D3 Examples - Issue Breakdown

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<!DOCTYPE html>
<meta charset="utf-8">
<title>Issue Breakdown</title>
<style>
body {
  background: #fcfcfa;
  width: 944px;
  margin: 10px;
}
  
svg {
  font: 500 14px "arial", sans-serif;
  fill: #023848;
}
​
.node {
  transition: opacity 0.25s;
}
​
.node rect {
  fill-opacity: .75;
  shape-rendering: crispEdges;
}
​
.node text {
  pointer-events: none;
  font-size: 9px;
  opacity: 0;
  transition: opacity 0.25s;
}
​
.link {
  fill: none;
  stroke: #969696;
  stroke-opacity: .1;
}
​
.link:hover {
  stroke-opacity: .6;
}
</style>
<body>
<script src="https://d3js.org/d3.v3.min.js"></script>
<script src="https://bost.ocks.org/mike/sankey/sankey.js"></script>
<script>
var margin = {top: 1, right: 30, bottom: 1, left: 1},
    width = 940 - margin.left - margin.right,
    height = 480 - margin.top - margin.bottom;
    
var category20b_sq = [
  '#393b79', '#5254a3', '#6b6ecf', '#9c9ede',
  '#8c6d31', '#bd9e39', '#e7ba52', '#e7cb94',
  '#843c39', '#ad494a', '#d6616b', '#e7969c',
  '#637939', '#8ca252', '#b5cf6b', '#cedb9c', 
  '#ce6dbd', '#a55194', '#de9ed6', '#7b4173'
];
​
var color = d3.scale.ordinal()
  .range(category20b_sq);
​
var svg = d3.select("body").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(16)
  .nodePadding(10)
  .size([width, height]);
​
var path = sankey.link()
  .curvature(0.3);
​
d3.json("sankey.json", function(energy) {
  sankey
    .nodes(energy.nodes)
    .links(energy.links)
    .layout(20);
​
  var link = svg.append("g").selectAll(".link")
      .data(energy.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; })
      .on("mouseover", function(d) {
        d3.selectAll(".node")
          .style("opacity", 0.3)
          .filter(function(p) {
            return d.source.name == p.name ||
                   d.target.name == p.name;
          })
          .style("opacity", 1)
          .selectAll("text")
          .style("opacity", 1);
      })
      .on("mouseout", function(d) {
        d3.selectAll(".node")
          .style("opacity", null)
          .selectAll("text")
          .style("opacity", 0);
      });
​
  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 + ")"; });
​
  node.append("rect")
      .attr("height", function(d) { return d.dy; })
      .attr("width", sankey.nodeWidth())
      .style("fill", function(d) { return color(d.category); })
    .append("title")    
      .text(function(d) { return d.name; });
​
  node.append("text")
      .attr("x", 6 + sankey.nodeWidth())
      .attr("y", function(d) { return d.dy / 2; })
      .attr("dy", ".35em")
      .attr("text-anchor", "start")
      .attr("transform", null)
      .text(function(d) { return d.name; })
    .filter(function(d) { return d.x > width * .9; })
      .attr("class", function(d) { return d.category ; })
      .attr("text-anchor", "end")
      .attr("transform", function(d) { return "translate (" + ((d.dy / 2) + 30) + "," + (d.dy / 2) + ") rotate(90)"; });
});
</script>
​
    