(this);
   8985        var scale0 = this.__chart__ || scale, scale1 = this.__chart__ = scale.copy();
   8986        var ticks = tickValues == null ? scale1.ticks ? scale1.ticks.apply(scale1, tickArguments_) : scale1.domain() : tickValues, tickFormat = tickFormat_ == null ? scale1.tickFormat ? scale1.tickFormat.apply(scale1, tickArguments_) : d3_identity : tickFormat_, tick = g.selectAll(".tick").data(ticks, scale1), tickEnter = tick.enter().insert("g", ".domain").attr("class", "tick").style("opacity", ε), tickExit = d3.transition(tick.exit()).style("opacity", ε).remove(), tickUpdate = d3.transition(tick.order()).style("opacity", 1), tickSpacing = Math.max(innerTickSize, 0) + tickPadding, tickTransform;
   8987        var range = d3_scaleRange(scale1), path = g.selectAll(".domain").data([ 0 ]), pathUpdate = (path.enter().append("path").attr("class", "domain"), 
   8988        d3.transition(path));
   8989        tickEnter.append("line");
   8990        tickEnter.append("text");
   8991        var lineEnter = tickEnter.select("line"), lineUpdate = tickUpdate.select("line"), text = tick.select("text").text(tickFormat), textEnter = tickEnter.select("text"), textUpdate = tickUpdate.select("text"), sign = orient === "top" || orient === "left" ? -1 : 1, x1, x2, y1, y2;
   8992        if (orient === "bottom" || orient === "top") {
   8993          tickTransform = d3_svg_axisX, x1 = "x", y1 = "y", x2 = "x2", y2 = "y2";
   8994          text.attr("dy", sign < 0 ? "0em" : ".71em").style("text-anchor", "middle");
   8995          pathUpdate.attr("d", "M" + range[0] + "," + sign * outerTickSize + "V0H" + range[1] + "V" + sign * outerTickSize);
   8996        } else {
   8997          tickTransform = d3_svg_axisY, x1 = "y", y1 = "x", x2 = "y2", y2 = "x2";
   8998          text.attr("dy", ".32em").style("text-anchor", sign < 0 ? "end" : "start");
   8999          pathUpdate.attr("d", "M" + sign * outerTickSize + "," + range[0] + "H0V" + range[1] + "H" + sign * outerTickSize);
   9000        }
   9001        lineEnter.attr(y2, sign * innerTickSize);
   9002        textEnter.attr(y1, sign * tickSpacing);
   9003        lineUpdate.attr(x2, 0).attr(y2, sign * innerTickSize);
   9004        textUpdate.attr(x1, 0).attr(y1, sign * tickSpacing);
   9005        if (scale1.rangeBand) {
   9006          var x = scale1, dx = x.rangeBand() / 2;
   9007          scale0 = scale1 = function(d) {
   9008            return x(d) + dx;
   9009          };
   9010        } else if (scale0.rangeBand) {
   9011          scale0 = scale1;
   9012        } else {
   9013          tickExit.call(tickTransform, scale1, scale0);
   9014        }
   9015        tickEnter.call(tickTransform, scale0, scale1);
   9016        tickUpdate.call(tickTransform, scale1, scale1);
   9017      });
   9018    }
   9019    axis.scale = function(x) {
   9020      if (!arguments.length) return scale;
   9021      scale = x;
   9022      return axis;
   9023    };
   9024    axis.orient = function(x) {
   9025      if (!arguments.length) return orient;
   9026      orient = x in d3_svg_axisOrients ? x + "" : d3_svg_axisDefaultOrient;
   9027      return axis;
   9028    };
   9029    axis.ticks = function() {
   9030      if (!arguments.length) return tickArguments_;
   9031      tickArguments_ = d3_array(arguments);
   9032      return axis;
   9033    };
   9034    axis.tickValues = function(x) {
   9035      if (!arguments.length) return tickValues;
   9036      tickValues = x;
   9037      return axis;
   9038    };
   9039    axis.tickFormat = function(x) {
   9040      if (!arguments.length) return tickFormat_;
   9041      tickFormat_ = x;
   9042      return axis;
   9043    };
   9044    axis.tickSize = function(x) {
   9045      var n = arguments.length;
   9046      if (!n) return innerTickSize;
   9047      innerTickSize = +x;
   9048      outerTickSize = +arguments[n - 1];
   9049      return axis;
   9050    };
   9051    axis.innerTickSize = function(x) {
   9052      if (!arguments.length) return innerTickSize;
   9053      innerTickSize = +x;
   9054      return axis;
   9055    };
   9056    axis.outerTickSize = function(x) {
   9057      if (!arguments.length) return outerTickSize;
   9058      outerTickSize = +x;
   9059      return axis;
   9060    };
   9061    axis.tickPadding = function(x) {
   9062      if (!arguments.length) return tickPadding;
   9063      tickPadding = +x;
   9064      return axis;
   9065    };
   9066    axis.tickSubdivide = function() {
   9067      return arguments.length && axis;
   9068    };
   9069    return axis;
   9070  };
   9071  var d3_svg_axisDefaultOrient = "bottom", d3_svg_axisOrients = {
   9072    top: 1,
   9073    right: 1,
   9074    bottom: 1,
   9075    left: 1
   9076  };
   9077  function d3_svg_axisX(selection, x0, x1) {
   9078    selection.attr("transform", function(d) {
   9079      var v0 = x0(d);
   9080      return "translate(" + (isFinite(v0) ? v0 : x1(d)) + ",0)";
   9081    });
   9082  }
   9083  function d3_svg_axisY(selection, y0, y1) {
   9084    selection.attr("transform", function(d) {
   9085      var v0 = y0(d);
   9086      return "translate(0," + (isFinite(v0) ? v0 : y1(d)) + ")";
   9087    });
   9088  }
   9089  d3.svg.brush = function() {
   9090    var event = d3_eventDispatch(brush, "brushstart", "brush", "brushend"), x = null, y = null, xExtent = [ 0, 0 ], yExtent = [ 0, 0 ], xExtentDomain, yExtentDomain, xClamp = true, yClamp = true, resizes = d3_svg_brushResizes[0];
   9091    function brush(g) {
   9092      g.each(function() {
   9093        var g = d3.select(this).style("pointer-events", "all").style("-webkit-tap-highlight-color", "rgba(0,0,0,0)").on("mousedown.brush", brushstart).on("touchstart.brush", brushstart);
   9094        var background = g.selectAll(".background").data([ 0 ]);
   9095        background.enter().append("rect").attr("class", "background").style("visibility", "hidden").style("cursor", "crosshair");
   9096        g.selectAll(".extent").data([ 0 ]).enter().append("rect").attr("class", "extent").style("cursor", "move");
   9097        var resize = g.selectAll(".resize").data(resizes, d3_identity);
   9098        resize.exit().remove();
   9099        resize.enter().append("g").attr("class", function(d) {
   9100          return "resize " + d;
   9101        }).style("cursor", function(d) {
   9102          return d3_svg_brushCursor[d];
   9103        }).append("rect").attr("x", function(d) {
   9104          return /[ew]$/.test(d) ? -3 : null;
   9105        }).attr("y", function(d) {
   9106          return /^[ns]/.test(d) ? -3 : null;
   9107        }).attr("width", 6).attr("height", 6).style("visibility", "hidden");
   9108        resize.style("display", brush.empty() ? "none" : null);
   9109        var gUpdate = d3.transition(g), backgroundUpdate = d3.transition(background), range;
   9110        if (x) {
   9111          range = d3_scaleRange(x);
   9112          backgroundUpdate.attr("x", range[0]).attr("width", range[1] - range[0]);
   9113          redrawX(gUpdate);
   9114        }
   9115        if (y) {
   9116          range = d3_scaleRange(y);
   9117          backgroundUpdate.attr("y", range[0]).attr("height", range[1] - range[0]);
   9118          redrawY(gUpdate);
   9119        }
   9120        redraw(gUpdate);
   9121      });
   9122    }
   9123    brush.event = function(g) {
   9124      g.each(function() {
   9125        var event_ = event.of(this, arguments), extent1 = {
   9126          x: xExtent,
   9127          y: yExtent,
   9128          i: xExtentDomain,
   9129          j: yExtentDomain
   9130        }, extent0 = this.__chart__ || extent1;
   9131        this.__chart__ = extent1;
   9132        if (d3_transitionInheritId) {
   9133          d3.select(this).transition().each("start.brush", function() {
   9134            xExtentDomain = extent0.i;
   9135            yExtentDomain = extent0.j;
   9136            xExtent = extent0.x;
   9137            yExtent = extent0.y;
   9138            event_({
   9139              type: "brushstart"
   9140            });
   9141          }).tween("brush:brush", function() {
   9142            var xi = d3_interpolateArray(xExtent, extent1.x), yi = d3_interpolateArray(yExtent, extent1.y);
   9143            xExtentDomain = yExtentDomain = null;
   9144            return function(t) {
   9145              xExtent = extent1.x = xi(t);
   9146              yExtent = extent1.y = yi(t);
   9147              event_({
   9148                type: "brush",
   9149                mode: "resize"
   9150              });
   9151            };
   9152          }).each("end.brush", function() {
   9153            xExtentDomain = extent1.i;
   9154            yExtentDomain = extent1.j;
   9155            event_({
   9156              type: "brush",
   9157              mode: "resize"
   9158            });
   9159            event_({
   9160              type: "brushend"
   9161            });
   9162          });
   9163        } else {
   9164          event_({
   9165            type: "brushstart"
   9166          });
   9167          event_({
   9168            type: "brush",
   9169            mode: "resize"
   9170          });
   9171          event_({
   9172            type: "brushend"
   9173          });
   9174        }
   9175      });
   9176    };
   9177    function redraw(g) {
   9178      g.selectAll(".resize").attr("transform", function(d) {
   9179        return "translate(" + xExtent[+/e$/.test(d)] + "," + yExtent[+/^s/.test(d)] + ")";
   9180      });
   9181    }
   9182    function redrawX(g) {
   9183      g.select(".extent").attr("x", xExtent[0]);
   9184      g.selectAll(".extent,.n>rect,.s>rect").attr("width", xExtent[1] - xExtent[0]);
   9185    }
   9186    function redrawY(g) {
   9187      g.select(".extent").attr("y", yExtent[0]);
   9188      g.selectAll(".extent,.e>rect,.w>rect").attr("height", yExtent[1] - yExtent[0]);
   9189    }
   9190    function brushstart() {
   9191      var target = this, eventTarget = d3.select(d3.event.target), event_ = event.of(target, arguments), g = d3.select(target), resizing = eventTarget.datum(), resizingX = !/^(n|s)$/.test(resizing) && x, resizingY = !/^(e|w)$/.test(resizing) && y, dragging = eventTarget.classed("extent"), dragRestore = d3_event_dragSuppress(target), center, origin = d3.mouse(target), offset;
   9192      var w = d3.select(d3_window(target)).on("keydown.brush", keydown).on("keyup.brush", keyup);
   9193      if (d3.event.changedTouches) {
   9194        w.on("touchmove.brush", brushmove).on("touchend.brush", brushend);
   9195      } else {
   9196        w.on("mousemove.brush", brushmove).on("mouseup.brush", brushend);
   9197      }
   9198      g.interrupt().selectAll("*").interrupt();
   9199      if (dragging) {
   9200        origin[0] = xExtent[0] - origin[0];
   9201        origin[1] = yExtent[0] - origin[1];
   9202      } else if (resizing) {
   9203        var ex = +/w$/.test(resizing), ey = +/^n/.test(resizing);
   9204        offset = [ xExtent[1 - ex] - origin[0], yExtent[1 - ey] - origin[1] ];
   9205        origin[0] = xExtent[ex];
   9206        origin[1] = yExtent[ey];
   9207      } else if (d3.event.altKey) center = origin.slice();
   9208      g.style("pointer-events", "none").selectAll(".resize").style("display", null);
   9209      d3.select("body").style("cursor", eventTarget.style("cursor"));
   9210      event_({
   9211        type: "brushstart"
   9212      });
   9213      brushmove();
   9214      function keydown() {
   9215        if (d3.event.keyCode == 32) {
   9216          if (!dragging) {
   9217            center = null;
   9218            origin[0] -= xExtent[1];
   9219            origin[1] -= yExtent[1];
   9220            dragging = 2;
   9221          }
   9222          d3_eventPreventDefault();
   9223        }
   9224      }
   9225      function keyup() {
   9226        if (d3.event.keyCode == 32 && dragging == 2) {
   9227          origin[0] += xExtent[1];
   9228          origin[1] += yExtent[1];
   9229          dragging = 0;
   9230          d3_eventPreventDefault();
   9231        }
   9232      }
   9233      function brushmove() {
   9234        var point = d3.mouse(target), moved = false;
   9235        if (offset) {
   9236          point[0] += offset[0];
   9237          point[1] += offset[1];
   9238        }
   9239        if (!dragging) {
   9240          if (d3.event.altKey) {
   9241            if (!center) center = [ (xExtent[0] + xExtent[1]) / 2, (yExtent[0] + yExtent[1]) / 2 ];
   9242            origin[0] = xExtent[+(point[0] < center[0])];
   9243            origin[1] = yExtent[+(point[1] < center[1])];
   9244          } else center = null;
   9245        }
   9246        if (resizingX && move1(point, x, 0)) {
   9247          redrawX(g);
   9248          moved = true;
   9249        }
   9250        if (resizingY && move1(point, y, 1)) {
   9251          redrawY(g);
   9252          moved = true;
   9253        }
   9254        if (moved) {
   9255          redraw(g);
   9256          event_({
   9257            type: "brush",
   9258            mode: dragging ? "move" : "resize"
   9259          });
   9260        }
   9261      }
   9262      function move1(point, scale, i) {
   9263        var range = d3_scaleRange(scale), r0 = range[0], r1 = range[1], position = origin[i], extent = i ? yExtent : xExtent, size = extent[1] - extent[0], min, max;
   9264        if (dragging) {
   9265          r0 -= position;
   9266          r1 -= size + position;
   9267        }
   9268        min = (i ? yClamp : xClamp) ? Math.max(r0, Math.min(r1, point[i])) : point[i];
   9269        if (dragging) {
   9270          max = (min += position) + size;
   9271        } else {
   9272          if (center) position = Math.max(r0, Math.min(r1, 2 * center[i] - min));
   9273          if (position < min) {
   9274            max = min;
   9275            min = position;
   9276          } else {
   9277            max = position;
   9278          }
   9279        }
   9280        if (extent[0] != min || extent[1] != max) {
   9281          if (i) yExtentDomain = null; else xExtentDomain = null;
   9282          extent[0] = min;
   9283          extent[1] = max;
   9284          return true;
   9285        }
   9286      }
   9287      function brushend() {
   9288        brushmove();
   9289        g.style("pointer-events", "all").selectAll(".resize").style("display", brush.empty() ? "none" : null);
   9290        d3.select("body").style("cursor", null);
   9291        w.on("mousemove.brush", null).on("mouseup.brush", null).on("touchmove.brush", null).on("touchend.brush", null).on("keydown.brush", null).on("keyup.brush", null);
   9292        dragRestore();
   9293        event_({
   9294          type: "brushend"
   9295        });
   9296      }
   9297    }
   9298    brush.x = function(z) {
   9299      if (!arguments.length) return x;
   9300      x = z;
   9301      resizes = d3_svg_brushResizes[!x << 1 | !y];
   9302      return brush;
   9303    };
   9304    brush.y = function(z) {
   9305      if (!arguments.length) return y;
   9306      y = z;
   9307      resizes = d3_svg_brushResizes[!x << 1 | !y];
   9308      return brush;
   9309    };
   9310    brush.clamp = function(z) {
   9311      if (!arguments.length) return x && y ? [ xClamp, yClamp ] : x ? xClamp : y ? yClamp : null;
   9312      if (x && y) xClamp = !!z[0], yClamp = !!z[1]; else if (x) xClamp = !!z; else if (y) yClamp = !!z;
   9313      return brush;
   9314    };
   9315    brush.extent = function(z) {
   9316      var x0, x1, y0, y1, t;
   9317      if (!arguments.length) {
   9318        if (x) {
   9319          if (xExtentDomain) {
   9320            x0 = xExtentDomain[0], x1 = xExtentDomain[1];
   9321          } else {
   9322            x0 = xExtent[0], x1 = xExtent[1];
   9323            if (x.invert) x0 = x.invert(x0), x1 = x.invert(x1);
   9324            if (x1 < x0) t = x0, x0 = x1, x1 = t;
   9325          }
   9326        }
   9327        if (y) {
   9328          if (yExtentDomain) {
   9329            y0 = yExtentDomain[0], y1 = yExtentDomain[1];
   9330          } else {
   9331            y0 = yExtent[0], y1 = yExtent[1];
   9332            if (y.invert) y0 = y.invert(y0), y1 = y.invert(y1);
   9333            if (y1 < y0) t = y0, y0 = y1, y1 = t;
   9334          }
   9335        }
   9336        return x && y ? [ [ x0, y0 ], [ x1, y1 ] ] : x ? [ x0, x1 ] : y && [ y0, y1 ];
   9337      }
   9338      if (x) {
   9339        x0 = z[0], x1 = z[1];
   9340        if (y) x0 = x0[0], x1 = x1[0];
   9341        xExtentDomain = [ x0, x1 ];
   9342        if (x.invert) x0 = x(x0), x1 = x(x1);
   9343        if (x1 < x0) t = x0, x0 = x1, x1 = t;
   9344        if (x0 != xExtent[0] || x1 != xExtent[1]) xExtent = [ x0, x1 ];
   9345      }
   9346      if (y) {
   9347        y0 = z[0], y1 = z[1];
   9348        if (x) y0 = y0[1], y1 = y1[1];
   9349        yExtentDomain = [ y0, y1 ];
   9350        if (y.invert) y0 = y(y0), y1 = y(y1);
   9351        if (y1 < y0) t = y0, y0 = y1, y1 = t;
   9352        if (y0 != yExtent[0] || y1 != yExtent[1]) yExtent = [ y0, y1 ];
   9353      }
   9354      return brush;
   9355    };
   9356    brush.clear = function() {
   9357      if (!brush.empty()) {
   9358        xExtent = [ 0, 0 ], yExtent = [ 0, 0 ];
   9359        xExtentDomain = yExtentDomain = null;
   9360      }
   9361      return brush;
   9362    };
   9363    brush.empty = function() {
   9364      return !!x && xExtent[0] == xExtent[1] || !!y && yExtent[0] == yExtent[1];
   9365    };
   9366    return d3.rebind(brush, event, "on");
   9367  };
   9368  var d3_svg_brushCursor = {
   9369    n: "ns-resize",
   9370    e: "ew-resize",
   9371    s: "ns-resize",
   9372    w: "ew-resize",
   9373    nw: "nwse-resize",
   9374    ne: "nesw-resize",
   9375    se: "nwse-resize",
   9376    sw: "nesw-resize"
   9377  };
   9378  var d3_svg_brushResizes = [ [ "n", "e", "s", "w", "nw", "ne", "se", "sw" ], [ "e", "w" ], [ "n", "s" ], [] ];
   9379  var d3_time_format = d3_time.format = d3_locale_enUS.timeFormat;
   9380  var d3_time_formatUtc = d3_time_format.utc;
   9381  var d3_time_formatIso = d3_time_formatUtc("%Y-%m-%dT%H:%M:%S.%LZ");
   9382  d3_time_format.iso = Date.prototype.toISOString && +new Date("2000-01-01T00:00:00.000Z") ? d3_time_formatIsoNative : d3_time_formatIso;
   9383  function d3_time_formatIsoNative(date) {
   9384    return date.toISOString();
   9385  }
   9386  d3_time_formatIsoNative.parse = function(string) {
   9387    var date = new Date(string);
   9388    return isNaN(date) ? null : date;
   9389  };
   9390  d3_time_formatIsoNative.toString = d3_time_formatIso.toString;
   9391  d3_time.second = d3_time_interval(function(date) {
   9392    return new d3_date(Math.floor(date / 1e3) * 1e3);
   9393  }, function(date, offset) {
   9394    date.setTime(date.getTime() + Math.floor(offset) * 1e3);
   9395  }, function(date) {
   9396    return date.getSeconds();
   9397  });
   9398  d3_time.seconds = d3_time.second.range;
   9399  d3_time.seconds.utc = d3_time.second.utc.range;
   9400  d3_time.minute = d3_time_interval(function(date) {
   9401    return new d3_date(Math.floor(date / 6e4) * 6e4);
   9402  }, function(date, offset) {
   9403    date.setTime(date.getTime() + Math.floor(offset) * 6e4);
   9404  }, function(date) {
   9405    return date.getMinutes();
   9406  });
   9407  d3_time.minutes = d3_time.minute.range;
   9408  d3_time.minutes.utc = d3_time.minute.utc.range;
   9409  d3_time.hour = d3_time_interval(function(date) {
   9410    var timezone = date.getTimezoneOffset() / 60;
   9411    return new d3_date((Math.floor(date / 36e5 - timezone) + timezone) * 36e5);
   9412  }, function(date, offset) {
   9413    date.setTime(date.getTime() + Math.floor(offset) * 36e5);
   9414  }, function(date) {
   9415    return date.getHours();
   9416  });
   9417  d3_time.hours = d3_time.hour.range;
   9418  d3_time.hours.utc = d3_time.hour.utc.range;
   9419  d3_time.month = d3_time_interval(function(date) {
   9420    date = d3_time.day(date);
   9421    date.setDate(1);
   9422    return date;
   9423  }, function(date, offset) {
   9424    date.setMonth(date.getMonth() + offset);
   9425  }, function(date) {
   9426    return date.getMonth();
   9427  });
   9428  d3_time.months = d3_time.month.range;
   9429  d3_time.months.utc = d3_time.month.utc.range;
   9430  function d3_time_scale(linear, methods, format) {
   9431    function scale(x) {
   9432      return linear(x);
   9433    }
   9434    scale.invert = function(x) {
   9435      return d3_time_scaleDate(linear.invert(x));
   9436    };
   9437    scale.domain = function(x) {
   9438      if (!arguments.length) return linear.domain().map(d3_time_scaleDate);
   9439      linear.domain(x);
   9440      return scale;
   9441    };
   9442    function tickMethod(extent, count) {
   9443      var span = extent[1] - extent[0], target = span / count, i = d3.bisect(d3_time_scaleSteps, target);
   9444      return i == d3_time_scaleSteps.length ? [ methods.year, d3_scale_linearTickRange(extent.map(function(d) {
   9445        return d / 31536e6;
   9446      }), count)[2] ] : !i ? [ d3_time_scaleMilliseconds, d3_scale_linearTickRange(extent, count)[2] ] : methods[target / d3_time_scaleSteps[i - 1] < d3_time_scaleSteps[i] / target ? i - 1 : i];
   9447    }
   9448    scale.nice = function(interval, skip) {
   9449      var domain = scale.domain(), extent = d3_scaleExtent(domain), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" && tickMethod(extent, interval);
   9450      if (method) interval = method[0], skip = method[1];
   9451      function skipped(date) {
   9452        return !isNaN(date) && !interval.range(date, d3_time_scaleDate(+date + 1), skip).length;
   9453      }
   9454      return scale.domain(d3_scale_nice(domain, skip > 1 ? {
   9455        floor: function(date) {
   9456          while (skipped(date = interval.floor(date))) date = d3_time_scaleDate(date - 1);
   9457          return date;
   9458        },
   9459        ceil: function(date) {
   9460          while (skipped(date = interval.ceil(date))) date = d3_time_scaleDate(+date + 1);
   9461          return date;
   9462        }
   9463      } : interval));
   9464    };
   9465    scale.ticks = function(interval, skip) {
   9466      var extent = d3_scaleExtent(scale.domain()), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" ? tickMethod(extent, interval) : !interval.range && [ {
   9467        range: interval
   9468      }, skip ];
   9469      if (method) interval = method[0], skip = method[1];
   9470      return interval.range(extent[0], d3_time_scaleDate(+extent[1] + 1), skip < 1 ? 1 : skip);
   9471    };
   9472    scale.tickFormat = function() {
   9473      return format;
   9474    };
   9475    scale.copy = function() {
   9476      return d3_time_scale(linear.copy(), methods, format);
   9477    };
   9478    return d3_scale_linearRebind(scale, linear);
   9479  }
   9480  function d3_time_scaleDate(t) {
   9481    return new Date(t);
   9482  }
   9483  var d3_time_scaleSteps = [ 1e3, 5e3, 15e3, 3e4, 6e4, 3e5, 9e5, 18e5, 36e5, 108e5, 216e5, 432e5, 864e5, 1728e5, 6048e5, 2592e6, 7776e6, 31536e6 ];
   9484  var d3_time_scaleLocalMethods = [ [ d3_time.second, 1 ], [ d3_time.second, 5 ], [ d3_time.second, 15 ], [ d3_time.second, 30 ], [ d3_time.minute, 1 ], [ d3_time.minute, 5 ], [ d3_time.minute, 15 ], [ d3_time.minute, 30 ], [ d3_time.hour, 1 ], [ d3_time.hour, 3 ], [ d3_time.hour, 6 ], [ d3_time.hour, 12 ], [ d3_time.day, 1 ], [ d3_time.day, 2 ], [ d3_time.week, 1 ], [ d3_time.month, 1 ], [ d3_time.month, 3 ], [ d3_time.year, 1 ] ];
   9485  var d3_time_scaleLocalFormat = d3_time_format.multi([ [ ".%L", function(d) {
   9486    return d.getMilliseconds();
   9487  } ], [ ":%S", function(d) {
   9488    return d.getSeconds();
   9489  } ], [ "%I:%M", function(d) {
   9490    return d.getMinutes();
   9491  } ], [ "%I %p", function(d) {
   9492    return d.getHours();
   9493  } ], [ "%a %d", function(d) {
   9494    return d.getDay() && d.getDate() != 1;
   9495  } ], [ "%b %d", function(d) {
   9496    return d.getDate() != 1;
   9497  } ], [ "%B", function(d) {
   9498    return d.getMonth();
   9499  } ], [ "%Y", d3_true ] ]);
   9500  var d3_time_scaleMilliseconds = {
   9501    range: function(start, stop, step) {
   9502      return d3.range(Math.ceil(start / step) * step, +stop, step).map(d3_time_scaleDate);
   9503    },
   9504    floor: d3_identity,
   9505    ceil: d3_identity
   9506  };
   9507  d3_time_scaleLocalMethods.year = d3_time.year;
   9508  d3_time.scale = function() {
   9509    return d3_time_scale(d3.scale.linear(), d3_time_scaleLocalMethods, d3_time_scaleLocalFormat);
   9510  };
   9511  var d3_time_scaleUtcMethods = d3_time_scaleLocalMethods.map(function(m) {
   9512    return [ m[0].utc, m[1] ];
   9513  });
   9514  var d3_time_scaleUtcFormat = d3_time_formatUtc.multi([ [ ".%L", function(d) {
   9515    return d.getUTCMilliseconds();
   9516  } ], [ ":%S", function(d) {
   9517    return d.getUTCSeconds();
   9518  } ], [ "%I:%M", function(d) {
   9519    return d.getUTCMinutes();
   9520  } ], [ "%I %p", function(d) {
   9521    return d.getUTCHours();
   9522  } ], [ "%a %d", function(d) {
   9523    return d.getUTCDay() && d.getUTCDate() != 1;
   9524  } ], [ "%b %d", function(d) {
   9525    return d.getUTCDate() != 1;
   9526  } ], [ "%B", function(d) {
   9527    return d.getUTCMonth();
   9528  } ], [ "%Y", d3_true ] ]);
   9529  d3_time_scaleUtcMethods.year = d3_time.year.utc;
   9530  d3_time.scale.utc = function() {
   9531    return d3_time_scale(d3.scale.linear(), d3_time_scaleUtcMethods, d3_time_scaleUtcFormat);
   9532  };
   9533  d3.text = d3_xhrType(function(request) {
   9534    return request.responseText;
   9535  });
   9536  d3.json = function(url, callback) {
   9537    return d3_xhr(url, "application/json", d3_json, callback);
   9538  };
   9539  function d3_json(request) {
   9540    return JSON.parse(request.responseText);
   9541  }
   9542  d3.html = function(url, callback) {
   9543    return d3_xhr(url, "text/html", d3_html, callback);
   9544  };
   9545  function d3_html(request) {
   9546    var range = d3_document.createRange();
   9547    range.selectNode(d3_document.body);
   9548    return range.createContextualFragment(request.responseText);
   9549  }
   9550  d3.xml = d3_xhrType(function(request) {
   9551    return request.responseXML;
   9552  });
   9553  if (typeof define === "function" && define.amd) this.d3 = d3, define(d3); else if (typeof module === "object" && module.exports) module.exports = d3; else this.d3 = d3;
   9554 }();
	tor-browser The Tor Browser
	git clone https://git.dasho.dev/tor-browser.git
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