From 6beb446925c967aca92f5513adf36c5db77c00d6 Mon Sep 17 00:00:00 2001
From: TATTAVARADA <statta@research.att.com>
Date: Thu, 27 Apr 2017 07:53:18 -0400
Subject: [PORTAL-7] Rebase

This rebasing includes common libraries and common overlays projects
abstraction of components

Change-Id: Ia1efa4deacdc5701e6205104ac021a6c80ed60ba
Signed-off-by: st782s <statta@research.att.com>
---
 .../main/webapp/static/fusion/raptor/d3/js/d3.js   | 3015 ++++++++++++++++++++
 1 file changed, 3015 insertions(+)
 create mode 100644 ecomp-sdk/epsdk-app-overlay/src/main/webapp/static/fusion/raptor/d3/js/d3.js

(limited to 'ecomp-sdk/epsdk-app-overlay/src/main/webapp/static/fusion/raptor/d3/js/d3.js')

diff --git a/ecomp-sdk/epsdk-app-overlay/src/main/webapp/static/fusion/raptor/d3/js/d3.js b/ecomp-sdk/epsdk-app-overlay/src/main/webapp/static/fusion/raptor/d3/js/d3.js
new file mode 100644
index 00000000..250d9767
--- /dev/null
+++ b/ecomp-sdk/epsdk-app-overlay/src/main/webapp/static/fusion/raptor/d3/js/d3.js
@@ -0,0 +1,3015 @@
+(function(){d3 = {version: "1.8.5"}; // semver
+if (!Date.now) Date.now = function() {
+  return +new Date();
+};
+if (!Object.create) Object.create = function(o) {
+  /** @constructor */ function f() {}
+  f.prototype = o;
+  return new f();
+};
+var d3_array = d3_arraySlice; // conversion for NodeLists
+
+function d3_arrayCopy(psuedoarray) {
+  var i = -1, n = psuedoarray.length, array = [];
+  while (++i < n) array.push(psuedoarray[i]);
+  return array;
+}
+
+function d3_arraySlice(psuedoarray) {
+  return Array.prototype.slice.call(psuedoarray);
+}
+
+try {
+  d3_array(document.documentElement.childNodes)[0].nodeType;
+} catch(e) {
+  d3_array = d3_arrayCopy;
+}
+function d3_functor(v) {
+  return typeof v == "function" ? v : function() { return v; };
+}
+// A getter-setter method that preserves the appropriate `this` context.
+d3.rebind = function(object, method) {
+  return function() {
+    var x = method.apply(object, arguments);
+    return arguments.length ? object : x;
+  };
+};
+d3.ascending = function(a, b) {
+  return a < b ? -1 : a > b ? 1 : 0;
+};
+d3.descending = function(a, b) {
+  return b < a ? -1 : b > a ? 1 : 0;
+};
+d3.min = function(array, f) {
+  var i = 0,
+      n = array.length,
+      a = array[0],
+      b;
+  if (arguments.length == 1) {
+    while (++i < n) if (a > (b = array[i])) a = b;
+  } else {
+    a = f(array[0]);
+    while (++i < n) if (a > (b = f(array[i]))) a = b;
+  }
+  return a;
+};
+d3.max = function(array, f) {
+  var i = 0,
+      n = array.length,
+      a = array[0],
+      b;
+  if (arguments.length == 1) {
+    while (++i < n) if (a < (b = array[i])) a = b;
+  } else {
+    a = f(a);
+    while (++i < n) if (a < (b = f(array[i]))) a = b;
+  }
+  return a;
+};
+d3.nest = function() {
+  var nest = {},
+      keys = [],
+      sortKeys = [],
+      sortValues,
+      rollup;
+
+  function map(array, depth) {
+    if (depth >= keys.length) return rollup
+        ? rollup.call(nest, array) : (sortValues
+        ? array.sort(sortValues)
+        : array);
+
+    var i = -1,
+        n = array.length,
+        key = keys[depth++],
+        keyValue,
+        object,
+        o = {};
+
+    while (++i < n) {
+      if ((keyValue = key(object = array[i])) in o) {
+        o[keyValue].push(object);
+      } else {
+        o[keyValue] = [object];
+      }
+    }
+
+    for (keyValue in o) {
+      o[keyValue] = map(o[keyValue], depth);
+    }
+
+    return o;
+  }
+
+  function entries(map, depth) {
+    if (depth >= keys.length) return map;
+
+    var a = [],
+        sortKey = sortKeys[depth++],
+        key;
+
+    for (key in map) {
+      a.push({key: key, values: entries(map[key], depth)});
+    }
+
+    if (sortKey) a.sort(function(a, b) {
+      return sortKey(a.key, b.key);
+    });
+
+    return a;
+  }
+
+  nest.map = function(array) {
+    return map(array, 0);
+  };
+
+  nest.entries = function(array) {
+    return entries(map(array, 0), 0);
+  };
+
+  nest.key = function(d) {
+    keys.push(d);
+    return nest;
+  };
+
+  // Specifies the order for the most-recently specified key.
+  // Note: only applies to entries. Map keys are unordered!
+  nest.sortKeys = function(order) {
+    sortKeys[keys.length - 1] = order;
+    return nest;
+  };
+
+  // Specifies the order for leaf values.
+  // Applies to both maps and entries array.
+  nest.sortValues = function(order) {
+    sortValues = order;
+    return nest;
+  };
+
+  nest.rollup = function(f) {
+    rollup = f;
+    return nest;
+  };
+
+  return nest;
+};
+d3.keys = function(map) {
+  var keys = [];
+  for (var key in map) keys.push(key);
+  return keys;
+};
+d3.values = function(map) {
+  var values = [];
+  for (var key in map) values.push(map[key]);
+  return values;
+};
+d3.entries = function(map) {
+  var entries = [];
+  for (var key in map) entries.push({key: key, value: map[key]});
+  return entries;
+};
+d3.merge = function(arrays) {
+  return Array.prototype.concat.apply([], arrays);
+};
+d3.split = function(array, f) {
+  var arrays = [],
+      values = [],
+      value,
+      i = -1,
+      n = array.length;
+  if (arguments.length < 2) f = d3_splitter;
+  while (++i < n) {
+    if (f.call(values, value = array[i], i)) {
+      values = [];
+    } else {
+      if (!values.length) arrays.push(values);
+      values.push(value);
+    }
+  }
+  return arrays;
+};
+
+function d3_splitter(d) {
+  return d == null;
+}
+function d3_collapse(s) {
+  return s.replace(/(^\s+)|(\s+$)/g, "").replace(/\s+/g, " ");
+}
+//
+// Note: assigning to the arguments array simultaneously changes the value of
+// the corresponding argument!
+//
+// TODO The `this` argument probably shouldn't be the first argument to the
+// callback, anyway, since it's redundant. However, that will require a major
+// version bump due to backwards compatibility, so I'm not changing it right
+// away.
+//
+function d3_call(callback) {
+  callback.apply(this, (arguments[0] = this, arguments));
+  return this;
+}
+/**
+ * @param {number} start
+ * @param {number=} stop
+ * @param {number=} step
+ */
+d3.range = function(start, stop, step) {
+  if (arguments.length == 1) { stop = start; start = 0; }
+  if (step == null) step = 1;
+  if ((stop - start) / step == Infinity) throw new Error("infinite range");
+  var range = [],
+       i = -1,
+       j;
+  if (step < 0) while ((j = start + step * ++i) > stop) range.push(j);
+  else while ((j = start + step * ++i) < stop) range.push(j);
+  return range;
+};
+d3.requote = function(s) {
+  return s.replace(d3_requote_re, "\\$&");
+};
+
+var d3_requote_re = /[\\\^\$\*\+\?\[\]\(\)\.\{\}]/g;
+d3.xhr = function(url, mime, callback) {
+  var req = new XMLHttpRequest();
+  if (arguments.length < 3) callback = mime;
+  else if (mime && req.overrideMimeType) req.overrideMimeType(mime);
+  req.open("GET", url, true);
+  req.onreadystatechange = function() {
+    if (req.readyState == 4) callback(req.status < 300 ? req : null);
+  };
+  req.send(null);
+};
+d3.text = function(url, mime, callback) {
+  function ready(req) {
+    callback(req && req.responseText);
+  }
+  if (arguments.length < 3) {
+    callback = mime;
+    mime = null;
+  }
+  d3.xhr(url, mime, ready);
+};
+d3.json = function(url, callback) {
+  d3.text(url, "application/json", function(text) {
+    callback(text ? JSON.parse(text) : null);
+  });
+};
+d3.html = function(url, callback) {
+  d3.text(url, "text/html", function(text) {
+    if (text != null) { // Treat empty string as valid HTML.
+      var range = document.createRange();
+      range.selectNode(document.body);
+      text = range.createContextualFragment(text);
+    }
+    callback(text);
+  });
+};
+d3.xml = function(url, mime, callback) {
+  function ready(req) {
+    callback(req && req.responseXML);
+  }
+  if (arguments.length < 3) {
+    callback = mime;
+    mime = null;
+  }
+  d3.xhr(url, mime, ready);
+};
+d3.ns = {
+
+  prefix: {
+    svg: "http://www.w3.org/2000/svg",
+    xhtml: "http://www.w3.org/1999/xhtml",
+    xlink: "http://www.w3.org/1999/xlink",
+    xml: "http://www.w3.org/XML/1998/namespace",
+    xmlns: "http://www.w3.org/2000/xmlns/"
+  },
+
+  qualify: function(name) {
+    var i = name.indexOf(":");
+    return i < 0 ? name : {
+      space: d3.ns.prefix[name.substring(0, i)],
+      local: name.substring(i + 1)
+    };
+  }
+
+};
+/** @param {...string} types */
+d3.dispatch = function(types) {
+  var dispatch = {},
+      type;
+  for (var i = 0, n = arguments.length; i < n; i++) {
+    type = arguments[i];
+    dispatch[type] = d3_dispatch(type);
+  }
+  return dispatch;
+};
+
+function d3_dispatch(type) {
+  var dispatch = {},
+      listeners = [];
+
+  dispatch.add = function(listener) {
+    for (var i = 0; i < listeners.length; i++) {
+      if (listeners[i].listener == listener) return dispatch; // already registered
+    }
+    listeners.push({listener: listener, on: true});
+    return dispatch;
+  };
+
+  dispatch.remove = function(listener) {
+    for (var i = 0; i < listeners.length; i++) {
+      var l = listeners[i];
+      if (l.listener == listener) {
+        l.on = false;
+        listeners = listeners.slice(0, i).concat(listeners.slice(i + 1));
+        break;
+      }
+    }
+    return dispatch;
+  };
+
+  dispatch.dispatch = function() {
+    var ls = listeners; // defensive reference
+    for (var i = 0, n = ls.length; i < n; i++) {
+      var l = ls[i];
+      if (l.on) l.listener.apply(this, arguments);
+    }
+  };
+
+  return dispatch;
+};
+// TODO align, type
+d3.format = function(specifier) {
+  var match = d3_format_re.exec(specifier),
+      fill = match[1] || " ",
+      sign = match[3] || "",
+      zfill = match[5],
+      width = +match[6],
+      comma = match[7],
+      precision = match[8],
+      type = match[9];
+  if (precision) precision = precision.substring(1);
+  if (zfill) {
+    fill = "0"; // TODO align = "=";
+    if (comma) width -= Math.floor((width - 1) / 4);
+  }
+  if (type == "d") precision = "0";
+  return function(value) {
+    var number = +value,
+        negative = (number < 0) && (number = -number) ? "\u2212" : sign;
+
+    // Return the empty string for floats formatted as ints.
+    if ((type == "d") && (number % 1)) return "";
+
+    // Convert the input value to the desired precision.
+    if (precision) value = number.toFixed(precision);
+    else value = "" + number;
+
+    // If the fill character is 0, the sign and group is applied after the fill.
+    if (zfill) {
+      var length = value.length + negative.length;
+      if (length < width) value = new Array(width - length + 1).join(fill) + value;
+      if (comma) value = d3_format_group(value);
+      value = negative + value;
+    }
+
+    // Otherwise (e.g., space-filling), the sign and group is applied before.
+    else {
+      if (comma) value = d3_format_group(value);
+      value = negative + value;
+      var length = value.length;
+      if (length < width) value = new Array(width - length + 1).join(fill) + value;
+    }
+
+    return value;
+  };
+};
+
+// [[fill]align][sign][#][0][width][,][.precision][type]
+var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?(#)?(0)?([0-9]+)?(,)?(\.[0-9]+)?([a-zA-Z%])?/;
+
+// Apply comma grouping for thousands.
+function d3_format_group(value) {
+  var i = value.lastIndexOf("."),
+      f = i >= 0 ? value.substring(i) : (i = value.length, ""),
+      t = [];
+  while (i > 0) t.push(value.substring(i -= 3, i + 3));
+  return t.reverse().join(",") + f;
+}
+/*
+ * TERMS OF USE - EASING EQUATIONS
+ *
+ * Open source under the BSD License.
+ *
+ * Copyright 2001 Robert Penner
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ *
+ * - Neither the name of the author nor the names of contributors may be used to
+ *   endorse or promote products derived from this software without specific
+ *   prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+var d3_ease_quad = d3_ease_poly(2),
+    d3_ease_cubic = d3_ease_poly(3);
+
+var d3_ease = {
+  linear: function() { return d3_ease_linear; },
+  poly: d3_ease_poly,
+  quad: function() { return d3_ease_quad; },
+  cubic: function() { return d3_ease_cubic; },
+  sin: function() { return d3_ease_sin; },
+  exp: function() { return d3_ease_exp; },
+  circle: function() { return d3_ease_circle; },
+  elastic: d3_ease_elastic,
+  back: d3_ease_back,
+  bounce: function() { return d3_ease_bounce; }
+};
+
+var d3_ease_mode = {
+  "in": function(f) { return f; },
+  "out": d3_ease_reverse,
+  "in-out": d3_ease_reflect,
+  "out-in": function(f) { return d3_ease_reflect(d3_ease_reverse(f)); }
+};
+
+d3.ease = function(name) {
+  var i = name.indexOf("-"),
+      t = i >= 0 ? name.substring(0, i) : name,
+      m = i >= 0 ? name.substring(i + 1) : "in";
+  return d3_ease_mode[m](d3_ease[t].apply(null, Array.prototype.slice.call(arguments, 1)));
+};
+
+function d3_ease_reverse(f) {
+  return function(t) {
+    return 1 - f(1 - t);
+  };
+}
+
+function d3_ease_reflect(f) {
+  return function(t) {
+    return .5 * (t < .5 ? f(2 * t) : (2 - f(2 - 2 * t)));
+  };
+}
+
+function d3_ease_linear(t) {
+  return t;
+}
+
+function d3_ease_poly(e) {
+  return function(t) {
+    return Math.pow(t, e);
+  }
+}
+
+function d3_ease_sin(t) {
+  return 1 - Math.cos(t * Math.PI / 2);
+}
+
+function d3_ease_exp(t) {
+  return t ? Math.pow(2, 10 * (t - 1)) - 1e-3 : 0;
+}
+
+function d3_ease_circle(t) {
+  return 1 - Math.sqrt(1 - t * t);
+}
+
+function d3_ease_elastic(a, p) {
+  var s;
+  if (arguments.length < 2) p = 0.45;
+  if (arguments.length < 1) { a = 1; s = p / 4; }
+  else s = p / (2 * Math.PI) * Math.asin(1 / a);
+  return function(t) {
+    return 1 + a * Math.pow(2, 10 * -t) * Math.sin((t - s) * 2 * Math.PI / p);
+  };
+}
+
+function d3_ease_back(s) {
+  if (!s) s = 1.70158;
+  return function(t) {
+    return t * t * ((s + 1) * t - s);
+  };
+}
+
+function d3_ease_bounce(t) {
+  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;
+}
+d3.event = null;
+d3.interpolate = function(a, b) {
+  if (typeof b == "number") return d3.interpolateNumber(+a, b);
+  if (typeof b == "string") {
+    return (b in d3_rgb_names) || /^(#|rgb\(|hsl\()/.test(b)
+        ? d3.interpolateRgb(String(a), b)
+        : d3.interpolateString(String(a), b);
+  }
+  if (b instanceof Array) return d3.interpolateArray(a, b);
+  return d3.interpolateObject(a, b);
+};
+
+d3.interpolateNumber = function(a, b) {
+  b -= a;
+  return function(t) { return a + b * t; };
+};
+
+d3.interpolateRound = function(a, b) {
+  b -= a;
+  return function(t) { return Math.round(a + b * t); };
+};
+
+d3.interpolateString = function(a, b) {
+  var m, // current match
+      i, // current index
+      j, // current index (for coallescing)
+      s0 = 0, // start index of current string prefix
+      s1 = 0, // end index of current string prefix
+      s = [], // string constants and placeholders
+      q = [], // number interpolators
+      n, // q.length
+      o;
+
+  // Find all numbers in b.
+  for (i = 0; m = d3_interpolate_number.exec(b); ++i) {
+    if (m.index) s.push(b.substring(s0, s1 = m.index));
+    q.push({i: s.length, x: m[0]});
+    s.push(null);
+    s0 = d3_interpolate_number.lastIndex;
+  }
+  if (s0 < b.length) s.push(b.substring(s0));
+
+  // Find all numbers in a.
+  for (i = 0, n = q.length; (m = d3_interpolate_number.exec(a)) && i < n; ++i) {
+    o = q[i];
+    if (o.x == m[0]) { // The numbers match, so coallesce.
+      if (o.i) {
+        if (s[o.i + 1] == null) { // This match is followed by another number.
+          s[o.i - 1] += o.x;
+          s.splice(o.i, 1);
+          for (j = i + 1; j < n; ++j) q[j].i--;
+        } else { // This match is followed by a string, so coallesce twice.
+          s[o.i - 1] += o.x + s[o.i + 1];
+          s.splice(o.i, 2);
+          for (j = i + 1; j < n; ++j) q[j].i -= 2;
+        }
+      } else {
+          if (s[o.i + 1] == null) { // This match is followed by another number.
+          s[o.i] = o.x;
+        } else { // This match is followed by a string, so coallesce twice.
+          s[o.i] = o.x + s[o.i + 1];
+          s.splice(o.i + 1, 1);
+          for (j = i + 1; j < n; ++j) q[j].i--;
+        }
+      }
+      q.splice(i, 1);
+      n--;
+      i--;
+    } else {
+      o.x = d3.interpolateNumber(parseFloat(m[0]), parseFloat(o.x));
+    }
+  }
+
+  // Remove any numbers in b not found in a.
+  while (i < n) {
+    o = q.pop();
+    if (s[o.i + 1] == null) { // This match is followed by another number.
+      s[o.i] = o.x;
+    } else { // This match is followed by a string, so coallesce twice.
+      s[o.i] = o.x + s[o.i + 1];
+      s.splice(o.i + 1, 1);
+    }
+    n--;
+  }
+
+  // Special optimization for only a single match.
+  if (s.length == 1) {
+    return s[0] == null ? q[0].x : function() { return b; };
+  }
+
+  // Otherwise, interpolate each of the numbers and rejoin the string.
+  return function(t) {
+    for (i = 0; i < n; ++i) s[(o = q[i]).i] = o.x(t);
+    return s.join("");
+  };
+};
+
+d3.interpolateRgb = function(a, b) {
+  a = d3.rgb(a);
+  b = d3.rgb(b);
+  var ar = a.r,
+      ag = a.g,
+      ab = a.b,
+      br = b.r - ar,
+      bg = b.g - ag,
+      bb = b.b - ab;
+  return function(t) {
+    return "rgb(" + Math.round(ar + br * t)
+        + "," + Math.round(ag + bg * t)
+        + "," + Math.round(ab + bb * t)
+        + ")";
+  };
+};
+
+// interpolates HSL space, but outputs RGB string (for compatibility)
+d3.interpolateHsl = function(a, b) {
+  a = d3.hsl(a);
+  b = d3.hsl(b);
+  var h0 = a.h,
+      s0 = a.s,
+      l0 = a.l,
+      h1 = b.h - h0,
+      s1 = b.s - s0,
+      l1 = b.l - l0;
+  return function(t) {
+    return d3_hsl_rgb(h0 + h1 * t, s0 + s1 * t, l0 + l1 * t).toString();
+  };
+};
+
+d3.interpolateArray = function(a, b) {
+  var x = [],
+      c = [],
+      na = a.length,
+      nb = b.length,
+      n0 = Math.min(a.length, b.length),
+      i;
+  for (i = 0; i < n0; ++i) x.push(d3.interpolate(a[i], b[i]));
+  for (; i < na; ++i) c[i] = a[i];
+  for (; i < nb; ++i) c[i] = b[i];
+  return function(t) {
+    for (i = 0; i < n0; ++i) c[i] = x[i](t);
+    return c;
+  };
+};
+
+d3.interpolateObject = function(a, b) {
+  var i = {},
+      c = {},
+      k;
+  for (k in a) {
+    if (k in b) {
+      i[k] = d3_interpolateByName(k)(a[k], b[k]);
+    } else {
+      c[k] = a[k];
+    }
+  }
+  for (k in b) {
+    if (!(k in a)) {
+      c[k] = b[k];
+    }
+  }
+  return function(t) {
+    for (k in i) c[k] = i[k](t);
+    return c;
+  };
+}
+
+var d3_interpolate_number = /[-+]?(?:\d+\.\d+|\d+\.|\.\d+|\d+)(?:[eE][-]?\d+)?/g,
+    d3_interpolate_digits = /[-+]?\d*\.?\d*(?:[eE][-]?\d+)?(.*)/,
+    d3_interpolate_rgb = {background: 1, fill: 1, stroke: 1};
+
+function d3_interpolateByName(n) {
+  return n in d3_interpolate_rgb || /\bcolor\b/.test(n)
+      ? d3.interpolateRgb
+      : d3.interpolate;
+}
+/**
+ * @param {number=} g
+ * @param {number=} b
+ */
+d3.rgb = function(r, g, b) {
+  return arguments.length == 1
+      ? d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb)
+      : d3_rgb(~~r, ~~g, ~~b);
+};
+
+function d3_rgb(r, g, b) {
+  return {r: r, g: g, b: b, toString: d3_rgb_format};
+}
+
+/** @this d3_rgb */
+function d3_rgb_format() {
+  return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
+}
+
+function d3_rgb_hex(v) {
+  return v < 0x10 ? "0" + v.toString(16) : v.toString(16);
+}
+
+function d3_rgb_parse(format, rgb, hsl) {
+  var r = 0, // red channel; int in [0, 255]
+      g = 0, // green channel; int in [0, 255]
+      b = 0, // blue channel; int in [0, 255]
+      m1, // CSS color specification match
+      m2, // CSS color specification type (e.g., rgb)
+      name;
+
+  /* Handle hsl, rgb. */
+  m1 = /([a-z]+)\((.*)\)/i.exec(format);
+  if (m1) {
+    m2 = m1[2].split(",");
+    switch (m1[1]) {
+      case "hsl": {
+        return hsl(
+          parseFloat(m2[0]), // degrees
+          parseFloat(m2[1]) / 100, // percentage
+          parseFloat(m2[2]) / 100 // percentage
+        );
+      }
+      case "rgb": {
+        return rgb(
+          d3_rgb_parseNumber(m2[0]),
+          d3_rgb_parseNumber(m2[1]),
+          d3_rgb_parseNumber(m2[2])
+        );
+      }
+    }
+  }
+
+  /* Named colors. */
+  if (name = d3_rgb_names[format]) return rgb(name.r, name.g, name.b);
+
+  /* Hexadecimal colors: #rgb and #rrggbb. */
+  if (format != null && format.charAt(0) == "#") {
+    if (format.length == 4) {
+      r = format.charAt(1); r += r;
+      g = format.charAt(2); g += g;
+      b = format.charAt(3); b += b;
+    } else if (format.length == 7) {
+      r = format.substring(1, 3);
+      g = format.substring(3, 5);
+      b = format.substring(5, 7);
+    }
+    r = parseInt(r, 16);
+    g = parseInt(g, 16);
+    b = parseInt(b, 16);
+  }
+
+  return rgb(r, g, b);
+}
+
+function d3_rgb_hsl(r, g, b) {
+  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;
+  if (d) {
+    s = l < .5 ? d / (max + min) : d / (2 - max - min);
+    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;
+    h *= 60;
+  } else {
+    s = h = 0;
+  }
+  return d3_hsl(h, s, l);
+}
+
+function d3_rgb_parseNumber(c) { // either integer or percentage
+  var f = parseFloat(c);
+  return c.charAt(c.length - 1) == "%" ? Math.round(f * 2.55) : f;
+}
+
+var d3_rgb_names = {
+  aliceblue: "#f0f8ff",
+  antiquewhite: "#faebd7",
+  aqua: "#00ffff",
+  aquamarine: "#7fffd4",
+  azure: "#f0ffff",
+  beige: "#f5f5dc",
+  bisque: "#ffe4c4",
+  black: "#000000",
+  blanchedalmond: "#ffebcd",
+  blue: "#0000ff",
+  blueviolet: "#8a2be2",
+  brown: "#a52a2a",
+  burlywood: "#deb887",
+  cadetblue: "#5f9ea0",
+  chartreuse: "#7fff00",
+  chocolate: "#d2691e",
+  coral: "#ff7f50",
+  cornflowerblue: "#6495ed",
+  cornsilk: "#fff8dc",
+  crimson: "#dc143c",
+  cyan: "#00ffff",
+  darkblue: "#00008b",
+  darkcyan: "#008b8b",
+  darkgoldenrod: "#b8860b",
+  darkgray: "#a9a9a9",
+  darkgreen: "#006400",
+  darkgrey: "#a9a9a9",
+  darkkhaki: "#bdb76b",
+  darkmagenta: "#8b008b",
+  darkolivegreen: "#556b2f",
+  darkorange: "#ff8c00",
+  darkorchid: "#9932cc",
+  darkred: "#8b0000",
+  darksalmon: "#e9967a",
+  darkseagreen: "#8fbc8f",
+  darkslateblue: "#483d8b",
+  darkslategray: "#2f4f4f",
+  darkslategrey: "#2f4f4f",
+  darkturquoise: "#00ced1",
+  darkviolet: "#9400d3",
+  deeppink: "#ff1493",
+  deepskyblue: "#00bfff",
+  dimgray: "#696969",
+  dimgrey: "#696969",
+  dodgerblue: "#1e90ff",
+  firebrick: "#b22222",
+  floralwhite: "#fffaf0",
+  forestgreen: "#228b22",
+  fuchsia: "#ff00ff",
+  gainsboro: "#dcdcdc",
+  ghostwhite: "#f8f8ff",
+  gold: "#ffd700",
+  goldenrod: "#daa520",
+  gray: "#808080",
+  green: "#008000",
+  greenyellow: "#adff2f",
+  grey: "#808080",
+  honeydew: "#f0fff0",
+  hotpink: "#ff69b4",
+  indianred: "#cd5c5c",
+  indigo: "#4b0082",
+  ivory: "#fffff0",
+  khaki: "#f0e68c",
+  lavender: "#e6e6fa",
+  lavenderblush: "#fff0f5",
+  lawngreen: "#7cfc00",
+  lemonchiffon: "#fffacd",
+  lightblue: "#add8e6",
+  lightcoral: "#f08080",
+  lightcyan: "#e0ffff",
+  lightgoldenrodyellow: "#fafad2",
+  lightgray: "#d3d3d3",
+  lightgreen: "#90ee90",
+  lightgrey: "#d3d3d3",
+  lightpink: "#ffb6c1",
+  lightsalmon: "#ffa07a",
+  lightseagreen: "#20b2aa",
+  lightskyblue: "#87cefa",
+  lightslategray: "#778899",
+  lightslategrey: "#778899",
+  lightsteelblue: "#b0c4de",
+  lightyellow: "#ffffe0",
+  lime: "#00ff00",
+  limegreen: "#32cd32",
+  linen: "#faf0e6",
+  magenta: "#ff00ff",
+  maroon: "#800000",
+  mediumaquamarine: "#66cdaa",
+  mediumblue: "#0000cd",
+  mediumorchid: "#ba55d3",
+  mediumpurple: "#9370db",
+  mediumseagreen: "#3cb371",
+  mediumslateblue: "#7b68ee",
+  mediumspringgreen: "#00fa9a",
+  mediumturquoise: "#48d1cc",
+  mediumvioletred: "#c71585",
+  midnightblue: "#191970",
+  mintcream: "#f5fffa",
+  mistyrose: "#ffe4e1",
+  moccasin: "#ffe4b5",
+  navajowhite: "#ffdead",
+  navy: "#000080",
+  oldlace: "#fdf5e6",
+  olive: "#808000",
+  olivedrab: "#6b8e23",
+  orange: "#ffa500",
+  orangered: "#ff4500",
+  orchid: "#da70d6",
+  palegoldenrod: "#eee8aa",
+  palegreen: "#98fb98",
+  paleturquoise: "#afeeee",
+  palevioletred: "#db7093",
+  papayawhip: "#ffefd5",
+  peachpuff: "#ffdab9",
+  peru: "#cd853f",
+  pink: "#ffc0cb",
+  plum: "#dda0dd",
+  powderblue: "#b0e0e6",
+  purple: "#800080",
+  red: "#ff0000",
+  rosybrown: "#bc8f8f",
+  royalblue: "#4169e1",
+  saddlebrown: "#8b4513",
+  salmon: "#fa8072",
+  sandybrown: "#f4a460",
+  seagreen: "#2e8b57",
+  seashell: "#fff5ee",
+  sienna: "#a0522d",
+  silver: "#c0c0c0",
+  skyblue: "#87ceeb",
+  slateblue: "#6a5acd",
+  slategray: "#708090",
+  slategrey: "#708090",
+  snow: "#fffafa",
+  springgreen: "#00ff7f",
+  steelblue: "#4682b4",
+  tan: "#d2b48c",
+  teal: "#008080",
+  thistle: "#d8bfd8",
+  tomato: "#ff6347",
+  turquoise: "#40e0d0",
+  violet: "#ee82ee",
+  wheat: "#f5deb3",
+  white: "#ffffff",
+  whitesmoke: "#f5f5f5",
+  yellow: "#ffff00",
+  yellowgreen: "#9acd32"
+};
+
+for (var d3_rgb_name in d3_rgb_names) {
+  d3_rgb_names[d3_rgb_name] = d3_rgb_parse(
+      d3_rgb_names[d3_rgb_name],
+      d3_rgb,
+      d3_hsl_rgb);
+}
+/**
+ * @param {number=} s
+ * @param {number=} l
+ */
+d3.hsl = function(h, s, l) {
+  return arguments.length == 1
+      ? d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl)
+      : d3_hsl(+h, +s, +l);
+};
+
+function d3_hsl(h, s, l) {
+  return {h: h, s: s, l: l, toString: d3_hsl_format};
+}
+
+/** @this d3_hsl */
+function d3_hsl_format() {
+  return "hsl(" + this.h + "," + this.s * 100 + "%," + this.l * 100 + "%)";
+}
+
+function d3_hsl_rgb(h, s, l) {
+  var m1,
+      m2;
+
+  /* Some simple corrections for h, s and l. */
+  h = h % 360; if (h < 0) h += 360;
+  s = s < 0 ? 0 : s > 1 ? 1 : s;
+  l = l < 0 ? 0 : l > 1 ? 1 : l;
+
+  /* From FvD 13.37, CSS Color Module Level 3 */
+  m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
+  m1 = 2 * l - m2;
+
+  function v(h) {
+    if (h > 360) h -= 360;
+    else if (h < 0) h += 360;
+    if (h < 60) return m1 + (m2 - m1) * h / 60;
+    if (h < 180) return m2;
+    if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
+    return m1;
+  }
+
+  function vv(h) {
+    return Math.round(v(h) * 255);
+  }
+
+  return d3_rgb(vv(h + 120), vv(h), vv(h - 120));
+}
+var d3_select = function(s, n) { return n.querySelector(s); },
+    d3_selectAll = function(s, n) { return d3_array(n.querySelectorAll(s)); };
+
+// Use Sizzle, if available.
+if (typeof Sizzle == "function") {
+  d3_select = function(s, n) { return Sizzle(s, n)[0]; };
+  d3_selectAll = function(s, n) { return Sizzle.uniqueSort(Sizzle(s, n)); };
+}
+
+var d3_root = d3_selection([[document]]);
+d3_root[0].parentNode = document.documentElement;
+
+// TODO fast singleton implementation!
+d3.select = function(selector) {
+  return typeof selector == "string"
+      ? d3_root.select(selector)
+      : d3_selection([[selector]]); // assume node
+};
+
+d3.selectAll = function(selector) {
+  return typeof selector == "string"
+      ? d3_root.selectAll(selector)
+      : d3_selection([d3_array(selector)]); // assume node[]
+};
+
+function d3_selection(groups) {
+
+  function select(select) {
+    var subgroups = [],
+        subgroup,
+        subnode,
+        group,
+        node;
+    for (var j = 0, m = groups.length; j < m; j++) {
+      group = groups[j];
+      subgroups.push(subgroup = []);
+      subgroup.parentNode = group.parentNode;
+      subgroup.parentData = group.parentData;
+      for (var i = 0, n = group.length; i < n; i++) {
+        if (node = group[i]) {
+          subgroup.push(subnode = select(node));
+          if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
+        } else {
+          subgroup.push(null);
+        }
+      }
+    }
+    return d3_selection(subgroups);
+  }
+
+  function selectAll(selectAll) {
+    var subgroups = [],
+        subgroup,
+        group,
+        node;
+    for (var j = 0, m = groups.length; j < m; j++) {
+      group = groups[j];
+      for (var i = 0, n = group.length; i < n; i++) {
+        if (node = group[i]) {
+          subgroups.push(subgroup = selectAll(node));
+          subgroup.parentNode = node;
+          subgroup.parentData = node.__data__;
+        }
+      }
+    }
+    return d3_selection(subgroups);
+  }
+
+  // TODO select(function)?
+  groups.select = function(selector) {
+    return select(function(node) {
+      return d3_select(selector, node);
+    });
+  };
+
+  // TODO selectAll(function)?
+  groups.selectAll = function(selector) {
+    return selectAll(function(node) {
+      return d3_selectAll(selector, node);
+    });
+  };
+
+  // TODO preserve null elements to maintain index?
+  groups.filter = function(filter) {
+    var subgroups = [],
+        subgroup,
+        group,
+        node;
+    for (var j = 0, m = groups.length; j < m; j++) {
+      group = groups[j];
+      subgroups.push(subgroup = []);
+      subgroup.parentNode = group.parentNode;
+      subgroup.parentData = group.parentData;
+      for (var i = 0, n = group.length; i < n; i++) {
+        if ((node = group[i]) && filter.call(node, node.__data__, i)) {
+          subgroup.push(node);
+        }
+      }
+    }
+    return d3_selection(subgroups);
+  };
+
+  groups.map = function(map) {
+    var group,
+        node;
+    for (var j = 0, m = groups.length; j < m; j++) {
+      group = groups[j];
+      for (var i = 0, n = group.length; i < n; i++) {
+        if (node = group[i]) node.__data__ = map.call(node, node.__data__, i);
+      }
+    }
+    return groups;
+  };
+
+  // TODO data(null) for clearing data?
+  groups.data = function(data, join) {
+    var enter = [],
+        update = [],
+        exit = [];
+
+    function bind(group, groupData) {
+      var i = 0,
+          n = group.length,
+          m = groupData.length,
+          n0 = Math.min(n, m),
+          n1 = Math.max(n, m),
+          updateNodes = [],
+          enterNodes = [],
+          exitNodes = [],
+          node,
+          nodeData;
+
+      function enterNode(data) {
+        return {__data__: data};
+      }
+
+      if (join) {
+        var nodeByKey = {},
+            exitData = [],
+            keys = [],
+            key,
+            j = groupData.length;
+
+        for (i = 0; i < n; i++) {
+          key = join.call(node = group[i], node.__data__, i);
+          if (key in nodeByKey) {
+            exitNodes[j++] = group[i];
+          } else {
+            nodeByKey[key] = node;
+            keys.push(key);
+          }
+        }
+
+        for (i = 0; i < m; i++) {
+          node = nodeByKey[key = join.call(groupData, nodeData = groupData[i], i)];
+          if (node) {
+            node.__data__ = nodeData;
+            updateNodes[i] = node;
+            enterNodes[i] = exitNodes[i] = null;
+          } else {
+            enterNodes[i] = enterNode(nodeData),
+            updateNodes[i] = exitNodes[i] = null;
+          }
+          delete nodeByKey[key];
+        }
+
+        for (i = 0; i < n; i++) {
+          if (keys[i] in nodeByKey) {
+            exitNodes[i] = group[i];
+          }
+        }
+      } else {
+        for (; i < n0; i++) {
+          node = group[i];
+          nodeData = groupData[i];
+          if (node) {
+            node.__data__ = nodeData;
+            updateNodes[i] = node;
+            enterNodes[i] = exitNodes[i] = null;
+          } else {
+            enterNodes[i] = enterNode(nodeData);
+            updateNodes[i] = exitNodes[i] = null;
+          }
+        }
+        for (; i < m; i++) {
+          enterNodes[i] = enterNode(groupData[i]);
+          updateNodes[i] = exitNodes[i] = null;
+        }
+        for (; i < n1; i++) {
+          exitNodes[i] = group[i];
+          enterNodes[i] = updateNodes[i] = null;
+        }
+      }
+
+      enterNodes.parentNode
+          = updateNodes.parentNode
+          = exitNodes.parentNode
+          = group.parentNode;
+
+      enterNodes.parentData
+          = updateNodes.parentData
+          = exitNodes.parentData
+          = group.parentData;
+
+      enter.push(enterNodes);
+      update.push(updateNodes);
+      exit.push(exitNodes);
+    }
+
+    var i = -1,
+        n = groups.length,
+        group;
+    if (typeof data == "function") {
+      while (++i < n) {
+        bind(group = groups[i], data.call(group, group.parentData, i));
+      }
+    } else {
+      while (++i < n) {
+        bind(group = groups[i], data);
+      }
+    }
+
+    var selection = d3_selection(update);
+    selection.enter = function() {
+      return d3_selectionEnter(enter);
+    };
+    selection.exit = function() {
+      return d3_selection(exit);
+    };
+    return selection;
+  };
+
+  // TODO mask forEach? or rename for eachData?
+  // TODO offer the same semantics for map, reduce, etc.?
+  groups.each = function(callback) {
+    for (var j = 0, m = groups.length; j < m; j++) {
+      var group = groups[j];
+      for (var i = 0, n = group.length; i < n; i++) {
+        var node = group[i];
+        if (node) callback.call(node, node.__data__, i);
+      }
+    }
+    return groups;
+  };
+
+  function first(callback) {
+    for (var j = 0, m = groups.length; j < m; j++) {
+      var group = groups[j];
+      for (var i = 0, n = group.length; i < n; i++) {
+        var node = group[i];
+        if (node) return callback.call(node, node.__data__, i);
+      }
+    }
+    return null;
+  }
+
+  groups.empty = function() {
+    return !first(function() { return true; });
+  };
+
+  groups.node = function() {
+    return first(function() { return this; });
+  };
+
+  groups.attr = function(name, value) {
+    name = d3.ns.qualify(name);
+
+    // If no value is specified, return the first value.
+    if (arguments.length < 2) {
+      return first(name.local
+          ? function() { return this.getAttributeNS(name.space, name.local); }
+          : function() { return this.getAttribute(name); });
+    }
+
+    /** @this {Element} */
+    function attrNull() {
+      this.removeAttribute(name);
+    }
+
+    /** @this {Element} */
+    function attrNullNS() {
+      this.removeAttributeNS(name.space, name.local);
+    }
+
+    /** @this {Element} */
+    function attrConstant() {
+      this.setAttribute(name, value);
+    }
+
+    /** @this {Element} */
+    function attrConstantNS() {
+      this.setAttributeNS(name.space, name.local, value);
+    }
+
+    /** @this {Element} */
+    function attrFunction() {
+      var x = value.apply(this, arguments);
+      if (x == null) this.removeAttribute(name);
+      else this.setAttribute(name, x);
+    }
+
+    /** @this {Element} */
+    function attrFunctionNS() {
+      var x = value.apply(this, arguments);
+      if (x == null) this.removeAttributeNS(name.space, name.local);
+      else this.setAttributeNS(name.space, name.local, x);
+    }
+
+    return groups.each(value == null
+        ? (name.local ? attrNullNS : attrNull) : (typeof value == "function"
+        ? (name.local ? attrFunctionNS : attrFunction)
+        : (name.local ? attrConstantNS : attrConstant)));
+  };
+
+  groups.classed = function(name, value) {
+    var re = new RegExp("(^|\\s+)" + d3.requote(name) + "(\\s+|$)", "g");
+
+    // If no value is specified, return the first value.
+    if (arguments.length < 2) {
+      return first(function() {
+        re.lastIndex = 0;
+        return re.test(this.className);
+      });
+    }
+
+    /** @this {Element} */
+    function classedAdd() {
+      var classes = this.className;
+      re.lastIndex = 0;
+      if (!re.test(classes)) {
+        this.className = d3_collapse(classes + " " + name);
+      }
+    }
+
+    /** @this {Element} */
+    function classedRemove() {
+      var classes = d3_collapse(this.className.replace(re, " "));
+      this.className = classes.length ? classes : null;
+    }
+
+    /** @this {Element} */
+    function classedFunction() {
+      (value.apply(this, arguments)
+          ? classedAdd
+          : classedRemove).call(this);
+    }
+
+    return groups.each(typeof value == "function"
+        ? classedFunction : value
+        ? classedAdd
+        : classedRemove);
+  };
+
+  groups.style = function(name, value, priority) {
+    if (arguments.length < 3) priority = null;
+
+    // If no value is specified, return the first value.
+    if (arguments.length < 2) {
+      return first(function() {
+        return window.getComputedStyle(this, null).getPropertyValue(name);
+      });
+    }
+
+    /** @this {Element} */
+    function styleNull() {
+      this.style.removeProperty(name);
+    }
+
+    /** @this {Element} */
+    function styleConstant() {
+      this.style.setProperty(name, value, priority);
+    }
+
+    /** @this {Element} */
+    function styleFunction() {
+      var x = value.apply(this, arguments);
+      if (x == null) this.style.removeProperty(name);
+      else this.style.setProperty(name, x, priority);
+    }
+
+    return groups.each(value == null
+        ? styleNull : (typeof value == "function"
+        ? styleFunction : styleConstant));
+  };
+
+  groups.property = function(name, value) {
+    name = d3.ns.qualify(name);
+
+    // If no value is specified, return the first value.
+    if (arguments.length < 2) {
+      return first(function() {
+        return this[name];
+      });
+    }
+
+    /** @this {Element} */
+    function propertyNull() {
+      delete this[name];
+    }
+
+    /** @this {Element} */
+    function propertyConstant() {
+      this[name] = value;
+    }
+
+    /** @this {Element} */
+    function propertyFunction() {
+      var x = value.apply(this, arguments);
+      if (x == null) delete this[name];
+      else this[name] = x;
+    }
+
+    return groups.each(value == null
+        ? propertyNull : (typeof value == "function"
+        ? propertyFunction : propertyConstant));
+  };
+
+  groups.text = function(value) {
+
+    // If no value is specified, return the first value.
+    if (arguments.length < 1) {
+      return first(function() {
+        return this.textContent;
+      });
+    }
+
+    /** @this {Element} */
+    function textNull() {
+      while (this.lastChild) this.removeChild(this.lastChild);
+    }
+
+    /** @this {Element} */
+    function textConstant() {
+      this.appendChild(document.createTextNode(value));
+    }
+
+    /** @this {Element} */
+    function textFunction() {
+      var x = value.apply(this, arguments);
+      if (x != null) this.appendChild(document.createTextNode(x));
+    }
+
+    groups.each(textNull);
+    return value == null ? groups
+        : groups.each(typeof value == "function"
+        ? textFunction : textConstant);
+  };
+
+  groups.html = function(value) {
+
+    // If no value is specified, return the first value.
+    if (arguments.length < 1) {
+      return first(function() {
+        return this.innerHTML;
+      });
+    }
+
+    /** @this {Element} */
+    function htmlConstant() {
+      this.innerHTML = value;
+    }
+
+    /** @this {Element} */
+    function htmlFunction() {
+      this.innerHTML = value.apply(this, arguments);
+    }
+
+    return groups.each(typeof value == "function"
+        ? htmlFunction : htmlConstant);
+  };
+
+  // TODO append(node)?
+  // TODO append(function)?
+  groups.append = function(name) {
+    name = d3.ns.qualify(name);
+
+    function append(node) {
+      return node.appendChild(document.createElement(name));
+    }
+
+    function appendNS(node) {
+      return node.appendChild(document.createElementNS(name.space, name.local));
+    }
+
+    return select(name.local ? appendNS : append);
+  };
+
+  // TODO insert(node, function)?
+  // TODO insert(function, string)?
+  // TODO insert(function, function)?
+  groups.insert = function(name, before) {
+    name = d3.ns.qualify(name);
+
+    function insert(node) {
+      return node.insertBefore(
+          document.createElement(name),
+          d3_select(before, node));
+    }
+
+    function insertNS(node) {
+      return node.insertBefore(
+          document.createElementNS(name.space, name.local),
+          d3_select(before, node));
+    }
+
+    return select(name.local ? insertNS : insert);
+  };
+
+  // TODO remove(selector)?
+  // TODO remove(node)?
+  // TODO remove(function)?
+  groups.remove = function() {
+    return select(function(node) {
+      var parent = node.parentNode;
+      parent.removeChild(node);
+      return parent;
+    });
+  };
+
+  groups.sort = function(comparator) {
+    comparator = d3_selection_comparator.apply(this, arguments);
+    for (var j = 0, m = groups.length; j < m; j++) {
+      var group = groups[j];
+      group.sort(comparator);
+      for (var i = 1, n = group.length, prev = group[0]; i < n; i++) {
+        var node = group[i];
+        if (node) {
+          if (prev) prev.parentNode.insertBefore(node, prev.nextSibling);
+          prev = node;
+        }
+      }
+    }
+    return groups;
+  };
+
+  // type can be namespaced, e.g., "click.foo"
+  // listener can be null for removal
+  groups.on = function(type, listener) {
+
+    // parse the type specifier
+    var i = type.indexOf("."),
+        typo = i == -1 ? type : type.substring(0, i),
+        name = "__on" + type;
+
+    // remove the old event listener, and add the new event listener
+    return groups.each(function(d, i) {
+      if (this[name]) this.removeEventListener(typo, this[name], false);
+      if (listener) this.addEventListener(typo, this[name] = l, false);
+
+      // wrapped event listener that preserves d, i
+      function l(e) {
+        var o = d3.event; // Events can be reentrant (e.g., focus).
+        d3.event = e;
+        try {
+          listener.call(this, d, i);
+        } finally {
+          d3.event = o;
+        }
+      }
+    });
+  };
+
+  // TODO slice?
+
+  groups.transition = function() {
+    return d3_transition(groups);
+  };
+
+  groups.call = d3_call;
+
+  return groups;
+}
+
+function d3_selectionEnter(groups) {
+
+  function select(select) {
+    var subgroups = [],
+        subgroup,
+        subnode,
+        group,
+        node;
+    for (var j = 0, m = groups.length; j < m; j++) {
+      group = groups[j];
+      subgroups.push(subgroup = []);
+      subgroup.parentNode = group.parentNode;
+      subgroup.parentData = group.parentData;
+      for (var i = 0, n = group.length; i < n; i++) {
+        if (node = group[i]) {
+          subgroup.push(subnode = select(group.parentNode));
+          subnode.__data__ = node.__data__;
+        } else {
+          subgroup.push(null);
+        }
+      }
+    }
+    return d3_selection(subgroups);
+  }
+
+  // TODO append(node)?
+  // TODO append(function)?
+  groups.append = function(name) {
+    name = d3.ns.qualify(name);
+
+    function append(node) {
+      return node.appendChild(document.createElement(name));
+    }
+
+    function appendNS(node) {
+      return node.appendChild(document.createElementNS(name.space, name.local));
+    }
+
+    return select(name.local ? appendNS : append);
+  };
+
+  // TODO insert(node, function)?
+  // TODO insert(function, string)?
+  // TODO insert(function, function)?
+  groups.insert = function(name, before) {
+    name = d3.ns.qualify(name);
+
+    function insert(node) {
+      return node.insertBefore(
+          document.createElement(name),
+          d3_select(before, node));
+    }
+
+    function insertNS(node) {
+      return node.insertBefore(
+          document.createElementNS(name.space, name.local),
+          d3_select(before, node));
+    }
+
+    return select(name.local ? insertNS : insert);
+  };
+
+  return groups;
+}
+
+function d3_selection_comparator(comparator) {
+  if (!arguments.length) comparator = d3.ascending;
+  return function(a, b) {
+    return comparator(a && a.__data__, b && b.__data__);
+  };
+}
+d3.transition = d3_root.transition;
+
+var d3_transitionId = 0,
+    d3_transitionInheritId = 0;
+
+function d3_transition(groups) {
+  var transition = {},
+      transitionId = d3_transitionInheritId || ++d3_transitionId,
+      tweens = {},
+      interpolators = [],
+      remove = false,
+      event = d3.dispatch("start", "end"),
+      stage = [],
+      delay = [],
+      duration = [],
+      durationMax,
+      ease = d3.ease("cubic-in-out");
+
+  //
+  // Be careful with concurrent transitions!
+  //
+  // Say transition A causes an exit. Before A finishes, a transition B is
+  // created, and believes it only needs to do an update, because the elements
+  // haven't been removed yet (which happens at the very end of the exit
+  // transition).
+  //
+  // Even worse, what if either transition A or B has a staggered delay? Then,
+  // some elements may be removed, while others remain. Transition B does not
+  // know to enter the elements because they were still present at the time
+  // the transition B was created (but not yet started).
+  //
+  // To prevent such confusion, we only trigger end events for transitions if
+  // the transition ending is the only one scheduled for the given element.
+  // Similarly, we only allow one transition to be active for any given
+  // element, so that concurrent transitions do not overwrite each other's
+  // properties.
+  //
+  // TODO Support transition namespaces, so that transitions can proceed
+  // concurrently on the same element if needed. Hopefully, this is rare!
+  //
+
+  groups.each(function() {
+    (this.__transition__ || (this.__transition__ = {})).owner = transitionId;
+  });
+
+  function step(elapsed) {
+    var clear = true,
+        k = -1;
+    groups.each(function() {
+      if (stage[++k] == 2) return; // ended
+      var t = (elapsed - delay[k]) / duration[k],
+          tx = this.__transition__,
+          te, // ease(t)
+          tk, // tween key
+          ik = interpolators[k];
+
+      // Check if the (un-eased) time is outside the range [0,1].
+      if (t < 1) {
+        clear = false;
+        if (t < 0) return;
+      } else {
+        t = 1;
+      }
+
+      // Determine the stage of this transition.
+      // 0 - Not yet started.
+      // 1 - In progress.
+      // 2 - Ended.
+      if (stage[k]) {
+        if (!tx || tx.active != transitionId) {
+          stage[k] = 2;
+          return;
+        }
+      } else if (!tx || tx.active > transitionId) {
+        stage[k] = 2;
+        return;
+      } else {
+        stage[k] = 1;
+        event.start.dispatch.apply(this, arguments);
+        ik = interpolators[k] = {};
+        tx.active = transitionId;
+        for (tk in tweens) ik[tk] = tweens[tk].apply(this, arguments);
+      }
+
+      // Apply the interpolators!
+      te = ease(t);
+      for (tk in tweens) ik[tk].call(this, te);
+
+      // Handle ending transitions.
+      if (t == 1) {
+        stage[k] = 2;
+        if (tx.active == transitionId) {
+          var owner = tx.owner;
+          if (owner == transitionId) {
+            delete this.__transition__;
+            if (remove) this.parentNode.removeChild(this);
+          }
+          d3_transitionInheritId = transitionId;
+          event.end.dispatch.apply(this, arguments);
+          d3_transitionInheritId = 0;
+          tx.owner = owner;
+        }
+      }
+    });
+    return clear;
+  }
+
+  transition.delay = function(value) {
+    var delayMin = Infinity,
+        k = -1;
+    if (typeof value == "function") {
+      groups.each(function(d, i) {
+        var x = delay[++k] = +value.apply(this, arguments);
+        if (x < delayMin) delayMin = x;
+      });
+    } else {
+      delayMin = +value;
+      groups.each(function(d, i) {
+        delay[++k] = delayMin;
+      });
+    }
+    d3_timer(step, delayMin);
+    return transition;
+  };
+
+  transition.duration = function(value) {
+    var k = -1;
+    if (typeof value == "function") {
+      durationMax = 0;
+      groups.each(function(d, i) {
+        var x = duration[++k] = +value.apply(this, arguments);
+        if (x > durationMax) durationMax = x;
+      });
+    } else {
+      durationMax = +value;
+      groups.each(function(d, i) {
+        duration[++k] = durationMax;
+      });
+    }
+    return transition;
+  };
+
+  transition.ease = function(value) {
+    ease = typeof value == "function" ? value : d3.ease.apply(d3, arguments);
+    return transition;
+  };
+
+  transition.attrTween = function(name, tween) {
+
+    /** @this {Element} */
+    function attrTween(d, i) {
+      var f = tween.call(this, d, i, this.getAttribute(name));
+      return function(t) {
+        this.setAttribute(name, f(t));
+      };
+    }
+
+    /** @this {Element} */
+    function attrTweenNS(d, i) {
+      var f = tween.call(this, d, i, this.getAttributeNS(name.space, name.local));
+      return function(t) {
+        this.setAttributeNS(name.space, name.local, f(t));
+      };
+    }
+
+    tweens["attr." + name] = name.local ? attrTweenNS : attrTween;
+    return transition;
+  };
+
+  transition.attr = function(name, value) {
+    return transition.attrTween(name, d3_transitionTween(value));
+  };
+
+  transition.styleTween = function(name, tween, priority) {
+    if (arguments.length < 3) priority = null;
+
+    /** @this {Element} */
+    function styleTween(d, i) {
+      var f = tween.call(this, d, i, window.getComputedStyle(this, null).getPropertyValue(name));
+      return function(t) {
+        this.style.setProperty(name, f(t), priority);
+      };
+    }
+
+    tweens["style." + name] = styleTween;
+    return transition;
+  };
+
+  transition.style = function(name, value, priority) {
+    if (arguments.length < 3) priority = null;
+    return transition.styleTween(name, d3_transitionTween(value), priority);
+  };
+
+  transition.select = function(query) {
+    var k, t = d3_transition(groups.select(query)).ease(ease);
+    k = -1; t.delay(function(d, i) { return delay[++k]; });
+    k = -1; t.duration(function(d, i) { return duration[++k]; });
+    return t;
+  };
+
+  transition.selectAll = function(query) {
+    var k, t = d3_transition(groups.selectAll(query)).ease(ease);
+    k = -1; t.delay(function(d, i) { return delay[i ? k : ++k]; })
+    k = -1; t.duration(function(d, i) { return duration[i ? k : ++k]; });
+    return t;
+  };
+
+  transition.remove = function() {
+    remove = true;
+    return transition;
+  };
+
+  transition.each = function(type, listener) {
+    event[type].add(listener);
+    return transition;
+  };
+
+  transition.call = d3_call;
+
+  return transition.delay(0).duration(250);
+}
+
+function d3_transitionTween(b) {
+  return typeof b == "function"
+      ? function(d, i, a) { return d3.interpolate(a, String(b.call(this, d, i))); }
+      : (b = String(b), function(d, i, a) { return d3.interpolate(a, b); });
+}
+var d3_timer_queue = null,
+    d3_timer_timeout = 0,
+    d3_timer_interval;
+
+// The timer will continue to fire until callback returns true.
+d3.timer = function(callback) {
+  d3_timer(callback, 0);
+};
+
+function d3_timer(callback, delay) {
+  var now = Date.now(),
+      found = false,
+      start = now + delay,
+      t0,
+      t1 = d3_timer_queue;
+
+  if (!isFinite(delay)) return;
+
+  // Scan the queue for earliest callback.
+  while (t1) {
+    if (t1.callback == callback) {
+      t1.then = now;
+      t1.delay = delay;
+      found = true;
+    } else {
+      var x = t1.then + t1.delay;
+      if (x < start) start = x;
+    }
+    t0 = t1;
+    t1 = t1.next;
+  }
+
+  // Otherwise, add the callback to the queue.
+  if (!found) d3_timer_queue = {
+    callback: callback,
+    then: now,
+    delay: delay,
+    next: d3_timer_queue
+  };
+
+  if (!d3_timer_interval) {
+    clearTimeout(d3_timer_timeout);
+    d3_timer_timeout = setTimeout(d3_timer_start, Math.max(24, start - now));
+  }
+}
+
+function d3_timer_start() {
+  d3_timer_interval = 1;
+  d3_timer_timeout = 0;
+  d3_timer_frame(d3_timer_step);
+}
+
+function d3_timer_step() {
+  var elapsed,
+      now = Date.now(),
+      t0 = null,
+      t1 = d3_timer_queue;
+  while (t1) {
+    elapsed = now - t1.then;
+    if (elapsed > t1.delay) t1.flush = t1.callback(elapsed);
+    t1 = (t0 = t1).next;
+  }
+  d3_timer_flush();
+  if (d3_timer_interval) d3_timer_frame(d3_timer_step);
+}
+
+// Flush after callbacks, to avoid concurrent queue modification.
+function d3_timer_flush() {
+  var t0 = null,
+      t1 = d3_timer_queue;
+  while (t1) {
+    t1 = t1.flush
+        ? (t0 ? t0.next = t1.next : d3_timer_queue = t1.next)
+        : (t0 = t1).next;
+  }
+  if (!t0) d3_timer_interval = 0;
+}
+
+var d3_timer_frame = window.requestAnimationFrame
+    || window.webkitRequestAnimationFrame
+    || window.mozRequestAnimationFrame
+    || window.oRequestAnimationFrame
+    || window.msRequestAnimationFrame
+    || function(callback) { setTimeout(callback, 17); };
+d3.scale = {};
+d3.scale.linear = function() {
+  var x0 = 0,
+      x1 = 1,
+      y0 = 0,
+      y1 = 1,
+      kx = 1, // 1 / (x1 - x0)
+      ky = 1, // (x1 - x0) / (y1 - y0)
+      interpolate = d3.interpolate,
+      i = interpolate(y0, y1);
+
+  function scale(x) {
+    return i((x - x0) * kx);
+  }
+
+  // Note: requires range is coercible to number!
+  scale.invert = function(y) {
+    return (y - y0) * ky + x0;
+  };
+
+  scale.domain = function(x) {
+    if (!arguments.length) return [x0, x1];
+    x0 = +x[0];
+    x1 = +x[1];
+    kx = 1 / (x1 - x0);
+    ky = (x1 - x0) / (y1 - y0);
+    return scale;
+  };
+
+  scale.range = function(x) {
+    if (!arguments.length) return [y0, y1];
+    y0 = x[0];
+    y1 = x[1];
+    ky = (x1 - x0) / (y1 - y0);
+    i = interpolate(y0, y1);
+    return scale;
+  };
+
+  scale.rangeRound = function(x) {
+    return scale.range(x).interpolate(d3.interpolateRound);
+  };
+
+  scale.interpolate = function(x) {
+    if (!arguments.length) return interpolate;
+    i = (interpolate = x)(y0, y1);
+    return scale;
+  };
+
+  // TODO Dates? Ugh.
+  function tickRange(m) {
+    var start = Math.min(x0, x1),
+        stop = Math.max(x0, x1),
+        span = stop - start,
+        step = Math.pow(10, Math.floor(Math.log(span / m) / Math.LN10)),
+        err = m / (span / step);
+
+    // Filter ticks to get closer to the desired count.
+    if (err <= .15) step *= 10;
+    else if (err <= .35) step *= 5;
+    else if (err <= .75) step *= 2;
+
+    // Round start and stop values to step interval.
+    return {
+      start: Math.ceil(start / step) * step,
+      stop: Math.floor(stop / step) * step + step * .5, // inclusive
+      step: step
+    };
+  }
+
+  scale.ticks = function(m) {
+    var range = tickRange(m);
+    return d3.range(range.start, range.stop, range.step);
+  };
+
+  scale.tickFormat = function(m) {
+    var n = Math.max(0, -Math.floor(Math.log(tickRange(m).step) / Math.LN10 + .01));
+    return d3.format(",." + n + "f");
+  };
+
+  return scale;
+};
+d3.scale.log = function() {
+  var linear = d3.scale.linear(),
+      log = d3_scale_log,
+      pow = log.pow;
+
+  function scale(x) {
+    return linear(log(x));
+  }
+
+  scale.invert = function(x) {
+    return pow(linear.invert(x));
+  };
+
+  scale.domain = function(x) {
+    if (!arguments.length) return linear.domain().map(pow);
+    log = (x[0] || x[1]) < 0 ? d3_scale_logn : d3_scale_log;
+    pow = log.pow;
+    linear.domain(x.map(log));
+    return scale;
+  };
+
+  scale.range = d3.rebind(scale, linear.range);
+  scale.rangeRound = d3.rebind(scale, linear.rangeRound);
+  scale.interpolate = d3.rebind(scale, linear.interpolate);
+
+  scale.ticks = function() {
+    var d = linear.domain(),
+        ticks = [];
+    if (d.every(isFinite)) {
+      var i = Math.floor(d[0]),
+          j = Math.ceil(d[1]),
+          u = pow(d[0]),
+          v = pow(d[1]);
+      if (log === d3_scale_logn) {
+        ticks.push(pow(i));
+        for (; i++ < j;) for (var k = 9; k > 0; k--) ticks.push(pow(i) * k);
+      } else {
+        for (; i < j; i++) for (var k = 1; k < 10; k++) ticks.push(pow(i) * k);
+        ticks.push(pow(i));
+      }
+      for (i = 0; ticks[i] < u; i++) {} // strip small values
+      for (j = ticks.length; ticks[j - 1] > v; j--) {} // strip big values
+      ticks = ticks.slice(i, j);
+    }
+    return ticks;
+  };
+
+  scale.tickFormat = function() {
+    return function(d) { return d.toPrecision(1); };
+  };
+
+  return scale;
+};
+
+function d3_scale_log(x) {
+  return Math.log(x) / Math.LN10;
+}
+
+function d3_scale_logn(x) {
+  return -Math.log(-x) / Math.LN10;
+}
+
+d3_scale_log.pow = function(x) {
+  return Math.pow(10, x);
+};
+
+d3_scale_logn.pow = function(x) {
+  return -Math.pow(10, -x);
+};
+d3.scale.pow = function() {
+  var linear = d3.scale.linear(),
+      tick = d3.scale.linear(), // TODO better tick formatting...
+      exponent = 1,
+      powp = Number,
+      powb = powp;
+
+  function scale(x) {
+    return linear(powp(x));
+  }
+
+  scale.invert = function(x) {
+    return powb(linear.invert(x));
+  };
+
+  scale.domain = function(x) {
+    if (!arguments.length) return linear.domain().map(powb);
+    var pow = (x[0] || x[1]) < 0 ? d3_scale_pown : d3_scale_pow;
+    powp = pow(exponent);
+    powb = pow(1 / exponent);
+    linear.domain(x.map(powp));
+    tick.domain(x);
+    return scale;
+  };
+
+  scale.range = d3.rebind(scale, linear.range);
+  scale.rangeRound = d3.rebind(scale, linear.rangeRound);
+  scale.interpolate = d3.rebind(scale, linear.interpolate);
+  scale.ticks = tick.ticks;
+  scale.tickFormat = tick.tickFormat;
+
+  scale.exponent = function(x) {
+    if (!arguments.length) return exponent;
+    var domain = scale.domain();
+    exponent = x;
+    return scale.domain(domain);
+  };
+
+  return scale;
+};
+
+function d3_scale_pow(e) {
+  return function(x) {
+    return Math.pow(x, e);
+  };
+}
+
+function d3_scale_pown(e) {
+  return function(x) {
+    return -Math.pow(-x, e);
+  };
+}
+d3.scale.sqrt = function() {
+  return d3.scale.pow().exponent(.5);
+};
+d3.scale.ordinal = function() {
+  var domain = [],
+      index = {},
+      range = [],
+      rangeBand = 0;
+
+  function scale(x) {
+    var i = x in index ? index[x] : (index[x] = domain.push(x) - 1);
+    return range[i % range.length];
+  }
+
+  scale.domain = function(x) {
+    if (!arguments.length) return domain;
+    domain = x;
+    index = {};
+    var i = -1, j = -1, n = domain.length; while (++i < n) {
+      x = domain[i];
+      if (!(x in index)) index[x] = ++j;
+    }
+    return scale;
+  };
+
+  scale.range = function(x) {
+    if (!arguments.length) return range;
+    range = x;
+    return scale;
+  };
+
+  scale.rangePoints = function(x, padding) {
+    if (arguments.length < 2) padding = 0;
+    var start = x[0],
+        stop = x[1],
+        step = (stop - start) / (domain.length - 1 + padding);
+    range = domain.length == 1
+        ? [(start + stop) / 2]
+        : d3.range(start + step * padding / 2, stop + step / 2, step);
+    rangeBand = 0;
+    return scale;
+  };
+
+  scale.rangeBands = function(x, padding) {
+    if (arguments.length < 2) padding = 0;
+    var start = x[0],
+        stop = x[1],
+        step = (stop - start) / (domain.length + padding);
+    range = d3.range(start + step * padding, stop, step);
+    rangeBand = step * (1 - padding);
+    return scale;
+  };
+
+  scale.rangeRoundBands = function(x, padding) {
+    if (arguments.length < 2) padding = 0;
+    var start = x[0],
+        stop = x[1],
+        diff = stop - start,
+        step = Math.floor(diff / (domain.length + padding)),
+        err = diff - (domain.length - padding) * step;
+    range = d3.range(start + Math.round(err / 2), stop, step);
+    rangeBand = Math.round(step * (1 - padding));
+    return scale;
+  };
+
+  scale.rangeBand = function() {
+    return rangeBand;
+  };
+
+  return scale;
+};
+/*
+ * This product includes color specifications and designs developed by Cynthia
+ * Brewer (http://colorbrewer.org/). See lib/colorbrewer for more information.
+ */
+
+d3.scale.category10 = function() {
+  return d3.scale.ordinal().range(d3_category10);
+};
+
+d3.scale.category20 = function() {
+  return d3.scale.ordinal().range(d3_category20);
+};
+
+d3.scale.category20b = function() {
+  return d3.scale.ordinal().range(d3_category20b);
+};
+
+d3.scale.category20c = function() {
+  return d3.scale.ordinal().range(d3_category20c);
+};
+
+var d3_category10 = [
+  "#1f77b4", "#ff7f0e", "#2ca02c", "#d62728", "#9467bd",
+  "#8c564b", "#e377c2", "#7f7f7f", "#bcbd22", "#17becf"
+];
+
+var d3_category20 = [
+  "#1f77b4", "#aec7e8",
+  "#ff7f0e", "#ffbb78",
+  "#2ca02c", "#98df8a",
+  "#d62728", "#ff9896",
+  "#9467bd", "#c5b0d5",
+  "#8c564b", "#c49c94",
+  "#e377c2", "#f7b6d2",
+  "#7f7f7f", "#c7c7c7",
+  "#bcbd22", "#dbdb8d",
+  "#17becf", "#9edae5"
+];
+
+var d3_category20b = [
+  "#393b79", "#5254a3", "#6b6ecf", "#9c9ede",
+  "#637939", "#8ca252", "#b5cf6b", "#cedb9c",
+  "#8c6d31", "#bd9e39", "#e7ba52", "#e7cb94",
+  "#843c39", "#ad494a", "#d6616b", "#e7969c",
+  "#7b4173", "#a55194", "#ce6dbd", "#de9ed6"
+];
+
+var d3_category20c = [
+  "#3182bd", "#6baed6", "#9ecae1", "#c6dbef",
+  "#e6550d", "#fd8d3c", "#fdae6b", "#fdd0a2",
+  "#31a354", "#74c476", "#a1d99b", "#c7e9c0",
+  "#756bb1", "#9e9ac8", "#bcbddc", "#dadaeb",
+  "#636363", "#969696", "#bdbdbd", "#d9d9d9"
+];
+d3.scale.quantile = function() {
+  var domain = [],
+      range = [],
+      thresholds = [];
+
+  function rescale() {
+    var i = -1,
+        n = thresholds.length = range.length,
+        k = domain.length / n;
+    while (++i < n) thresholds[i] = domain[~~(i * k)];
+  }
+
+  function quantile(value) {
+    if (isNaN(value = +value)) return NaN;
+    var low = 0, high = thresholds.length - 1;
+    while (low <= high) {
+      var mid = (low + high) >> 1, midValue = thresholds[mid];
+      if (midValue < value) low = mid + 1;
+      else if (midValue > value) high = mid - 1;
+      else return mid;
+    }
+    return high < 0 ? 0 : high;
+  }
+
+  function scale(x) {
+    return range[quantile(x)];
+  }
+
+  scale.domain = function(x) {
+    if (!arguments.length) return domain;
+    domain = x.filter(function(d) { return !isNaN(d); }).sort(d3.ascending);
+    rescale();
+    return scale;
+  };
+
+  scale.range = function(x) {
+    if (!arguments.length) return range;
+    range = x;
+    rescale();
+    return scale;
+  };
+
+  scale.quantiles = function() {
+    return thresholds;
+  };
+
+  return scale;
+};
+d3.scale.quantize = function() {
+  var x0 = 0,
+      x1 = 1,
+      kx = 2,
+      i = 1,
+      range = [0, 1];
+
+  function scale(x) {
+    return range[Math.max(0, Math.min(i, Math.floor(kx * (x - x0))))];
+  }
+
+  scale.domain = function(x) {
+    if (!arguments.length) return [x0, x1];
+    x0 = x[0];
+    x1 = x[1];
+    kx = range.length / (x1 - x0);
+    return scale;
+  };
+
+  scale.range = function(x) {
+    if (!arguments.length) return range;
+    range = x;
+    kx = range.length / (x1 - x0);
+    i = range.length - 1;
+    return scale;
+  };
+
+  return scale;
+};
+d3.svg = {};
+d3.svg.arc = function() {
+  var innerRadius = d3_svg_arcInnerRadius,
+      outerRadius = d3_svg_arcOuterRadius,
+      startAngle = d3_svg_arcStartAngle,
+      endAngle = d3_svg_arcEndAngle;
+
+  function arc() {
+    var r0 = innerRadius.apply(this, arguments),
+        r1 = outerRadius.apply(this, arguments),
+        a0 = startAngle.apply(this, arguments) + d3_svg_arcOffset,
+        a1 = endAngle.apply(this, arguments) + d3_svg_arcOffset,
+        da = a1 - a0,
+        df = da < Math.PI ? "0" : "1",
+        c0 = Math.cos(a0),
+        s0 = Math.sin(a0),
+        c1 = Math.cos(a1),
+        s1 = Math.sin(a1);
+    return da >= d3_svg_arcMax
+      ? (r0
+      ? "M0," + r1
+      + "A" + r1 + "," + r1 + " 0 1,1 0," + (-r1)
+      + "A" + r1 + "," + r1 + " 0 1,1 0," + r1
+      + "M0," + r0
+      + "A" + r0 + "," + r0 + " 0 1,1 0," + (-r0)
+      + "A" + r0 + "," + r0 + " 0 1,1 0," + r0
+      + "Z"
+      : "M0," + r1
+      + "A" + r1 + "," + r1 + " 0 1,1 0," + (-r1)
+      + "A" + r1 + "," + r1 + " 0 1,1 0," + r1
+      + "Z")
+      : (r0
+      ? "M" + r1 * c0 + "," + r1 * s0
+      + "A" + r1 + "," + r1 + " 0 " + df + ",1 " + r1 * c1 + "," + r1 * s1
+      + "L" + r0 * c1 + "," + r0 * s1
+      + "A" + r0 + "," + r0 + " 0 " + df + ",0 " + r0 * c0 + "," + r0 * s0
+      + "Z"
+      : "M" + r1 * c0 + "," + r1 * s0
+      + "A" + r1 + "," + r1 + " 0 " + df + ",1 " + r1 * c1 + "," + r1 * s1
+      + "L0,0"
+      + "Z");
+  }
+
+  arc.innerRadius = function(v) {
+    if (!arguments.length) return innerRadius;
+    innerRadius = d3_functor(v);
+    return arc;
+  };
+
+  arc.outerRadius = function(v) {
+    if (!arguments.length) return outerRadius;
+    outerRadius = d3_functor(v);
+    return arc;
+  };
+
+  arc.startAngle = function(v) {
+    if (!arguments.length) return startAngle;
+    startAngle = d3_functor(v);
+    return arc;
+  };
+
+  arc.endAngle = function(v) {
+    if (!arguments.length) return endAngle;
+    endAngle = d3_functor(v);
+    return arc;
+  };
+
+  arc.centroid = function() {
+    var r = (innerRadius.apply(this, arguments)
+        + outerRadius.apply(this, arguments)) / 2,
+        a = (startAngle.apply(this, arguments)
+        + endAngle.apply(this, arguments)) / 2 + d3_svg_arcOffset;
+    return [Math.cos(a) * r, Math.sin(a) * r];
+  };
+
+  return arc;
+};
+
+var d3_svg_arcOffset = -Math.PI / 2,
+    d3_svg_arcMax = 2 * Math.PI - 1e-6;
+
+function d3_svg_arcInnerRadius(d) {
+  return d.innerRadius;
+}
+
+function d3_svg_arcOuterRadius(d) {
+  return d.outerRadius;
+}
+
+function d3_svg_arcStartAngle(d) {
+  return d.startAngle;
+}
+
+function d3_svg_arcEndAngle(d) {
+  return d.endAngle;
+}
+d3.svg.line = function() {
+  var x = d3_svg_lineX,
+      y = d3_svg_lineY,
+      interpolate = "linear",
+      interpolator = d3_svg_lineInterpolators[interpolate],
+      tension = .7;
+
+  function line(d) {
+    return d.length < 1 ? null
+        : "M" + interpolator(d3_svg_linePoints(this, d, x, y), tension);
+  }
+
+  line.x = function(v) {
+    if (!arguments.length) return x;
+    x = v;
+    return line;
+  };
+
+  line.y = function(v) {
+    if (!arguments.length) return y;
+    y = v;
+    return line;
+  };
+
+  line.interpolate = function(v) {
+    if (!arguments.length) return interpolate;
+    interpolator = d3_svg_lineInterpolators[interpolate = v];
+    return line;
+  };
+
+  line.tension = function(v) {
+    if (!arguments.length) return tension;
+    tension = v;
+    return line;
+  };
+
+  return line;
+};
+
+// Converts the specified array of data into an array of points
+// (x-y tuples), by evaluating the specified `x` and `y` functions on each
+// data point. The `this` context of the evaluated functions is the specified
+// "self" object; each function is passed the current datum and index.
+function d3_svg_linePoints(self, d, x, y) {
+  var points = [],
+      i = -1,
+      n = d.length,
+      fx = typeof x == "function",
+      fy = typeof y == "function",
+      value;
+  if (fx && fy) {
+    while (++i < n) points.push([
+      x.call(self, value = d[i], i),
+      y.call(self, value, i)
+    ]);
+  } else if (fx) {
+    while (++i < n) points.push([x.call(self, d[i], i), y]);
+  } else if (fy) {
+    while (++i < n) points.push([x, y.call(self, d[i], i)]);
+  } else {
+    while (++i < n) points.push([x, y]);
+  }
+  return points;
+}
+
+// The default `x` property, which references d[0].
+function d3_svg_lineX(d) {
+  return d[0];
+}
+
+// The default `y` property, which references d[1].
+function d3_svg_lineY(d) {
+  return d[1];
+}
+
+// The various interpolators supported by the `line` class.
+var d3_svg_lineInterpolators = {
+  "linear": d3_svg_lineLinear,
+  "step-before": d3_svg_lineStepBefore,
+  "step-after": d3_svg_lineStepAfter,
+  "basis": d3_svg_lineBasis,
+  "basis-closed": d3_svg_lineBasisClosed,
+  "cardinal": d3_svg_lineCardinal,
+  "cardinal-closed": d3_svg_lineCardinalClosed
+};
+
+// Linear interpolation; generates "L" commands.
+function d3_svg_lineLinear(points) {
+  var path = [],
+      i = 0,
+      n = points.length,
+      p = points[0];
+  path.push(p[0], ",", p[1]);
+  while (++i < n) path.push("L", (p = points[i])[0], ",", p[1]);
+  return path.join("");
+}
+
+// Step interpolation; generates "H" and "V" commands.
+function d3_svg_lineStepBefore(points) {
+  var path = [],
+      i = 0,
+      n = points.length,
+      p = points[0];
+  path.push(p[0], ",", p[1]);
+  while (++i < n) path.push("V", (p = points[i])[1], "H", p[0]);
+  return path.join("");
+}
+
+// Step interpolation; generates "H" and "V" commands.
+function d3_svg_lineStepAfter(points) {
+  var path = [],
+      i = 0,
+      n = points.length,
+      p = points[0];
+  path.push(p[0], ",", p[1]);
+  while (++i < n) path.push("H", (p = points[i])[0], "V", p[1]);
+  return path.join("");
+}
+
+// Closed cardinal spline interpolation; generates "C" commands.
+function d3_svg_lineCardinalClosed(points, tension) {
+  return points.length < 3
+      ? d3_svg_lineLinear(points)
+      : points[0] + d3_svg_lineHermite(points,
+        d3_svg_lineCardinalTangents([points[points.length - 2]]
+        .concat(points, [points[1]]), tension));
+}
+
+// Cardinal spline interpolation; generates "C" commands.
+function d3_svg_lineCardinal(points, tension, closed) {
+  return points.length < 3
+      ? d3_svg_lineLinear(points)
+      : points[0] + d3_svg_lineHermite(points,
+        d3_svg_lineCardinalTangents(points, tension));
+}
+
+// Hermite spline construction; generates "C" commands.
+function d3_svg_lineHermite(points, tangents) {
+  if (tangents.length < 1
+      || (points.length != tangents.length
+      && points.length != tangents.length + 2)) {
+    return d3_svg_lineLinear(points);
+  }
+
+  var quad = points.length != tangents.length,
+      path = "",
+      p0 = points[0],
+      p = points[1],
+      t0 = tangents[0],
+      t = t0,
+      pi = 1;
+
+  if (quad) {
+    path += "Q" + (p[0] - t0[0] * 2 / 3) + "," + (p[1] - t0[1] * 2 / 3)
+        + "," + p[0] + "," + p[1];
+    p0 = points[1];
+    pi = 2;
+  }
+
+  if (tangents.length > 1) {
+    t = tangents[1];
+    p = points[pi];
+    pi++;
+    path += "C" + (p0[0] + t0[0]) + "," + (p0[1] + t0[1])
+        + "," + (p[0] - t[0]) + "," + (p[1] - t[1])
+        + "," + p[0] + "," + p[1];
+    for (var i = 2; i < tangents.length; i++, pi++) {
+      p = points[pi];
+      t = tangents[i];
+      path += "S" + (p[0] - t[0]) + "," + (p[1] - t[1])
+          + "," + p[0] + "," + p[1];
+    }
+  }
+
+  if (quad) {
+    var lp = points[pi];
+    path += "Q" + (p[0] + t[0] * 2 / 3) + "," + (p[1] + t[1] * 2 / 3)
+        + "," + lp[0] + "," + lp[1];
+  }
+
+  return path;
+}
+
+// Generates tangents for a cardinal spline.
+function d3_svg_lineCardinalTangents(points, tension) {
+  var tangents = [],
+      a = (1 - tension) / 2,
+      p0 = points[0],
+      p1 = points[1],
+      p2 = points[2],
+      i = 2,
+      n = points.length;
+  while (++i < n) {
+    tangents.push([a * (p2[0] - p0[0]), a * (p2[1] - p0[1])]);
+    p0 = p1;
+    p1 = p2;
+    p2 = points[i];
+  }
+  tangents.push([a * (p2[0] - p0[0]), a * (p2[1] - p0[1])]);
+  return tangents;
+}
+
+// Open B-spline interpolation; generates "C" commands.
+function d3_svg_lineBasis(points) {
+  if (points.length < 3) return d3_svg_lineLinear(points);
+  var path = [],
+      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.push(x0, ",", y0);
+  d3_svg_lineBasisBezier(path, px, py);
+  while (++i < n) {
+    pi = points[i];
+    px.shift(); px.push(pi[0]);
+    py.shift(); py.push(pi[1]);
+    d3_svg_lineBasisBezier(path, px, py);
+  }
+  i = -1;
+  while (++i < 2) {
+    px.shift(); px.push(pi[0]);
+    py.shift(); py.push(pi[1]);
+    d3_svg_lineBasisBezier(path, px, py);
+  }
+  return path.join("");
+}
+
+// Closed B-spline interpolation; generates "C" commands.
+function d3_svg_lineBasisClosed(points) {
+  var path,
+      i = -1,
+      n = points.length,
+      m = n + 4,
+      pi,
+      px = [],
+      py = [];
+  while (++i < 4) {
+    pi = points[i % n];
+    px.push(pi[0]);
+    py.push(pi[1]);
+  }
+  path = [
+    d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",",
+    d3_svg_lineDot4(d3_svg_lineBasisBezier3, py)
+  ];
+  --i; while (++i < m) {
+    pi = points[i % n];
+    px.shift(); px.push(pi[0]);
+    py.shift(); py.push(pi[1]);
+    d3_svg_lineBasisBezier(path, px, py);
+  }
+  return path.join("");
+}
+
+// Returns the dot product of the given four-element vectors.
+function d3_svg_lineDot4(a, b) {
+  return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
+}
+
+// Matrix to transform basis (b-spline) control points to bezier
+// control points. Derived from FvD 11.2.8.
+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];
+
+// Pushes a "C" Bézier curve onto the specified path array, given the
+// two specified four-element arrays which define the control points.
+function d3_svg_lineBasisBezier(path, x, y) {
+  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));
+}
+d3.svg.area = function() {
+  var x = d3_svg_lineX,
+      y0 = d3_svg_areaY0,
+      y1 = d3_svg_lineY,
+      interpolate = "linear",
+      interpolator = d3_svg_lineInterpolators[interpolate],
+      tension = .7;
+
+  // TODO horizontal / vertical / radial orientation
+
+  function area(d) {
+    return d.length < 1 ? null
+        : "M" + interpolator(d3_svg_linePoints(this, d, x, y1), tension)
+        + "L" + interpolator(d3_svg_linePoints(this, d, x, y0).reverse(), tension)
+        + "Z";
+  }
+
+  area.x = function(v) {
+    if (!arguments.length) return x;
+    x = v;
+    return area;
+  };
+
+  area.y0 = function(v) {
+    if (!arguments.length) return y0;
+    y0 = v;
+    return area;
+  };
+
+  area.y1 = function(v) {
+    if (!arguments.length) return y1;
+    y1 = v;
+    return area;
+  };
+
+  area.interpolate = function(v) {
+    if (!arguments.length) return interpolate;
+    interpolator = d3_svg_lineInterpolators[interpolate = v];
+    return area;
+  };
+
+  area.tension = function(v) {
+    if (!arguments.length) return tension;
+    tension = v;
+    return area;
+  };
+
+  return area;
+};
+
+function d3_svg_areaY0() {
+  return 0;
+}
+d3.svg.chord = function() {
+  var source = d3_svg_chordSource,
+      target = d3_svg_chordTarget,
+      radius = d3_svg_chordRadius,
+      startAngle = d3_svg_arcStartAngle,
+      endAngle = d3_svg_arcEndAngle;
+
+  // TODO Allow control point to be customized.
+
+  function chord(d, i) {
+    var s = subgroup(this, source, d, i),
+        t = subgroup(this, target, d, i);
+    return "M" + s.p0
+      + arc(s.r, s.p1) + (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)
+      + curve(t.r, t.p1, s.r, s.p0))
+      + "Z";
+  }
+
+  function subgroup(self, f, d, i) {
+    var subgroup = f.call(self, d, i),
+        r = radius.call(self, subgroup, i),
+        a0 = startAngle.call(self, subgroup, i) + d3_svg_arcOffset,
+        a1 = endAngle.call(self, subgroup, i) + d3_svg_arcOffset;
+    return {
+      r: r,
+      a0: a0,
+      a1: a1,
+      p0: [r * Math.cos(a0), r * Math.sin(a0)],
+      p1: [r * Math.cos(a1), r * Math.sin(a1)]
+    };
+  }
+
+  function equals(a, b) {
+    return a.a0 == b.a0 && a.a1 == b.a1;
+  }
+
+  function arc(r, p) {
+    return "A" + r + "," + r + " 0 0,1 " + p;
+  }
+
+  function curve(r0, p0, r1, p1) {
+    return "Q 0,0 " + p1;
+  }
+
+  chord.radius = function(v) {
+    if (!arguments.length) return radius;
+    radius = d3_functor(v);
+    return chord;
+  };
+
+  chord.source = function(v) {
+    if (!arguments.length) return source;
+    source = d3_functor(v);
+    return chord;
+  };
+
+  chord.target = function(v) {
+    if (!arguments.length) return target;
+    target = d3_functor(v);
+    return chord;
+  };
+
+  chord.startAngle = function(v) {
+    if (!arguments.length) return startAngle;
+    startAngle = d3_functor(v);
+    return chord;
+  };
+
+  chord.endAngle = function(v) {
+    if (!arguments.length) return endAngle;
+    endAngle = d3_functor(v);
+    return chord;
+  };
+
+  return chord;
+};
+
+function d3_svg_chordSource(d) {
+  return d.source;
+}
+
+function d3_svg_chordTarget(d) {
+  return d.target;
+}
+
+function d3_svg_chordRadius(d) {
+  return d.radius;
+}
+
+function d3_svg_chordStartAngle(d) {
+  return d.startAngle;
+}
+
+function d3_svg_chordEndAngle(d) {
+  return d.endAngle;
+}
+d3.svg.mouse = function(container) {
+  var point = (container.ownerSVGElement || container).createSVGPoint();
+  if ((d3_mouse_bug44083 < 0) && (window.scrollX || window.scrollY)) {
+    var svg = d3.select(document.body)
+      .append("svg:svg")
+        .style("position", "absolute")
+        .style("top", 0)
+        .style("left", 0);
+    var ctm = svg[0][0].getScreenCTM();
+    d3_mouse_bug44083 = !(ctm.f || ctm.e);
+    svg.remove();
+  }
+  if (d3_mouse_bug44083) {
+    point.x = d3.event.pageX;
+    point.y = d3.event.pageY;
+  } else {
+    point.x = d3.event.clientX;
+    point.y = d3.event.clientY;
+  }
+  point = point.matrixTransform(container.getScreenCTM().inverse());
+  return [point.x, point.y];
+};
+
+// https://bugs.webkit.org/show_bug.cgi?id=44083
+var d3_mouse_bug44083 = /WebKit/.test(navigator.userAgent) ? -1 : 0;
+d3.svg.symbol = function() {
+  var type = d3_svg_symbolType,
+      size = d3_svg_symbolSize;
+
+  function symbol(d, i) {
+    return (d3_svg_symbols[type.call(this, d, i)]
+        || d3_svg_symbols.circle)
+        (size.call(this, d, i));
+  }
+
+  symbol.type = function(x) {
+    if (!arguments.length) return type;
+    type = d3_functor(x);
+    return symbol;
+  };
+
+  // size of symbol in square pixels
+  symbol.size = function(x) {
+    if (!arguments.length) return size;
+    size = d3_functor(x);
+    return symbol;
+  };
+
+  return symbol;
+};
+
+// TODO cross-diagonal?
+d3.svg.symbolTypes = [
+  "circle",
+  "cross",
+  "diamond",
+  "square",
+  "triangle-down",
+  "triangle-up"
+];
+
+function d3_svg_symbolSize() {
+  return 64;
+}
+
+function d3_svg_symbolType() {
+  return "circle";
+}
+
+var d3_svg_symbols = {
+  "circle": function(size) {
+    var r = Math.sqrt(size / Math.PI);
+    return "M0," + r
+        + "A" + r + "," + r + " 0 1,1 0," + (-r)
+        + "A" + r + "," + r + " 0 1,1 0," + r
+        + "Z";
+  },
+  "cross": function(size) {
+    var r = Math.sqrt(size / 5) / 2;
+    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";
+  },
+  "diamond": function(size) {
+    var ry = Math.sqrt(size / (2 * d3_svg_symbolTan30)),
+        rx = ry * d3_svg_symbolTan30;
+    return "M0," + -ry
+        + "L" + rx + ",0"
+        + " 0," + ry
+        + " " + -rx + ",0"
+        + "Z";
+  },
+  "square": function(size) {
+    var r = Math.sqrt(size) / 2;
+    return "M" + -r + "," + -r
+        + "L" + r + "," + -r
+        + " " + r + "," + r
+        + " " + -r + "," + r
+        + "Z";
+  },
+  "triangle-down": function(size) {
+    var rx = Math.sqrt(size / d3_svg_symbolSqrt3),
+        ry = rx * d3_svg_symbolSqrt3 / 2;
+    return "M0," + ry
+        + "L" + rx +"," + -ry
+        + " " + -rx + "," + -ry
+        + "Z";
+  },
+  "triangle-up": function(size) {
+    var rx = Math.sqrt(size / d3_svg_symbolSqrt3),
+        ry = rx * d3_svg_symbolSqrt3 / 2;
+    return "M0," + -ry
+        + "L" + rx +"," + ry
+        + " " + -rx + "," + ry
+        + "Z";
+  }
+};
+
+var d3_svg_symbolSqrt3 = Math.sqrt(3),
+    d3_svg_symbolTan30 = Math.tan(30 * Math.PI / 180);
+})()
\ No newline at end of file
-- 
cgit 1.2.3-korg