Update d3 to 2.8.1

Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 0 insertions, 1881 deletions

diff --git a/visualize/static/d3.layout.js b/visualize/static/d3.layout.js
deleted file mode 100644
index d93fbe5c..00000000
--- a/visualize/static/d3.layout.js
+++ /dev/null
@@ -1,1881 +0,0 @@
-(function(){d3.layout = {};
-// Implements hierarchical edge bundling using Holten's algorithm. For each
-// input link, a path is computed that travels through the tree, up the parent
-// hierarchy to the least common ancestor, and then back down to the destination
-// node. Each path is simply an array of nodes.
-d3.layout.bundle = function() {
-  return function(links) {
-    var paths = [],
-        i = -1,
-        n = links.length;
-    while (++i < n) paths.push(d3_layout_bundlePath(links[i]));
-    return paths;
-  };
-};
-
-function d3_layout_bundlePath(link) {
-  var start = link.source,
-      end = link.target,
-      lca = d3_layout_bundleLeastCommonAncestor(start, end),
-      points = [start];
-  while (start !== lca) {
-    start = start.parent;
-    points.push(start);
-  }
-  var k = points.length;
-  while (end !== lca) {
-    points.splice(k, 0, end);
-    end = end.parent;
-  }
-  return points;
-}
-
-function d3_layout_bundleAncestors(node) {
-  var ancestors = [],
-      parent = node.parent;
-  while (parent != null) {
-    ancestors.push(node);
-    node = parent;
-    parent = parent.parent;
-  }
-  ancestors.push(node);
-  return ancestors;
-}
-
-function d3_layout_bundleLeastCommonAncestor(a, b) {
-  if (a === b) return a;
-  var aNodes = d3_layout_bundleAncestors(a),
-      bNodes = d3_layout_bundleAncestors(b),
-      aNode = aNodes.pop(),
-      bNode = bNodes.pop(),
-      sharedNode = null;
-  while (aNode === bNode) {
-    sharedNode = aNode;
-    aNode = aNodes.pop();
-    bNode = bNodes.pop();
-  }
-  return sharedNode;
-}
-d3.layout.chord = function() {
-  var chord = {},
-      chords,
-      groups,
-      matrix,
-      n,
-      padding = 0,
-      sortGroups,
-      sortSubgroups,
-      sortChords;
-
-  function relayout() {
-    var subgroups = {},
-        groupSums = [],
-        groupIndex = d3.range(n),
-        subgroupIndex = [],
-        k,
-        x,
-        x0,
-        i,
-        j;
-
-    chords = [];
-    groups = [];
-
-    // Compute the sum.
-    k = 0, i = -1; while (++i < n) {
-      x = 0, j = -1; while (++j < n) {
-        x += matrix[i][j];
-      }
-      groupSums.push(x);
-      subgroupIndex.push(d3.range(n));
-      k += x;
-    }
-
-    // Sort groups…
-    if (sortGroups) {
-      groupIndex.sort(function(a, b) {
-        return sortGroups(groupSums[a], groupSums[b]);
-      });
-    }
-
-    // Sort subgroups…
-    if (sortSubgroups) {
-      subgroupIndex.forEach(function(d, i) {
-        d.sort(function(a, b) {
-          return sortSubgroups(matrix[i][a], matrix[i][b]);
-        });
-      });
-    }
-
-    // Convert the sum to scaling factor for [0, 2pi].
-    // TODO Allow start and end angle to be specified.
-    // TODO Allow padding to be specified as percentage?
-    k = (2 * Math.PI - padding * n) / k;
-
-    // Compute the start and end angle for each group and subgroup.
-    // Note: Opera has a bug reordering object literal properties!
-    x = 0, i = -1; while (++i < n) {
-      x0 = x, j = -1; while (++j < n) {
-        var di = groupIndex[i],
-            dj = subgroupIndex[di][j],
-            v = matrix[di][dj],
-            a0 = x,
-            a1 = x += v * k;
-        subgroups[di + "-" + dj] = {
-          index: di,
-          subindex: dj,
-          startAngle: a0,
-          endAngle: a1,
-          value: v
-        };
-      }
-      groups.push({
-        index: di,
-        startAngle: x0,
-        endAngle: x,
-        value: (x - x0) / k
-      });
-      x += padding;
-    }
-
-    // Generate chords for each (non-empty) subgroup-subgroup link.
-    i = -1; while (++i < n) {
-      j = i - 1; while (++j < n) {
-        var source = subgroups[i + "-" + j],
-            target = subgroups[j + "-" + i];
-        if (source.value || target.value) {
-          chords.push(source.value < target.value
-              ? {source: target, target: source}
-              : {source: source, target: target});
-        }
-      }
-    }
-
-    if (sortChords) resort();
-  }
-
-  function resort() {
-    chords.sort(function(a, b) {
-      return sortChords(
-          (a.source.value + a.target.value) / 2,
-          (b.source.value + b.target.value) / 2);
-    });
-  }
-
-  chord.matrix = function(x) {
-    if (!arguments.length) return matrix;
-    n = (matrix = x) && matrix.length;
-    chords = groups = null;
-    return chord;
-  };
-
-  chord.padding = function(x) {
-    if (!arguments.length) return padding;
-    padding = x;
-    chords = groups = null;
-    return chord;
-  };
-
-  chord.sortGroups = function(x) {
-    if (!arguments.length) return sortGroups;
-    sortGroups = x;
-    chords = groups = null;
-    return chord;
-  };
-
-  chord.sortSubgroups = function(x) {
-    if (!arguments.length) return sortSubgroups;
-    sortSubgroups = x;
-    chords = null;
-    return chord;
-  };
-
-  chord.sortChords = function(x) {
-    if (!arguments.length) return sortChords;
-    sortChords = x;
-    if (chords) resort();
-    return chord;
-  };
-
-  chord.chords = function() {
-    if (!chords) relayout();
-    return chords;
-  };
-
-  chord.groups = function() {
-    if (!groups) relayout();
-    return groups;
-  };
-
-  return chord;
-};
-// A rudimentary force layout using Gauss-Seidel.
-d3.layout.force = function() {
-  var force = {},
-      event = d3.dispatch("tick"),
-      size = [1, 1],
-      drag,
-      alpha,
-      friction = .9,
-      linkDistance = d3_layout_forceLinkDistance,
-      linkStrength = d3_layout_forceLinkStrength,
-      charge = -30,
-      gravity = .1,
-      theta = .8,
-      interval,
-      nodes = [],
-      links = [],
-      distances,
-      strengths,
-      charges;
-
-  function repulse(node) {
-    return function(quad, x1, y1, x2, y2) {
-      if (quad.point !== node) {
-        var dx = quad.cx - node.x,
-            dy = quad.cy - node.y,
-            dn = 1 / Math.sqrt(dx * dx + dy * dy);
-
-        /* Barnes-Hut criterion. */
-        if ((x2 - x1) * dn < theta) {
-          var k = quad.charge * dn * dn;
-          node.px -= dx * k;
-          node.py -= dy * k;
-          return true;
-        }
-
-        if (quad.point && isFinite(dn)) {
-          var k = quad.pointCharge * dn * dn;
-          node.px -= dx * k;
-          node.py -= dy * k;
-        }
-      }
-      return !quad.charge;
-    };
-  }
-
-  function tick() {
-    var n = nodes.length,
-        m = links.length,
-        q,
-        i, // current index
-        o, // current object
-        s, // current source
-        t, // current target
-        l, // current distance
-        k, // current force
-        x, // x-distance
-        y; // y-distance
-
-    // gauss-seidel relaxation for links
-    for (i = 0; i < m; ++i) {
-      o = links[i];
-      s = o.source;
-      t = o.target;
-      x = t.x - s.x;
-      y = t.y - s.y;
-      if (l = (x * x + y * y)) {
-        l = alpha * strengths[i] * ((l = Math.sqrt(l)) - distances[i]) / l;
-        x *= l;
-        y *= l;
-        t.x -= x * (k = s.weight / (t.weight + s.weight));
-        t.y -= y * k;
-        s.x += x * (k = 1 - k);
-        s.y += y * k;
-      }
-    }
-
-    // apply gravity forces
-    if (k = alpha * gravity) {
-      x = size[0] / 2;
-      y = size[1] / 2;
-      i = -1; if (k) while (++i < n) {
-        o = nodes[i];
-        o.x += (x - o.x) * k;
-        o.y += (y - o.y) * k;
-      }
-    }
-
-    // compute quadtree center of mass and apply charge forces
-    if (charge) {
-      d3_layout_forceAccumulate(q = d3.geom.quadtree(nodes), alpha, charges);
-      i = -1; while (++i < n) {
-        if (!(o = nodes[i]).fixed) {
-          q.visit(repulse(o));
-        }
-      }
-    }
-
-    // position verlet integration
-    i = -1; while (++i < n) {
-      o = nodes[i];
-      if (o.fixed) {
-        o.x = o.px;
-        o.y = o.py;
-      } else {
-        o.x -= (o.px - (o.px = o.x)) * friction;
-        o.y -= (o.py - (o.py = o.y)) * friction;
-      }
-    }
-
-    event.tick({type: "tick", alpha: alpha});
-
-    // simulated annealing, basically
-    return (alpha *= .99) < .005;
-  }
-
-  force.nodes = function(x) {
-    if (!arguments.length) return nodes;
-    nodes = x;
-    return force;
-  };
-
-  force.links = function(x) {
-    if (!arguments.length) return links;
-    links = x;
-    return force;
-  };
-
-  force.size = function(x) {
-    if (!arguments.length) return size;
-    size = x;
-    return force;
-  };
-
-  force.linkDistance = function(x) {
-    if (!arguments.length) return linkDistance;
-    linkDistance = d3.functor(x);
-    return force;
-  };
-
-  // For backwards-compatibility.
-  force.distance = force.linkDistance;
-
-  force.linkStrength = function(x) {
-    if (!arguments.length) return linkStrength;
-    linkStrength = d3.functor(x);
-    return force;
-  };
-
-  force.friction = function(x) {
-    if (!arguments.length) return friction;
-    friction = x;
-    return force;
-  };
-
-  force.charge = function(x) {
-    if (!arguments.length) return charge;
-    charge = typeof x === "function" ? x : +x;
-    return force;
-  };
-
-  force.gravity = function(x) {
-    if (!arguments.length) return gravity;
-    gravity = x;
-    return force;
-  };
-
-  force.theta = function(x) {
-    if (!arguments.length) return theta;
-    theta = x;
-    return force;
-  };
-
-  force.start = function() {
-    var i,
-        j,
-        n = nodes.length,
-        m = links.length,
-        w = size[0],
-        h = size[1],
-        neighbors,
-        o;
-
-    for (i = 0; i < n; ++i) {
-      (o = nodes[i]).index = i;
-      o.weight = 0;
-    }
-
-    distances = [];
-    strengths = [];
-    for (i = 0; i < m; ++i) {
-      o = links[i];
-      if (typeof o.source == "number") o.source = nodes[o.source];
-      if (typeof o.target == "number") o.target = nodes[o.target];
-      distances[i] = linkDistance.call(this, o, i);
-      strengths[i] = linkStrength.call(this, o, i);
-      ++o.source.weight;
-      ++o.target.weight;
-    }
-
-    for (i = 0; i < n; ++i) {
-      o = nodes[i];
-      if (isNaN(o.x)) o.x = position("x", w);
-      if (isNaN(o.y)) o.y = position("y", h);
-      if (isNaN(o.px)) o.px = o.x;
-      if (isNaN(o.py)) o.py = o.y;
-    }
-
-    charges = [];
-    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;
-      }
-    }
-
-    // initialize node position based on first neighbor
-    function position(dimension, size) {
-      var neighbors = neighbor(i),
-          j = -1,
-          m = neighbors.length,
-          x;
-      while (++j < m) if (!isNaN(x = neighbors[j][dimension])) return x;
-      return Math.random() * size;
-    }
-
-    // initialize neighbors lazily
-    function neighbor() {
-      if (!neighbors) {
-        neighbors = [];
-        for (j = 0; j < n; ++j) {
-          neighbors[j] = [];
-        }
-        for (j = 0; j < m; ++j) {
-          var o = links[j];
-          neighbors[o.source.index].push(o.target);
-          neighbors[o.target.index].push(o.source);
-        }
-      }
-      return neighbors[i];
-    }
-
-    return force.resume();
-  };
-
-  force.resume = function() {
-    alpha = .1;
-    d3.timer(tick);
-    return force;
-  };
-
-  force.stop = function() {
-    alpha = 0;
-    return force;
-  };
-
-  // use `node.call(force.drag)` to make nodes draggable
-  force.drag = function() {
-    if (!drag) drag = d3.behavior.drag()
-        .origin(Object)
-        .on("dragstart", dragstart)
-        .on("drag", d3_layout_forceDrag)
-        .on("dragend", d3_layout_forceDragEnd);
-
-    this.on("mouseover.force", d3_layout_forceDragOver)
-        .on("mouseout.force", d3_layout_forceDragOut)
-        .call(drag);
-  };
-
-  function dragstart(d) {
-    d3_layout_forceDragOver(d3_layout_forceDragNode = d);
-    d3_layout_forceDragForce = force;
-  }
-
-  return d3.rebind(force, event, "on");
-};
-
-var d3_layout_forceDragForce,
-    d3_layout_forceDragNode;
-
-function d3_layout_forceDragOver(d) {
-  d.fixed |= 2;
-}
-
-function d3_layout_forceDragOut(d) {
-  if (d !== d3_layout_forceDragNode) d.fixed &= 1;
-}
-
-function d3_layout_forceDragEnd() {
-  d3_layout_forceDrag();
-  d3_layout_forceDragNode.fixed &= 1;
-  d3_layout_forceDragForce = d3_layout_forceDragNode = null;
-}
-
-function d3_layout_forceDrag() {
-  d3_layout_forceDragNode.px = d3.event.x;
-  d3_layout_forceDragNode.py = d3.event.y;
-  d3_layout_forceDragForce.resume(); // restart annealing
-}
-
-function d3_layout_forceAccumulate(quad, alpha, charges) {
-  var cx = 0,
-      cy = 0;
-  quad.charge = 0;
-  if (!quad.leaf) {
-    var nodes = quad.nodes,
-        n = nodes.length,
-        i = -1,
-        c;
-    while (++i < n) {
-      c = nodes[i];
-      if (c == null) continue;
-      d3_layout_forceAccumulate(c, alpha, charges);
-      quad.charge += c.charge;
-      cx += c.charge * c.cx;
-      cy += c.charge * c.cy;
-    }
-  }
-  if (quad.point) {
-    // jitter internal nodes that are coincident
-    if (!quad.leaf) {
-      quad.point.x += Math.random() - .5;
-      quad.point.y += Math.random() - .5;
-    }
-    var k = alpha * charges[quad.point.index];
-    quad.charge += quad.pointCharge = k;
-    cx += k * quad.point.x;
-    cy += k * quad.point.y;
-  }
-  quad.cx = cx / quad.charge;
-  quad.cy = cy / quad.charge;
-}
-
-function d3_layout_forceLinkDistance(link) {
-  return 20;
-}
-
-function d3_layout_forceLinkStrength(link) {
-  return 1;
-}
-d3.layout.partition = function() {
-  var hierarchy = d3.layout.hierarchy(),
-      size = [1, 1]; // width, height
-
-  function position(node, x, dx, dy) {
-    var children = node.children;
-    node.x = x;
-    node.y = node.depth * dy;
-    node.dx = dx;
-    node.dy = dy;
-    if (children && (n = children.length)) {
-      var i = -1,
-          n,
-          c,
-          d;
-      dx = node.value ? dx / node.value : 0;
-      while (++i < n) {
-        position(c = children[i], x, d = c.value * dx, dy);
-        x += d;
-      }
-    }
-  }
-
-  function depth(node) {
-    var children = node.children,
-        d = 0;
-    if (children && (n = children.length)) {
-      var i = -1,
-          n;
-      while (++i < n) d = Math.max(d, depth(children[i]));
-    }
-    return 1 + d;
-  }
-
-  function partition(d, i) {
-    var nodes = hierarchy.call(this, d, i);
-    position(nodes[0], 0, size[0], size[1] / depth(nodes[0]));
-    return nodes;
-  }
-
-  partition.size = function(x) {
-    if (!arguments.length) return size;
-    size = x;
-    return partition;
-  };
-
-  return d3_layout_hierarchyRebind(partition, hierarchy);
-};
-d3.layout.pie = function() {
-  var value = Number,
-      sort = d3_layout_pieSortByValue,
-      startAngle = 0,
-      endAngle = 2 * Math.PI;
-
-  function pie(data, i) {
-
-    // Compute the numeric values for each data element.
-    var values = data.map(function(d, i) { return +value.call(pie, d, i); });
-
-    // Compute the start angle.
-    var a = +(typeof startAngle === "function"
-        ? startAngle.apply(this, arguments)
-        : startAngle);
-
-    // Compute the angular scale factor: from value to radians.
-    var k = ((typeof endAngle === "function"
-        ? endAngle.apply(this, arguments)
-        : endAngle) - startAngle)
-        / d3.sum(values);
-
-    // Optionally sort the data.
-    var index = d3.range(data.length);
-    if (sort != null) index.sort(sort === d3_layout_pieSortByValue
-        ? function(i, j) { return values[j] - values[i]; }
-        : function(i, j) { return sort(data[i], data[j]); });
-
-    // Compute the arcs!
-    // They are stored in the original data's order.
-    var arcs = [];
-    index.forEach(function(i) {
-      arcs[i] = {
-        data: data[i],
-        value: d = values[i],
-        startAngle: a,
-        endAngle: a += d * k
-      };
-    });
-    return arcs;
-  }
-
-  /**
-   * Specifies the value function *x*, which returns a nonnegative numeric value
-   * for each datum. The default value function is `Number`. The value function
-   * is passed two arguments: the current datum and the current index.
-   */
-  pie.value = function(x) {
-    if (!arguments.length) return value;
-    value = x;
-    return pie;
-  };
-
-  /**
-   * Specifies a sort comparison operator *x*. The comparator is passed two data
-   * elements from the data array, a and b; it returns a negative value if a is
-   * less than b, a positive value if a is greater than b, and zero if a equals
-   * b.
-   */
-  pie.sort = function(x) {
-    if (!arguments.length) return sort;
-    sort = x;
-    return pie;
-  };
-
-  /**
-   * Specifies the overall start angle of the pie chart. Defaults to 0. The
-   * start angle can be specified either as a constant or as a function; in the
-   * case of a function, it is evaluated once per array (as opposed to per
-   * element).
-   */
-  pie.startAngle = function(x) {
-    if (!arguments.length) return startAngle;
-    startAngle = x;
-    return pie;
-  };
-
-  /**
-   * Specifies the overall end angle of the pie chart. Defaults to 2π. The
-   * end angle can be specified either as a constant or as a function; in the
-   * case of a function, it is evaluated once per array (as opposed to per
-   * element).
-   */
-  pie.endAngle = function(x) {
-    if (!arguments.length) return endAngle;
-    endAngle = x;
-    return pie;
-  };
-
-  return pie;
-};
-
-var d3_layout_pieSortByValue = {};
-// data is two-dimensional array of x,y; we populate y0
-d3.layout.stack = function() {
-  var values = Object,
-      order = d3_layout_stackOrders["default"],
-      offset = d3_layout_stackOffsets["zero"],
-      out = d3_layout_stackOut,
-      x = d3_layout_stackX,
-      y = d3_layout_stackY;
-
-  function stack(data, index) {
-
-    // Convert series to canonical two-dimensional representation.
-    var series = data.map(function(d, i) {
-      return values.call(stack, d, i);
-    });
-
-    // Convert each series to canonical [[x,y]] representation.
-    var points = series.map(function(d, i) {
-      return d.map(function(v, i) {
-        return [x.call(stack, v, i), y.call(stack, v, i)];
-      });
-    });
-
-    // Compute the order of series, and permute them.
-    var orders = order.call(stack, points, index);
-    series = d3.permute(series, orders);
-    points = d3.permute(points, orders);
-
-    // Compute the baseline…
-    var offsets = offset.call(stack, points, index);
-
-    // And propagate it to other series.
-    var n = series.length,
-        m = series[0].length,
-        i,
-        j,
-        o;
-    for (j = 0; j < m; ++j) {
-      out.call(stack, series[0][j], o = offsets[j], points[0][j][1]);
-      for (i = 1; i < n; ++i) {
-        out.call(stack, series[i][j], o += points[i - 1][j][1], points[i][j][1]);
-      }
-    }
-
-    return data;
-  }
-
-  stack.values = function(x) {
-    if (!arguments.length) return values;
-    values = x;
-    return stack;
-  };
-
-  stack.order = function(x) {
-    if (!arguments.length) return order;
-    order = typeof x === "function" ? x : d3_layout_stackOrders[x];
-    return stack;
-  };
-
-  stack.offset = function(x) {
-    if (!arguments.length) return offset;
-    offset = typeof x === "function" ? x : d3_layout_stackOffsets[x];
-    return stack;
-  };
-
-  stack.x = function(z) {
-    if (!arguments.length) return x;
-    x = z;
-    return stack;
-  };
-
-  stack.y = function(z) {
-    if (!arguments.length) return y;
-    y = z;
-    return stack;
-  };
-
-  stack.out = function(z) {
-    if (!arguments.length) return out;
-    out = z;
-    return stack;
-  };
-
-  return stack;
-}
-
-function d3_layout_stackX(d) {
-  return d.x;
-}
-
-function d3_layout_stackY(d) {
-  return d.y;
-}
-
-function d3_layout_stackOut(d, y0, y) {
-  d.y0 = y0;
-  d.y = y;
-}
-
-var d3_layout_stackOrders = {
-
-  "inside-out": function(data) {
-    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) { return max[a] - max[b]; }),
-        top = 0,
-        bottom = 0,
-        tops = [],
-        bottoms = [];
-    for (i = 0; i < n; ++i) {
-      j = index[i];
-      if (top < bottom) {
-        top += sums[j];
-        tops.push(j);
-      } else {
-        bottom += sums[j];
-        bottoms.push(j);
-      }
-    }
-    return bottoms.reverse().concat(tops);
-  },
-
-  "reverse": function(data) {
-    return d3.range(data.length).reverse();
-  },
-
-  "default": function(data) {
-    return d3.range(data.length);
-  }
-
-};
-
-var d3_layout_stackOffsets = {
-
-  "silhouette": function(data) {
-    var n = data.length,
-        m = data[0].length,
-        sums = [],
-        max = 0,
-        i,
-        j,
-        o,
-        y0 = [];
-    for (j = 0; j < m; ++j) {
-      for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
-      if (o > max) max = o;
-      sums.push(o);
-    }
-    for (j = 0; j < m; ++j) {
-      y0[j] = (max - sums[j]) / 2;
-    }
-    return y0;
-  },
-
-  "wiggle": function(data) {
-    var n = data.length,
-        x = data[0],
-        m = x.length,
-        max = 0,
-        i,
-        j,
-        k,
-        s1,
-        s2,
-        s3,
-        dx,
-        o,
-        o0,
-        y0 = [];
-    y0[0] = o = o0 = 0;
-    for (j = 1; j < m; ++j) {
-      for (i = 0, s1 = 0; i < n; ++i) s1 += data[i][j][1];
-      for (i = 0, s2 = 0, dx = x[j][0] - x[j - 1][0]; i < n; ++i) {
-        for (k = 0, s3 = (data[i][j][1] - data[i][j - 1][1]) / (2 * dx); k < i; ++k) {
-          s3 += (data[k][j][1] - data[k][j - 1][1]) / dx;
-        }
-        s2 += s3 * data[i][j][1];
-      }
-      y0[j] = o -= s1 ? s2 / s1 * dx : 0;
-      if (o < o0) o0 = o;
-    }
-    for (j = 0; j < m; ++j) y0[j] -= o0;
-    return y0;
-  },
-
-  "expand": function(data) {
-    var n = data.length,
-        m = data[0].length,
-        k = 1 / n,
-        i,
-        j,
-        o,
-        y0 = [];
-    for (j = 0; j < m; ++j) {
-      for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
-      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;
-    }
-    for (j = 0; j < m; ++j) y0[j] = 0;
-    return y0;
-  },
-
-  "zero": function(data) {
-    var j = -1,
-        m = data[0].length,
-        y0 = [];
-    while (++j < m) y0[j] = 0;
-    return y0;
-  }
-
-};
-
-function d3_layout_stackMaxIndex(array) {
-  var i = 1,
-      j = 0,
-      v = array[0][1],
-      k,
-      n = array.length;
-  for (; i < n; ++i) {
-    if ((k = array[i][1]) > v) {
-      j = i;
-      v = k;
-    }
-  }
-  return j;
-}
-
-function d3_layout_stackReduceSum(d) {
-  return d.reduce(d3_layout_stackSum, 0);
-}
-
-function d3_layout_stackSum(p, d) {
-  return p + d[1];
-}
-d3.layout.histogram = function() {
-  var frequency = true,
-      valuer = Number,
-      ranger = d3_layout_histogramRange,
-      binner = d3_layout_histogramBinSturges;
-
-  function histogram(data, i) {
-    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;
-
-    // Initialize the bins.
-    while (++i < m) {
-      bin = bins[i] = [];
-      bin.dx = thresholds[i + 1] - (bin.x = thresholds[i]);
-      bin.y = 0;
-    }
-
-    // Fill the bins, ignoring values outside the range.
-    i = -1; while(++i < n) {
-      x = values[i];
-      if ((x >= range[0]) && (x <= range[1])) {
-        bin = bins[d3.bisect(thresholds, x, 1, m) - 1];
-        bin.y += k;
-        bin.push(data[i]);
-      }
-    }
-
-    return bins;
-  }
-
-  // Specifies how to extract a value from the associated data. The default
-  // value function is `Number`, which is equivalent to the identity function.
-  histogram.value = function(x) {
-    if (!arguments.length) return valuer;
-    valuer = x;
-    return histogram;
-  };
-
-  // Specifies the range of the histogram. Values outside the specified range
-  // will be ignored. The argument `x` may be specified either as a two-element
-  // array representing the minimum and maximum value of the range, or as a
-  // function that returns the range given the array of values and the current
-  // index `i`. The default range is the extent (minimum and maximum) of the
-  // values.
-  histogram.range = function(x) {
-    if (!arguments.length) return ranger;
-    ranger = d3.functor(x);
-    return histogram;
-  };
-
-  // Specifies how to bin values in the histogram. The argument `x` may be
-  // specified as a number, in which case the range of values will be split
-  // uniformly into the given number of bins. Or, `x` may be an array of
-  // threshold values, defining the bins; the specified array must contain the
-  // rightmost (upper) value, thus specifying n + 1 values for n bins. Or, `x`
-  // may be a function which is evaluated, being passed the range, the array of
-  // values, and the current index `i`, returning an array of thresholds. The
-  // default bin function will divide the values into uniform bins using
-  // Sturges' formula.
-  histogram.bins = function(x) {
-    if (!arguments.length) return binner;
-    binner = typeof x === "number"
-        ? function(range) { return d3_layout_histogramBinFixed(range, x); }
-        : d3.functor(x);
-    return histogram;
-  };
-
-  // Specifies whether the histogram's `y` value is a count (frequency) or a
-  // probability (density). The default value is true.
-  histogram.frequency = function(x) {
-    if (!arguments.length) return frequency;
-    frequency = !!x;
-    return histogram;
-  };
-
-  return histogram;
-};
-
-function d3_layout_histogramBinSturges(range, values) {
-  return d3_layout_histogramBinFixed(range, Math.ceil(Math.log(values.length) / Math.LN2 + 1));
-}
-
-function d3_layout_histogramBinFixed(range, n) {
-  var x = -1,
-      b = +range[0],
-      m = (range[1] - b) / n,
-      f = [];
-  while (++x <= n) f[x] = m * x + b;
-  return f;
-}
-
-function d3_layout_histogramRange(values) {
-  return [d3.min(values), d3.max(values)];
-}
-d3.layout.hierarchy = function() {
-  var sort = d3_layout_hierarchySort,
-      children = d3_layout_hierarchyChildren,
-      value = d3_layout_hierarchyValue;
-
-  // Recursively compute the node depth and value.
-  // Also converts the data representation into a standard hierarchy structure.
-  function recurse(data, depth, nodes) {
-    var childs = children.call(hierarchy, data, depth),
-        node = d3_layout_hierarchyInline ? data : {data: data};
-    node.depth = depth;
-    nodes.push(node);
-    if (childs && (n = childs.length)) {
-      var i = -1,
-          n,
-          c = node.children = [],
-          v = 0,
-          j = depth + 1;
-      while (++i < n) {
-        d = recurse(childs[i], j, nodes);
-        d.parent = node;
-        c.push(d);
-        v += d.value;
-      }
-      if (sort) c.sort(sort);
-      if (value) node.value = v;
-    } else if (value) {
-      node.value = +value.call(hierarchy, data, depth) || 0;
-    }
-    return node;
-  }
-
-  // Recursively re-evaluates the node value.
-  function revalue(node, depth) {
-    var children = node.children,
-        v = 0;
-    if (children && (n = children.length)) {
-      var i = -1,
-          n,
-          j = depth + 1;
-      while (++i < n) v += revalue(children[i], j);
-    } else if (value) {
-      v = +value.call(hierarchy, d3_layout_hierarchyInline ? node : node.data, depth) || 0;
-    }
-    if (value) node.value = v;
-    return v;
-  }
-
-  function hierarchy(d) {
-    var nodes = [];
-    recurse(d, 0, nodes);
-    return nodes;
-  }
-
-  hierarchy.sort = function(x) {
-    if (!arguments.length) return sort;
-    sort = x;
-    return hierarchy;
-  };
-
-  hierarchy.children = function(x) {
-    if (!arguments.length) return children;
-    children = x;
-    return hierarchy;
-  };
-
-  hierarchy.value = function(x) {
-    if (!arguments.length) return value;
-    value = x;
-    return hierarchy;
-  };
-
-  // Re-evaluates the `value` property for the specified hierarchy.
-  hierarchy.revalue = function(root) {
-    revalue(root, 0);
-    return root;
-  };
-
-  return hierarchy;
-};
-
-// A method assignment helper for hierarchy subclasses.
-function d3_layout_hierarchyRebind(object, hierarchy) {
-  d3.rebind(object, hierarchy, "sort", "children", "value");
-
-  // Add an alias for links, for convenience.
-  object.links = d3_layout_hierarchyLinks;
-
-  // If the new API is used, enabling inlining.
-  object.nodes = function(d) {
-    d3_layout_hierarchyInline = true;
-    return (object.nodes = object)(d);
-  };
-
-  return object;
-}
-
-function d3_layout_hierarchyChildren(d) {
-  return d.children;
-}
-
-function d3_layout_hierarchyValue(d) {
-  return d.value;
-}
-
-function d3_layout_hierarchySort(a, b) {
-  return b.value - a.value;
-}
-
-// Returns an array source+target objects for the specified nodes.
-function d3_layout_hierarchyLinks(nodes) {
-  return d3.merge(nodes.map(function(parent) {
-    return (parent.children || []).map(function(child) {
-      return {source: parent, target: child};
-    });
-  }));
-}
-
-// For backwards-compatibility, don't enable inlining by default.
-var d3_layout_hierarchyInline = false;
-d3.layout.pack = function() {
-  var hierarchy = d3.layout.hierarchy().sort(d3_layout_packSort),
-      size = [1, 1];
-
-  function pack(d, i) {
-    var nodes = hierarchy.call(this, d, i),
-        root = nodes[0];
-
-    // Recursively compute the layout.
-    root.x = 0;
-    root.y = 0;
-    d3_layout_packTree(root);
-
-    // Scale the layout to fit the requested size.
-    var w = size[0],
-        h = size[1],
-        k = 1 / Math.max(2 * root.r / w, 2 * root.r / h);
-    d3_layout_packTransform(root, w / 2, h / 2, k);
-
-    return nodes;
-  }
-
-  pack.size = function(x) {
-    if (!arguments.length) return size;
-    size = x;
-    return pack;
-  };
-
-  return d3_layout_hierarchyRebind(pack, hierarchy);
-};
-
-function d3_layout_packSort(a, b) {
-  return a.value - b.value;
-}
-
-function d3_layout_packInsert(a, b) {
-  var c = a._pack_next;
-  a._pack_next = b;
-  b._pack_prev = a;
-  b._pack_next = c;
-  c._pack_prev = b;
-}
-
-function d3_layout_packSplice(a, b) {
-  a._pack_next = b;
-  b._pack_prev = a;
-}
-
-function d3_layout_packIntersects(a, b) {
-  var dx = b.x - a.x,
-      dy = b.y - a.y,
-      dr = a.r + b.r;
-  return dr * dr - dx * dx - dy * dy > .001; // within epsilon
-}
-
-function d3_layout_packCircle(nodes) {
-  var xMin = Infinity,
-      xMax = -Infinity,
-      yMin = Infinity,
-      yMax = -Infinity,
-      n = nodes.length,
-      a, b, c, j, k;
-
-  function bound(node) {
-    xMin = Math.min(node.x - node.r, xMin);
-    xMax = Math.max(node.x + node.r, xMax);
-    yMin = Math.min(node.y - node.r, yMin);
-    yMax = Math.max(node.y + node.r, yMax);
-  }
-
-  // Create node links.
-  nodes.forEach(d3_layout_packLink);
-
-  // Create first node.
-  a = nodes[0];
-  a.x = -a.r;
-  a.y = 0;
-  bound(a);
-
-  // Create second node.
-  if (n > 1) {
-    b = nodes[1];
-    b.x = b.r;
-    b.y = 0;
-    bound(b);
-
-    // Create third node and build chain.
-    if (n > 2) {
-      c = nodes[2];
-      d3_layout_packPlace(a, b, c);
-      bound(c);
-      d3_layout_packInsert(a, c);
-      a._pack_prev = c;
-      d3_layout_packInsert(c, b);
-      b = a._pack_next;
-
-      // Now iterate through the rest.
-      for (var i = 3; i < n; i++) {
-        d3_layout_packPlace(a, b, c = nodes[i]);
-
-        // Search for the closest intersection.
-        var isect = 0, s1 = 1, s2 = 1;
-        for (j = b._pack_next; j !== b; j = j._pack_next, s1++) {
-          if (d3_layout_packIntersects(j, c)) {
-            isect = 1;
-            break;
-          }
-        }
-        if (isect == 1) {
-          for (k = a._pack_prev; k !== j._pack_prev; k = k._pack_prev, s2++) {
-            if (d3_layout_packIntersects(k, c)) {
-              break;
-            }
-          }
-        }
-
-        // Update node chain.
-        if (isect) {
-          if (s1 < s2 || (s1 == s2 && b.r < a.r)) d3_layout_packSplice(a, b = j);
-          else d3_layout_packSplice(a = k, b);
-          i--;
-        } else {
-          d3_layout_packInsert(a, c);
-          b = c;
-          bound(c);
-        }
-      }
-    }
-  }
-
-  // Re-center the circles and return the encompassing radius.
-  var cx = (xMin + xMax) / 2,
-      cy = (yMin + yMax) / 2,
-      cr = 0;
-  for (var i = 0; i < n; i++) {
-    var node = nodes[i];
-    node.x -= cx;
-    node.y -= cy;
-    cr = Math.max(cr, node.r + Math.sqrt(node.x * node.x + node.y * node.y));
-  }
-
-  // Remove node links.
-  nodes.forEach(d3_layout_packUnlink);
-
-  return cr;
-}
-
-function d3_layout_packLink(node) {
-  node._pack_next = node._pack_prev = node;
-}
-
-function d3_layout_packUnlink(node) {
-  delete node._pack_next;
-  delete node._pack_prev;
-}
-
-function d3_layout_packTree(node) {
-  var children = node.children;
-  if (children && children.length) {
-    children.forEach(d3_layout_packTree);
-    node.r = d3_layout_packCircle(children);
-  } else {
-    node.r = Math.sqrt(node.value);
-  }
-}
-
-function d3_layout_packTransform(node, x, y, k) {
-  var children = node.children;
-  node.x = (x += k * node.x);
-  node.y = (y += k * node.y);
-  node.r *= k;
-  if (children) {
-    var i = -1, n = children.length;
-    while (++i < n) d3_layout_packTransform(children[i], x, y, k);
-  }
-}
-
-function d3_layout_packPlace(a, b, c) {
-  var db = a.r + c.r,
-      dx = b.x - a.x,
-      dy = b.y - a.y;
-  if (db && (dx || dy)) {
-    var da = b.r + c.r,
-        dc = Math.sqrt(dx * dx + dy * dy),
-        cos = Math.max(-1, Math.min(1, (db * db + dc * dc - da * da) / (2 * db * dc))),
-        theta = Math.acos(cos),
-        x = cos * (db /= dc),
-        y = Math.sin(theta) * db;
-    c.x = a.x + x * dx + y * dy;
-    c.y = a.y + x * dy - y * dx;
-  } else {
-    c.x = a.x + db;
-    c.y = a.y;
-  }
-}
-// Implements a hierarchical layout using the cluster (or dendogram) algorithm.
-d3.layout.cluster = function() {
-  var hierarchy = d3.layout.hierarchy().sort(null).value(null),
-      separation = d3_layout_treeSeparation,
-      size = [1, 1]; // width, height
-
-  function cluster(d, i) {
-    var nodes = hierarchy.call(this, d, i),
-        root = nodes[0],
-        previousNode,
-        x = 0,
-        kx,
-        ky;
-
-    // First walk, computing the initial x & y values.
-    d3_layout_treeVisitAfter(root, function(node) {
-      var children = node.children;
-      if (children && children.length) {
-        node.x = d3_layout_clusterX(children);
-        node.y = d3_layout_clusterY(children);
-      } else {
-        node.x = previousNode ? x += separation(node, previousNode) : 0;
-        node.y = 0;
-        previousNode = node;
-      }
-    });
-
-    // Compute the left-most, right-most, and depth-most nodes for extents.
-    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;
-
-    // Second walk, normalizing x & y to the desired size.
-    d3_layout_treeVisitAfter(root, function(node) {
-      node.x = (node.x - x0) / (x1 - x0) * size[0];
-      node.y = (1 - (root.y ? node.y / root.y : 1)) * size[1];
-    });
-
-    return nodes;
-  }
-
-  cluster.separation = function(x) {
-    if (!arguments.length) return separation;
-    separation = x;
-    return cluster;
-  };
-
-  cluster.size = function(x) {
-    if (!arguments.length) return size;
-    size = x;
-    return cluster;
-  };
-
-  return d3_layout_hierarchyRebind(cluster, hierarchy);
-};
-
-function d3_layout_clusterY(children) {
-  return 1 + d3.max(children, function(child) {
-    return child.y;
-  });
-}
-
-function d3_layout_clusterX(children) {
-  return children.reduce(function(x, child) {
-    return x + child.x;
-  }, 0) / children.length;
-}
-
-function d3_layout_clusterLeft(node) {
-  var children = node.children;
-  return children && children.length ? d3_layout_clusterLeft(children[0]) : node;
-}
-
-function d3_layout_clusterRight(node) {
-  var children = node.children, n;
-  return children && (n = children.length) ? d3_layout_clusterRight(children[n - 1]) : node;
-}
-// Node-link tree diagram using the Reingold-Tilford "tidy" algorithm
-d3.layout.tree = function() {
-  var hierarchy = d3.layout.hierarchy().sort(null).value(null),
-      separation = d3_layout_treeSeparation,
-      size = [1, 1]; // width, height
-
-  function tree(d, i) {
-    var nodes = hierarchy.call(this, d, i),
-        root = nodes[0];
-
-    function firstWalk(node, previousSibling) {
-      var children = node.children,
-          layout = node._tree;
-      if (children && (n = children.length)) {
-        var n,
-            firstChild = children[0],
-            previousChild,
-            ancestor = firstChild,
-            child,
-            i = -1;
-        while (++i < n) {
-          child = children[i];
-          firstWalk(child, previousChild);
-          ancestor = apportion(child, previousChild, ancestor);
-          previousChild = child;
-        }
-        d3_layout_treeShift(node);
-        var midpoint = .5 * (firstChild._tree.prelim + child._tree.prelim);
-        if (previousSibling) {
-          layout.prelim = previousSibling._tree.prelim + separation(node, previousSibling);
-          layout.mod = layout.prelim - midpoint;
-        } else {
-          layout.prelim = midpoint;
-        }
-      } else {
-        if (previousSibling) {
-          layout.prelim = previousSibling._tree.prelim + separation(node, previousSibling);
-        }
-      }
-    }
-
-    function secondWalk(node, x) {
-      node.x = node._tree.prelim + x;
-      var children = node.children;
-      if (children && (n = children.length)) {
-        var i = -1,
-            n;
-        x += node._tree.mod;
-        while (++i < n) {
-          secondWalk(children[i], x);
-        }
-      }
-    }
-
-    function apportion(node, previousSibling, ancestor) {
-      if (previousSibling) {
-        var vip = node,
-            vop = node,
-            vim = previousSibling,
-            vom = node.parent.children[0],
-            sip = vip._tree.mod,
-            sop = vop._tree.mod,
-            sim = vim._tree.mod,
-            som = vom._tree.mod,
-            shift;
-        while (vim = d3_layout_treeRight(vim), vip = d3_layout_treeLeft(vip), vim && vip) {
-          vom = d3_layout_treeLeft(vom);
-          vop = d3_layout_treeRight(vop);
-          vop._tree.ancestor = node;
-          shift = vim._tree.prelim + sim - vip._tree.prelim - sip + separation(vim, vip);
-          if (shift > 0) {
-            d3_layout_treeMove(d3_layout_treeAncestor(vim, node, ancestor), node, shift);
-            sip += shift;
-            sop += shift;
-          }
-          sim += vim._tree.mod;
-          sip += vip._tree.mod;
-          som += vom._tree.mod;
-          sop += vop._tree.mod;
-        }
-        if (vim && !d3_layout_treeRight(vop)) {
-          vop._tree.thread = vim;
-          vop._tree.mod += sim - sop;
-        }
-        if (vip && !d3_layout_treeLeft(vom)) {
-          vom._tree.thread = vip;
-          vom._tree.mod += sip - som;
-          ancestor = node;
-        }
-      }
-      return ancestor;
-    }
-
-    // Initialize temporary layout variables.
-    d3_layout_treeVisitAfter(root, function(node, previousSibling) {
-      node._tree = {
-        ancestor: node,
-        prelim: 0,
-        mod: 0,
-        change: 0,
-        shift: 0,
-        number: previousSibling ? previousSibling._tree.number + 1 : 0
-      };
-    });
-
-    // Compute the layout using Buchheim et al.'s algorithm.
-    firstWalk(root);
-    secondWalk(root, -root._tree.prelim);
-
-    // Compute the left-most, right-most, and depth-most nodes for extents.
-    var left = d3_layout_treeSearch(root, d3_layout_treeLeftmost),
-        right = d3_layout_treeSearch(root, d3_layout_treeRightmost),
-        deep = d3_layout_treeSearch(root, d3_layout_treeDeepest),
-        x0 = left.x - separation(left, right) / 2,
-        x1 = right.x + separation(right, left) / 2,
-        y1 = deep.depth || 1;
-
-    // Clear temporary layout variables; transform x and y.
-    d3_layout_treeVisitAfter(root, function(node) {
-      node.x = (node.x - x0) / (x1 - x0) * size[0];
-      node.y = node.depth / y1 * size[1];
-      delete node._tree;
-    });
-
-    return nodes;
-  }
-
-  tree.separation = function(x) {
-    if (!arguments.length) return separation;
-    separation = x;
-    return tree;
-  };
-
-  tree.size = function(x) {
-    if (!arguments.length) return size;
-    size = x;
-    return tree;
-  };
-
-  return d3_layout_hierarchyRebind(tree, hierarchy);
-};
-
-function d3_layout_treeSeparation(a, b) {
-  return a.parent == b.parent ? 1 : 2;
-}
-
-// function d3_layout_treeSeparationRadial(a, b) {
-//   return (a.parent == b.parent ? 1 : 2) / a.depth;
-// }
-
-function d3_layout_treeLeft(node) {
-  var children = node.children;
-  return children && children.length ? children[0] : node._tree.thread;
-}
-
-function d3_layout_treeRight(node) {
-  var children = node.children,
-      n;
-  return children && (n = children.length) ? children[n - 1] : node._tree.thread;
-}
-
-function d3_layout_treeSearch(node, compare) {
-  var children = node.children;
-  if (children && (n = children.length)) {
-    var child,
-        n,
-        i = -1;
-    while (++i < n) {
-      if (compare(child = d3_layout_treeSearch(children[i], compare), node) > 0) {
-        node = child;
-      }
-    }
-  }
-  return node;
-}
-
-function d3_layout_treeRightmost(a, b) {
-  return a.x - b.x;
-}
-
-function d3_layout_treeLeftmost(a, b) {
-  return b.x - a.x;
-}
-
-function d3_layout_treeDeepest(a, b) {
-  return a.depth - b.depth;
-}
-
-function d3_layout_treeVisitAfter(node, callback) {
-  function visit(node, previousSibling) {
-    var children = node.children;
-    if (children && (n = children.length)) {
-      var child,
-          previousChild = null,
-          i = -1,
-          n;
-      while (++i < n) {
-        child = children[i];
-        visit(child, previousChild);
-        previousChild = child;
-      }
-    }
-    callback(node, previousSibling);
-  }
-  visit(node, null);
-}
-
-function d3_layout_treeShift(node) {
-  var shift = 0,
-      change = 0,
-      children = node.children,
-      i = children.length,
-      child;
-  while (--i >= 0) {
-    child = children[i]._tree;
-    child.prelim += shift;
-    child.mod += shift;
-    shift += child.shift + (change += child.change);
-  }
-}
-
-function d3_layout_treeMove(ancestor, node, shift) {
-  ancestor = ancestor._tree;
-  node = node._tree;
-  var change = shift / (node.number - ancestor.number);
-  ancestor.change += change;
-  node.change -= change;
-  node.shift += shift;
-  node.prelim += shift;
-  node.mod += shift;
-}
-
-function d3_layout_treeAncestor(vim, node, ancestor) {
-  return vim._tree.ancestor.parent == node.parent
-      ? vim._tree.ancestor
-      : ancestor;
-}
-// Squarified Treemaps by Mark Bruls, Kees Huizing, and Jarke J. van Wijk
-// Modified to support a target aspect ratio by Jeff Heer
-d3.layout.treemap = function() {
-  var hierarchy = d3.layout.hierarchy(),
-      round = Math.round,
-      size = [1, 1], // width, height
-      padding = null,
-      pad = d3_layout_treemapPadNull,
-      sticky = false,
-      stickies,
-      ratio = 0.5 * (1 + Math.sqrt(5)); // golden ratio
-
-  // Compute the area for each child based on value & scale.
-  function scale(children, k) {
-    var i = -1,
-        n = children.length,
-        child,
-        area;
-    while (++i < n) {
-      area = (child = children[i]).value * (k < 0 ? 0 : k);
-      child.area = isNaN(area) || area <= 0 ? 0 : area;
-    }
-  }
-
-  // Recursively arranges the specified node's children into squarified rows.
-  function squarify(node) {
-    var children = node.children;
-    if (children && children.length) {
-      var rect = pad(node),
-          row = [],
-          remaining = children.slice(), // copy-on-write
-          child,
-          best = Infinity, // the best row score so far
-          score, // the current row score
-          u = Math.min(rect.dx, rect.dy), // initial orientation
-          n;
-      scale(remaining, rect.dx * rect.dy / node.value);
-      row.area = 0;
-      while ((n = remaining.length) > 0) {
-        row.push(child = remaining[n - 1]);
-        row.area += child.area;
-        if ((score = worst(row, u)) <= best) { // continue with this orientation
-          remaining.pop();
-          best = score;
-        } else { // abort, and try a different orientation
-          row.area -= row.pop().area;
-          position(row, u, rect, false);
-          u = Math.min(rect.dx, rect.dy);
-          row.length = row.area = 0;
-          best = Infinity;
-        }
-      }
-      if (row.length) {
-        position(row, u, rect, true);
-        row.length = row.area = 0;
-      }
-      children.forEach(squarify);
-    }
-  }
-
-  // Recursively resizes the specified node's children into existing rows.
-  // Preserves the existing layout!
-  function stickify(node) {
-    var children = node.children;
-    if (children && children.length) {
-      var rect = pad(node),
-          remaining = children.slice(), // copy-on-write
-          child,
-          row = [];
-      scale(remaining, rect.dx * rect.dy / node.value);
-      row.area = 0;
-      while (child = remaining.pop()) {
-        row.push(child);
-        row.area += child.area;
-        if (child.z != null) {
-          position(row, child.z ? rect.dx : rect.dy, rect, !remaining.length);
-          row.length = row.area = 0;
-        }
-      }
-      children.forEach(stickify);
-    }
-  }
-
-  // Computes the score for the specified row, as the worst aspect ratio.
-  function worst(row, u) {
-    var s = row.area,
-        r,
-        rmax = 0,
-        rmin = Infinity,
-        i = -1,
-        n = row.length;
-    while (++i < n) {
-      if (!(r = row[i].area)) continue;
-      if (r < rmin) rmin = r;
-      if (r > rmax) rmax = r;
-    }
-    s *= s;
-    u *= u;
-    return s
-        ? Math.max((u * rmax * ratio) / s, s / (u * rmin * ratio))
-        : Infinity;
-  }
-
-  // Positions the specified row of nodes. Modifies `rect`.
-  function position(row, u, rect, flush) {
-    var i = -1,
-        n = row.length,
-        x = rect.x,
-        y = rect.y,
-        v = u ? round(row.area / u) : 0,
-        o;
-    if (u == rect.dx) { // horizontal subdivision
-      if (flush || v > rect.dy) v = v ? rect.dy : 0; // over+underflow
-      while (++i < n) {
-        o = row[i];
-        o.x = x;
-        o.y = y;
-        o.dy = v;
-        x += o.dx = v ? round(o.area / v) : 0;
-      }
-      o.z = true;
-      o.dx += rect.x + rect.dx - x; // rounding error
-      rect.y += v;
-      rect.dy -= v;
-    } else { // vertical subdivision
-      if (flush || v > rect.dx) v = v ? rect.dx : 0; // over+underflow
-      while (++i < n) {
-        o = row[i];
-        o.x = x;
-        o.y = y;
-        o.dx = v;
-        y += o.dy = v ? round(o.area / v) : 0;
-      }
-      o.z = false;
-      o.dy += rect.y + rect.dy - y; // rounding error
-      rect.x += v;
-      rect.dx -= v;
-    }
-  }
-
-  function treemap(d) {
-    var nodes = stickies || hierarchy(d),
-        root = nodes[0];
-    root.x = 0;
-    root.y = 0;
-    root.dx = size[0];
-    root.dy = size[1];
-    if (stickies) hierarchy.revalue(root);
-    scale([root], root.dx * root.dy / root.value);
-    (stickies ? stickify : squarify)(root);
-    if (sticky) stickies = nodes;
-    return nodes;
-  }
-
-  treemap.size = function(x) {
-    if (!arguments.length) return size;
-    size = x;
-    return treemap;
-  };
-
-  treemap.padding = function(x) {
-    if (!arguments.length) return padding;
-
-    function padFunction(node) {
-      var p = x.call(treemap, node, node.depth);
-      return p == null
-          ? d3_layout_treemapPadNull(node)
-          : d3_layout_treemapPad(node, typeof p === "number" ? [p, p, p, p] : p);
-    }
-
-    function padConstant(node) {
-      return d3_layout_treemapPad(node, x);
-    }
-
-    var type;
-    pad = (padding = x) == null ? d3_layout_treemapPadNull
-        : (type = typeof x) === "function" ? padFunction
-        : type === "number" ? (x = [x, x, x, x], padConstant)
-        : padConstant;
-    return treemap;
-  };
-
-  treemap.round = function(x) {
-    if (!arguments.length) return round != Number;
-    round = x ? Math.round : Number;
-    return treemap;
-  };
-
-  treemap.sticky = function(x) {
-    if (!arguments.length) return sticky;
-    sticky = x;
-    stickies = null;
-    return treemap;
-  };
-
-  treemap.ratio = function(x) {
-    if (!arguments.length) return ratio;
-    ratio = x;
-    return treemap;
-  };
-
-  return d3_layout_hierarchyRebind(treemap, hierarchy);
-};
-
-function d3_layout_treemapPadNull(node) {
-  return {x: node.x, y: node.y, dx: node.dx, dy: node.dy};
-}
-
-function d3_layout_treemapPad(node, padding) {
-  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];
-  if (dx < 0) { x += dx / 2; dx = 0; }
-  if (dy < 0) { y += dy / 2; dy = 0; }
-  return {x: x, y: y, dx: dx, dy: dy};
-}
-})();