Monthly Archives: April 2014

Test

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[d3-source canvas=”chart”]

var margin = {top: 50, right: 1, bottom: 6, left: 150},
width = 950 – margin.left – margin.right,
height = 500 – margin.top – margin.bottom;

var formatNumber = d3.format(“,.0f”),
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(10)
.size([width, height]);

var path = sankey.link();

d3.json(“/wp-content/uploads/2014/05/institutions.js”, 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)
.style(“stroke-width”, function(d) { return Math.max(1, d.dy); })
.sort(function(a, b) { return b.dy – a.dy; });

link.append(“title”)
.text(function(d) { return d.source.name + ” → ” + d.target.name + “\n” + format(d.value); });

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);
}
});
[/d3-source]