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November 8, 2015 22:23
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Directed Network in D3 for Dr. Huang
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source | target | value | |
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1 | 2 | 1 | |
1 | 3 | 1 | |
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47 | 12 | 1 | |
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48 | 41 | 1 | |
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50 | 14 | 1 |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<script src="http://d3js.org/d3.v3.js"></script> | |
<style> | |
path.link { | |
fill: none; | |
stroke: #666; | |
stroke-width: 1.5px; | |
} | |
circle { | |
fill: #ccc; | |
stroke: #fff; | |
stroke-width: 1.5px; | |
} | |
text { | |
fill: #000; | |
font: 10px sans-serif; | |
pointer-events: none; | |
} | |
</style> | |
<body> | |
<script> | |
// get the data | |
d3.csv("networkData.csv", function(error, links) { | |
var nodes = {}; | |
// Compute the distinct nodes from the links. | |
links.forEach(function(link) { | |
link.source = nodes[link.source] || | |
(nodes[link.source] = {name: link.source}); | |
link.target = nodes[link.target] || | |
(nodes[link.target] = {name: link.target}); | |
link.value = +link.value; | |
}); | |
var width = 960, | |
height = 500; | |
var force = d3.layout.force() | |
.nodes(d3.values(nodes)) | |
.links(links) | |
.size([width, height]) | |
.linkDistance(60) | |
.charge(-300) | |
.on("tick", tick) | |
.start(); | |
var svg = d3.select("body").append("svg") | |
.attr("width", width) | |
.attr("height", height); | |
// build the arrow. | |
svg.append("svg:defs").selectAll("marker") | |
.data(["end"]) // Different link/path types can be defined here | |
.enter().append("svg:marker") // This section adds in the arrows | |
.attr("id", String) | |
.attr("viewBox", "0 -5 10 10") | |
.attr("refX", 18) | |
.attr("refY", -0) | |
.attr("markerWidth", 6) | |
.attr("markerHeight", 6) | |
.attr("orient", "auto") | |
.append("svg:path") | |
.attr("d", "M0,-5L10,0L0,5"); | |
// add the links and the arrows | |
var path = svg.append("svg:g").selectAll("path") | |
.data(force.links()) | |
.enter().append("svg:path") | |
// .attr("class", function(d) { return "link " + d.type; }) | |
.attr("class", "link") | |
.attr("marker-end", "url(#end)"); | |
// define the nodes | |
var node = svg.selectAll(".node") | |
.data(force.nodes()) | |
.enter().append("g") | |
.attr("class", "node") | |
.call(force.drag); | |
// add the nodes | |
node.append("circle") | |
.attr("r", 5); | |
// add the text | |
node.append("text") | |
.attr("x", 12) | |
.attr("dy", ".35em") | |
.text(function(d) { return d.name; }); | |
// add the curvy lines | |
function tick() { | |
path.attr("d", function(d) { | |
var dx = d.target.x - d.source.x, | |
dy = d.target.y - d.source.y, | |
dr = dx * dx + dy * dy; | |
return "M" + | |
d.source.x + "," + | |
d.source.y + "A" + | |
dr + "," + dr + " 0 0,1 " + | |
d.target.x + "," + | |
d.target.y; | |
}); | |
node | |
.attr("transform", function(d) { | |
return "translate(" + d.x + "," + d.y + ")"; }); | |
} | |
}); | |
</script> | |
</body> | |
</html> |
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