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Sankey
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<!DOCTYPE html> | |
<html class="ocks-org"> | |
<meta charset="utf-8"> | |
<title>Sankey Diagram</title> | |
<base href="http://bost.ocks.org/mike/sankey/" target="_blank"> | |
<style> | |
@import url(../style.css?aea6f0a); | |
#chart { | |
height: 900px; | |
} | |
.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> | |
<h1>Sankey Diagrams</h1> | |
<p id="chart"> | |
<aside>Drag to rearrange nodes.</aside> | |
<!-- <p class="attribution">Source: <a href="http://www.decc.gov.uk/en/content/cms/tackling/2050/calculator_on/calculator_on.aspx">Department of Energy & Climate Change</a>, <a href="http://tamc.github.com/Sankey/">Tom Counsell</a>. --> | |
<aside>Sankey diagrams are closely related to <a href="http://en.wikipedia.org/wiki/Alluvial_diagram">alluvial diagrams</a>, which show how network structure changes over time.</aside> | |
<p>Thanks to Mike Bostock, whose <a href="http://bost.ocks.org/mike/sankey/">D3 Sankey plugin</a> was used to help build this visualisation.</p> | |
<footer> | |
<aside>November 25, 2013</aside> | |
<a rel="author">Dan Wood</a> | |
</footer> | |
<script src="http://d3js.org/d3.v2.min.js?2.9.1"></script> | |
<script src="sankey.js"></script> | |
<script> | |
var margin = {top: 1, right: 1, bottom: 6, left: 1}, | |
width = 960 - margin.left - margin.right, | |
height = 900 - margin.top - margin.bottom; | |
var formatNumber = d3.format(",.3r"), | |
format = function(d) { return formatNumber(d) + " TWh"; }, | |
color = d3.scale.category20(); | |
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 + ")"); | |
var sankey = d3.sankey() | |
.nodeWidth(15) | |
.nodePadding(20) | |
.size([width, height]); | |
var path = sankey.link(); | |
d3.json("https://gist.github.com/DanielJWood/7751118/raw/fa750bcc148c705303b84e4eb831acbebfee403a/sankey.json", function(energy) { | |
sankey | |
.nodes(energy.nodes) | |
.links(energy.links) | |
.layout(32); | |
var link = svg.append("g").selectAll(".link") | |
.data(energy.links) | |
.enter().append("path") | |
.attr("class", "link") | |
.attr("d", path) | |
//Define with of stroke of link based whatever is larger, d.dy or 1 | |
.style("stroke-width", function(d) { return Math.max(1, d.dy); }) | |
.sort(function(a, b) { return b.dy - a.dy; }); | |
link.append("p") | |
.text(function(d) { return d.source.name + " → " + d.target.name + "\n" + format(d.value); }) | |
.attr("x", -6) | |
.attr("y", function(d) { return d.dy / 2; }) | |
.attr("dy", ".35em"); | |
var node = svg.append("g").selectAll(".node") | |
.data(energy.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)); | |
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); }); | |
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"); | |
function dragmove(d) { | |
d3.select(this).attr("transform", "translate(" + d.x + "," + (d.y = Math.max(0, Math.min(height - d.dy, d3.event.y))) + ")"); | |
sankey.relayout(); | |
link.attr("d", path); | |
} | |
}); | |
</script> |
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