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@saraquigley /Readme.md
Last active Aug 29, 2015

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major migration #2
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Readme.md

This is a fork of timelyportfolio’s gist, which timelyportfolio had forked from d3noob's example to allow a csv as the data source... Awesome work by those guys!

Still a long way to go, but this is a great start!

Raw
idg.csv
source target value
iClg of Chemistry dClg of Chemistry 247
iClg of Engineering dClg of Chemistry 1
iClg of Engineering dClg of Engineering 757
iClg of Env Design dClg of Env Design 219
iClg of Natural Resources dClg of Chemistry 2
iClg of Natural Resources dClg of Engineering 4
iClg of Natural Resources dClg of Env Design 2
iClg of Natural Resources dClg of Natural Resources 388
iClg of Natural Resources dHaas School of Business 1
iClg of Natural Resources dL&S-Administered Programs 5
iClg of Natural Resources dL&S-Arts & Humanities Div 7
iClg of Natural Resources dL&S-Bio Sciences Div 9
iClg of Natural Resources dL&S-Math & Phys Sci Div 1
iClg of Natural Resources dL&S-Social Sciences Div 29
iClg of Natural Resources dL&S-Undergraduate Div 12
iClg of Natural Resources dNA 7
iClg of Natural Resources dOther EVCP Programs 5
iHaas School of Business dHaas School of Business 100
iL&S-Administered Programs dClg of Chemistry 10
iL&S-Administered Programs dClg of Engineering 4
iL&S-Administered Programs dClg of Env Design 1
iL&S-Administered Programs dClg of Natural Resources 5
iL&S-Administered Programs dHaas School of Business 2
iL&S-Administered Programs dL&S-Administered Programs 102
iL&S-Administered Programs dL&S-Arts & Humanities Div 15
iL&S-Administered Programs dL&S-Bio Sciences Div 11
iL&S-Administered Programs dL&S-Math & Phys Sci Div 13
iL&S-Administered Programs dL&S-Social Sciences Div 29
iL&S-Administered Programs dL&S-Undergraduate Div 12
iL&S-Administered Programs dNA 13
iL&S-Administered Programs dOther EVCP Programs 18
iL&S-Arts & Humanities Div dClg of Env Design 2
iL&S-Arts & Humanities Div dClg of Natural Resources 6
iL&S-Arts & Humanities Div dHaas School of Business 4
iL&S-Arts & Humanities Div dL&S-Administered Programs 27
iL&S-Arts & Humanities Div dL&S-Arts & Humanities Div 516
iL&S-Arts & Humanities Div dL&S-Bio Sciences Div 8
iL&S-Arts & Humanities Div dL&S-Math & Phys Sci Div 3
iL&S-Arts & Humanities Div dL&S-Social Sciences Div 107
iL&S-Arts & Humanities Div dL&S-Undergraduate Div 65
iL&S-Arts & Humanities Div dNA 27
iL&S-Arts & Humanities Div dOther EVCP Programs 39
iL&S-Bio Sciences Div dClg of Chemistry 9
iL&S-Bio Sciences Div dClg of Engineering 10
iL&S-Bio Sciences Div dClg of Natural Resources 28
iL&S-Bio Sciences Div dHaas School of Business 10
iL&S-Bio Sciences Div dL&S-Administered Programs 80
iL&S-Bio Sciences Div dL&S-Arts & Humanities Div 47
iL&S-Bio Sciences Div dL&S-Bio Sciences Div 390
iL&S-Bio Sciences Div dL&S-Math & Phys Sci Div 11
iL&S-Bio Sciences Div dL&S-Social Sciences Div 75
iL&S-Bio Sciences Div dL&S-Undergraduate Div 19
iL&S-Bio Sciences Div dNA 14
iL&S-Bio Sciences Div dOther EVCP Programs 75
iL&S-Math & Phys Sci Div dClg of Chemistry 1
iL&S-Math & Phys Sci Div dClg of Engineering 9
iL&S-Math & Phys Sci Div dClg of Env Design 3
iL&S-Math & Phys Sci Div dClg of Natural Resources 7
iL&S-Math & Phys Sci Div dHaas School of Business 1
iL&S-Math & Phys Sci Div dL&S-Administered Programs 28
iL&S-Math & Phys Sci Div dL&S-Arts & Humanities Div 17
iL&S-Math & Phys Sci Div dL&S-Bio Sciences Div 10
iL&S-Math & Phys Sci Div dL&S-Math & Phys Sci Div 197
iL&S-Math & Phys Sci Div dL&S-Social Sciences Div 47
iL&S-Math & Phys Sci Div dL&S-Undergraduate Div 12
iL&S-Math & Phys Sci Div dNA 18
iL&S-Math & Phys Sci Div dOther EVCP Programs 42
iL&S-Social Sciences Div dClg of Chemistry 1
iL&S-Social Sciences Div dClg of Engineering 2
iL&S-Social Sciences Div dClg of Env Design 4
iL&S-Social Sciences Div dClg of Natural Resources 12
iL&S-Social Sciences Div dHaas School of Business 25
iL&S-Social Sciences Div dL&S-Administered Programs 81
iL&S-Social Sciences Div dL&S-Arts & Humanities Div 73
iL&S-Social Sciences Div dL&S-Bio Sciences Div 15
iL&S-Social Sciences Div dL&S-Math & Phys Sci Div 8
iL&S-Social Sciences Div dL&S-Social Sciences Div 738
iL&S-Social Sciences Div dL&S-Undergraduate Div 109
iL&S-Social Sciences Div dNA 18
iL&S-Social Sciences Div dOther EVCP Programs 39
iL&S-Undeclared dClg of Chemistry 12
iL&S-Undeclared dClg of Engineering 15
iL&S-Undeclared dClg of Env Design 14
iL&S-Undeclared dClg of Natural Resources 34
iL&S-Undeclared dHaas School of Business 118
iL&S-Undeclared dL&S-Administered Programs 192
iL&S-Undeclared dL&S-Arts & Humanities Div 161
iL&S-Undeclared dL&S-Bio Sciences Div 155
iL&S-Undeclared dL&S-Math & Phys Sci Div 41
iL&S-Undeclared dL&S-Social Sciences Div 447
iL&S-Undeclared dL&S-Undergraduate Div 275
iL&S-Undeclared dNA 60
iL&S-Undeclared dOther EVCP Programs 159
iL&S-Undergraduate Div dClg of Engineering 1
iL&S-Undergraduate Div dClg of Natural Resources 4
iL&S-Undergraduate Div dHaas School of Business 2
iL&S-Undergraduate Div dL&S-Administered Programs 22
iL&S-Undergraduate Div dL&S-Arts & Humanities Div 28
iL&S-Undergraduate Div dL&S-Bio Sciences Div 5
iL&S-Undergraduate Div dL&S-Math & Phys Sci Div 3
iL&S-Undergraduate Div dL&S-Social Sciences Div 66
iL&S-Undergraduate Div dL&S-Undergraduate Div 218
iL&S-Undergraduate Div dNA 10
iL&S-Undergraduate Div dOther EVCP Programs 15
iNA dClg of Chemistry 2
iNA dClg of Engineering 5
iNA dClg of Natural Resources 3
iNA dL&S-Administered Programs 1
iNA dL&S-Social Sciences Div 2
iNA dL&S-Undergraduate Div 2
iNA dNA 2
dClg of Chemistry gClg of Chemistry 183
dClg of Chemistry gClg of Engineering 12
dClg of Chemistry gClg of Natural Resources 7
dClg of Chemistry gHaas School of Business 1
dClg of Chemistry gL&S-Administered Programs 7
dClg of Chemistry gL&S-Arts & Humanities Div 7
dClg of Chemistry gL&S-Bio Sciences Div 21
dClg of Chemistry gL&S-Math & Phys Sci Div 7
dClg of Chemistry gL&S-Social Sciences Div 6
dClg of Chemistry gL&S-Undergraduate Div 5
dClg of Chemistry gNA 29
dClg of Engineering gClg of Chemistry 3
dClg of Engineering gClg of Engineering 686
dClg of Engineering gClg of Env Design 4
dClg of Engineering gClg of Natural Resources 3
dClg of Engineering gHaas School of Business 5
dClg of Engineering gL&S-Administered Programs 6
dClg of Engineering gL&S-Arts & Humanities Div 6
dClg of Engineering gL&S-Bio Sciences Div 8
dClg of Engineering gL&S-Math & Phys Sci Div 16
dClg of Engineering gL&S-Social Sciences Div 17
dClg of Engineering gL&S-Undergraduate Div 5
dClg of Engineering gNA 48
dClg of Env Design gClg of Engineering 8
dClg of Env Design gClg of Env Design 170
dClg of Env Design gClg of Natural Resources 5
dClg of Env Design gHaas School of Business 2
dClg of Env Design gL&S-Administered Programs 3
dClg of Env Design gL&S-Arts & Humanities Div 8
dClg of Env Design gL&S-Bio Sciences Div 4
dClg of Env Design gL&S-Math & Phys Sci Div 5
dClg of Env Design gL&S-Social Sciences Div 16
dClg of Env Design gL&S-Undergraduate Div 7
dClg of Env Design gNA 17
dClg of Natural Resources gClg of Engineering 1
dClg of Natural Resources gClg of Env Design 2
dClg of Natural Resources gClg of Natural Resources 377
dClg of Natural Resources gHaas School of Business 2
dClg of Natural Resources gL&S-Administered Programs 8
dClg of Natural Resources gL&S-Arts & Humanities Div 5
dClg of Natural Resources gL&S-Bio Sciences Div 15
dClg of Natural Resources gL&S-Math & Phys Sci Div 7
dClg of Natural Resources gL&S-Social Sciences Div 22
dClg of Natural Resources gL&S-Undergraduate Div 16
dClg of Natural Resources gNA 32
dHaas School of Business gClg of Natural Resources 3
dHaas School of Business gHaas School of Business 225
dHaas School of Business gL&S-Administered Programs 4
dHaas School of Business gL&S-Arts & Humanities Div 5
dHaas School of Business gL&S-Bio Sciences Div 3
dHaas School of Business gL&S-Math & Phys Sci Div 9
dHaas School of Business gL&S-Social Sciences Div 11
dHaas School of Business gL&S-Undergraduate Div 2
dHaas School of Business gNA 1
dL&S-Administered Programs gClg of Chemistry 1
dL&S-Administered Programs gClg of Engineering 1
dL&S-Administered Programs gClg of Env Design 1
dL&S-Administered Programs gClg of Natural Resources 4
dL&S-Administered Programs gHaas School of Business 7
dL&S-Administered Programs gL&S-Administered Programs 443
dL&S-Administered Programs gL&S-Arts & Humanities Div 7
dL&S-Administered Programs gL&S-Bio Sciences Div 12
dL&S-Administered Programs gL&S-Math & Phys Sci Div 4
dL&S-Administered Programs gL&S-Social Sciences Div 31
dL&S-Administered Programs gL&S-Undergraduate Div 6
dL&S-Administered Programs gNA 21
dL&S-Arts & Humanities Div gClg of Env Design 2
dL&S-Arts & Humanities Div gClg of Natural Resources 4
dL&S-Arts & Humanities Div gHaas School of Business 7
dL&S-Arts & Humanities Div gL&S-Administered Programs 9
dL&S-Arts & Humanities Div gL&S-Arts & Humanities Div 687
dL&S-Arts & Humanities Div gL&S-Bio Sciences Div 20
dL&S-Arts & Humanities Div gL&S-Math & Phys Sci Div 3
dL&S-Arts & Humanities Div gL&S-Social Sciences Div 34
dL&S-Arts & Humanities Div gL&S-Undergraduate Div 39
dL&S-Arts & Humanities Div gNA 59
dL&S-Bio Sciences Div gClg of Natural Resources 4
dL&S-Bio Sciences Div gHaas School of Business 3
dL&S-Bio Sciences Div gL&S-Administered Programs 6
dL&S-Bio Sciences Div gL&S-Arts & Humanities Div 10
dL&S-Bio Sciences Div gL&S-Bio Sciences Div 553
dL&S-Bio Sciences Div gL&S-Math & Phys Sci Div 6
dL&S-Bio Sciences Div gL&S-Social Sciences Div 5
dL&S-Bio Sciences Div gL&S-Undergraduate Div 1
dL&S-Bio Sciences Div gNA 15
dL&S-Math & Phys Sci Div gClg of Engineering 1
dL&S-Math & Phys Sci Div gClg of Natural Resources 1
dL&S-Math & Phys Sci Div gHaas School of Business 1
dL&S-Math & Phys Sci Div gL&S-Administered Programs 14
dL&S-Math & Phys Sci Div gL&S-Arts & Humanities Div 6
dL&S-Math & Phys Sci Div gL&S-Bio Sciences Div 4
dL&S-Math & Phys Sci Div gL&S-Math & Phys Sci Div 230
dL&S-Math & Phys Sci Div gL&S-Social Sciences Div 7
dL&S-Math & Phys Sci Div gL&S-Undergraduate Div 2
dL&S-Math & Phys Sci Div gNA 11
dL&S-Social Sciences Div gClg of Natural Resources 8
dL&S-Social Sciences Div gHaas School of Business 23
dL&S-Social Sciences Div gL&S-Administered Programs 24
dL&S-Social Sciences Div gL&S-Arts & Humanities Div 37
dL&S-Social Sciences Div gL&S-Bio Sciences Div 26
dL&S-Social Sciences Div gL&S-Math & Phys Sci Div 25
dL&S-Social Sciences Div gL&S-Social Sciences Div 1271
dL&S-Social Sciences Div gL&S-Undergraduate Div 52
dL&S-Social Sciences Div gNA 74
dL&S-Undergraduate Div gClg of Engineering 1
dL&S-Undergraduate Div gClg of Natural Resources 6
dL&S-Undergraduate Div gHaas School of Business 6
dL&S-Undergraduate Div gL&S-Administered Programs 8
dL&S-Undergraduate Div gL&S-Arts & Humanities Div 16
dL&S-Undergraduate Div gL&S-Bio Sciences Div 3
dL&S-Undergraduate Div gL&S-Social Sciences Div 32
dL&S-Undergraduate Div gL&S-Undergraduate Div 602
dL&S-Undergraduate Div gNA 50
dNA gL&S-Administered Programs 1
dNA gL&S-Undergraduate Div 1
dNA gNA 167
dOther EVCP Programs gClg of Engineering 1
dOther EVCP Programs gClg of Env Design 1
dOther EVCP Programs gClg of Natural Resources 13
dOther EVCP Programs gHaas School of Business 22
dOther EVCP Programs gL&S-Administered Programs 36
dOther EVCP Programs gL&S-Arts & Humanities Div 64
dOther EVCP Programs gL&S-Bio Sciences Div 52
dOther EVCP Programs gL&S-Math & Phys Sci Div 54
dOther EVCP Programs gL&S-Social Sciences Div 105
dOther EVCP Programs gL&S-Undergraduate Div 39
dOther EVCP Programs gNA 5
Raw
index.html
<!DOCTYPE html>
<meta charset="utf-8">
<title>sankey Experiment</title>
<style>
.node rect {
cursor: move;
fill-opacity: .9;
shape-rendering: crispEdges;
}
.node text {
pointer-events: none;
text-shadow: 0 1px 0 #fff;
}
.link {
fill: none;
stroke: #000;
stroke-opacity: .2;
}
.link:hover {
stroke-opacity: .5;
}
</style>
<body>
<p id="chart">
<script src="http://d3js.org/d3.v3.js"></script>
<script src="sankey.js"></script>
<script>
var units = "Students";
var margin = {top: 50, right: 10, bottom: 10, left: 10},
width = 1400 - margin.left - margin.right,
height = 740 - margin.top - margin.bottom;
var formatNumber = d3.format(",.0f"), // zero decimal places
format = function(d) { return formatNumber(d) + " " + units; },
color = d3.scale.category20();
// append the svg canvas to the page
var svg = d3.select("#chart").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform",
"translate(" + margin.left + "," + margin.top + ")");
// Set the sankey diagram properties
var sankey = d3.sankey()
.nodeWidth(36)
.nodePadding(10)
.size([width, height]);
var path = sankey.link();
// load the data with d3.csv instead of d3.json
//for another much simpler example uncomment the below
// d3.csv("d3noob_example.csv", function(error, data) {
d3.csv("idg.csv", function(error, data) {
//set up graph in same style as original example but empty
graph = {"nodes" : [], "links" : []};
data.forEach(function (d) {
graph.nodes.push({ "name": d.source });
graph.nodes.push({ "name": d.target });
graph.links.push({ "source": d.source, "target": d.target, "value": +d.value });
});
//thanks Mike Bostock https://groups.google.com/d/msg/d3-js/pl297cFtIQk/Eso4q_eBu1IJ
//this handy little function returns only the distinct / unique nodes
graph.nodes = d3.keys(d3.nest()
.key(function (d) { return d.name; })
.map(graph.nodes));
//it appears d3 with force layout wants a numeric source and target
//so loop through each link replacing the text with its index from node
graph.links.forEach(function (d, i) {
graph.links[i].source = graph.nodes.indexOf(graph.links[i].source);
graph.links[i].target = graph.nodes.indexOf(graph.links[i].target);
});
//now loop through each nodes to make nodes an array of objects rather than an array of strings
graph.nodes.forEach(function (d, i) {
graph.nodes[i] = { "name": d };
});
sankey
.nodes(graph.nodes)
.links(graph.links)
.layout(32);
// add in the links
var link = svg.append("g").selectAll(".link")
.data(graph.links)
.enter().append("path")
.attr("class", "link")
.attr("d", path)
.style("stroke-width", function(d) { return Math.max(1, d.dy); })
.sort(function(a, b) { return b.dy - a.dy; });
// add the link titles
link.append("title")
.text(function(d) {
return d.source.name + " → " +
d.target.name + "\n" + format(d.value); });
// add in the nodes
var node = svg.append("g").selectAll(".node")
.data(graph.nodes)
.enter().append("g")
.attr("class", "node")
.attr("transform", function(d) {
return "translate(" + d.x + "," + d.y + ")"; })
.call(d3.behavior.drag()
.origin(function(d) { return d; })
.on("dragstart", function() {
this.parentNode.appendChild(this); })
.on("drag", dragmove));
// add the rectangles for the nodes
node.append("rect")
.attr("height", function(d) { return d.dy; })
.attr("width", sankey.nodeWidth())
.style("fill", function(d) {
return d.color = color(d.name.replace(/ .*/, "")); })
.style("stroke", function(d) {
return d3.rgb(d.color).darker(2); })
.append("title")
.text(function(d) {
return d.name + "\n" + format(d.value); });
// add in the title for the nodes
node.append("text")
.attr("x", -6)
.attr("y", function(d) { return d.dy / 2; })
.attr("dy", ".35em")
.attr("text-anchor", "end")
.attr("transform", null)
.text(function(d) { return d.name; })
.filter(function(d) { return d.x < width / 2; })
.attr("x", 6 + sankey.nodeWidth())
.attr("text-anchor", "start");
// the function for moving the nodes
function dragmove(d) {
d3.select(this).attr("transform",
"translate(" + (
d.x = Math.max(0, Math.min(width - d.dx, d3.event.x))
) + "," + (
d.y = Math.max(0, Math.min(height - d.dy, d3.event.y))
) + ")");
sankey.relayout();
link.attr("d", path);
}
});
</script>
</body>
</html>
Raw
sankey.js
//from Mike Bostock
d3.sankey = function() {
var sankey = {},
nodeWidth = 24,
nodePadding = 8,
size = [1, 1],
nodes = [],
links = [];
sankey.nodeWidth = function(_) {
if (!arguments.length) return nodeWidth;
nodeWidth = +_;
return sankey;
};
sankey.nodePadding = function(_) {
if (!arguments.length) return nodePadding;
nodePadding = +_;
return sankey;
};
sankey.nodes = function(_) {
if (!arguments.length) return nodes;
nodes = _;
return sankey;
};
sankey.links = function(_) {
if (!arguments.length) return links;
links = _;
return sankey;
};
sankey.size = function(_) {
if (!arguments.length) return size;
size = _;
return sankey;
};
sankey.layout = function(iterations) {
computeNodeLinks();
computeNodeValues();
computeNodeBreadths();
computeNodeDepths(iterations);
computeLinkDepths();
return sankey;
};
sankey.relayout = function() {
computeLinkDepths();
return sankey;
};
sankey.link = function() {
var curvature = .5;
function link(d) {
var x0 = d.source.x + d.source.dx,
x1 = d.target.x,
xi = d3.interpolateNumber(x0, x1),
x2 = xi(curvature),
x3 = xi(1 - curvature),
y0 = d.source.y + d.sy + d.dy / 2,
y1 = d.target.y + d.ty + d.dy / 2;
return "M" + x0 + "," + y0
+ "C" + x2 + "," + y0
+ " " + x3 + "," + y1
+ " " + x1 + "," + y1;
}
link.curvature = function(_) {
if (!arguments.length) return curvature;
curvature = +_;
return link;
};
return link;
};
// Populate the sourceLinks and targetLinks for each node.
// Also, if the source and target are not objects, assume they are indices.
function computeNodeLinks() {
nodes.forEach(function(node) {
node.sourceLinks = [];
node.targetLinks = [];
});
links.forEach(function(link) {
var source = link.source,
target = link.target;
if (typeof source === "number") source = link.source = nodes[link.source];
if (typeof target === "number") target = link.target = nodes[link.target];
source.sourceLinks.push(link);
target.targetLinks.push(link);
});
}
// Compute the value (size) of each node by summing the associated links.
function computeNodeValues() {
nodes.forEach(function(node) {
node.value = Math.max(
d3.sum(node.sourceLinks, value),
d3.sum(node.targetLinks, value)
);
});
}
// Iteratively assign the breadth (x-position) for each node.
// Nodes are assigned the maximum breadth of incoming neighbors plus one;
// nodes with no incoming links are assigned breadth zero, while
// nodes with no outgoing links are assigned the maximum breadth.
function computeNodeBreadths() {
var remainingNodes = nodes,
nextNodes,
x = 0;
while (remainingNodes.length) {
nextNodes = [];
remainingNodes.forEach(function(node) {
node.x = x;
node.dx = nodeWidth;
node.sourceLinks.forEach(function(link) {
nextNodes.push(link.target);
});
});
remainingNodes = nextNodes;
++x;
}
//
moveSinksRight(x);
scaleNodeBreadths((size[0] - nodeWidth) / (x - 1));
}
function moveSourcesRight() {
nodes.forEach(function(node) {
if (!node.targetLinks.length) {
node.x = d3.min(node.sourceLinks, function(d) { return d.target.x; }) - 1;
}
});
}
function moveSinksRight(x) {
nodes.forEach(function(node) {
if (!node.sourceLinks.length) {
node.x = x - 1;
}
});
}
function scaleNodeBreadths(kx) {
nodes.forEach(function(node) {
node.x *= kx;
});
}
function computeNodeDepths(iterations) {
var nodesByBreadth = d3.nest()
.key(function(d) { return d.x; })
.sortKeys(d3.ascending)
.entries(nodes)
.map(function(d) { return d.values; });
//
initializeNodeDepth();
resolveCollisions();
for (var alpha = 1; iterations > 0; --iterations) {
relaxRightToLeft(alpha *= .99);
resolveCollisions();
relaxLeftToRight(alpha);
resolveCollisions();
}
function initializeNodeDepth() {
var ky = d3.min(nodesByBreadth, function(nodes) {
return (size[1] - (nodes.length - 1) * nodePadding) / d3.sum(nodes, value);
});
nodesByBreadth.forEach(function(nodes) {
nodes.forEach(function(node, i) {
node.y = i;
node.dy = node.value * ky;
});
});
links.forEach(function(link) {
link.dy = link.value * ky;
});
}
function relaxLeftToRight(alpha) {
nodesByBreadth.forEach(function(nodes, breadth) {
nodes.forEach(function(node) {
if (node.targetLinks.length) {
var y = d3.sum(node.targetLinks, weightedSource) / d3.sum(node.targetLinks, value);
node.y += (y - center(node)) * alpha;
}
});
});
function weightedSource(link) {
return center(link.source) * link.value;
}
}
function relaxRightToLeft(alpha) {
nodesByBreadth.slice().reverse().forEach(function(nodes) {
nodes.forEach(function(node) {
if (node.sourceLinks.length) {
var y = d3.sum(node.sourceLinks, weightedTarget) / d3.sum(node.sourceLinks, value);
node.y += (y - center(node)) * alpha;
}
});
});
function weightedTarget(link) {
return center(link.target) * link.value;
}
}
function resolveCollisions() {
nodesByBreadth.forEach(function(nodes) {
var node,
dy,
y0 = 0,
n = nodes.length,
i;
// Push any overlapping nodes down.
nodes.sort(ascendingDepth);
for (i = 0; i < n; ++i) {
node = nodes[i];
dy = y0 - node.y;
if (dy > 0) node.y += dy;
y0 = node.y + node.dy + nodePadding;
}
// If the bottommost node goes outside the bounds, push it back up.
dy = y0 - nodePadding - size[1];
if (dy > 0) {
y0 = node.y -= dy;
// Push any overlapping nodes back up.
for (i = n - 2; i >= 0; --i) {
node = nodes[i];
dy = node.y + node.dy + nodePadding - y0;
if (dy > 0) node.y -= dy;
y0 = node.y;
}
}
});
}
function ascendingDepth(a, b) {
return a.y - b.y;
}
}
function computeLinkDepths() {
nodes.forEach(function(node) {
node.sourceLinks.sort(ascendingTargetDepth);
node.targetLinks.sort(ascendingSourceDepth);
});
nodes.forEach(function(node) {
var sy = 0, ty = 0;
node.sourceLinks.forEach(function(link) {
link.sy = sy;
sy += link.dy;
});
node.targetLinks.forEach(function(link) {
link.ty = ty;
ty += link.dy;
});
});
function ascendingSourceDepth(a, b) {
return a.source.y - b.source.y;
}
function ascendingTargetDepth(a, b) {
return a.target.y - b.target.y;
}
}
function center(node) {
return node.y + node.dy / 2;
}
function value(link) {
return link.value;
}
return sankey;
};
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