D3 Sankey Diagram

A demonstration of d3-sankey using Zoom control, drag nodes (vertically), tooltip boxs, colors links (by color's nodes) and nodes values.

Thanks Mike Bostock!

<!DOCTYPE html>
<html>
	<meta charset="utf-8"/>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>

<script src="d3sankey.js"></script>

h1, h2, h3 {
			line-height: 12px !important;
		}
		.d3-tip h1 {
			font-size: 14px;
			padding: 0;
			margin-bottom: 5px;
			width: 100%;
		}
		.d3-tip h2 {
			font-weight: bold;
			font-size: 12px;
			padding-right: inherit;
			padding-left: inherit;
			padding-top: 2px;
			padding-bottom: 2px;
			margin: 0px;
		}
		.d3-tip h3 {
			font-weight: normal;
			font-size: 8px;
			margin: 0;
			padding: 0;
		}
		.d3-tip table {
			font-weight: normal;
			font-size: 12px;
			padding: none;
			margin: 0;
			width: 100%;
			border: none;
			border-collapse: collapse;
		}
		.d3-tip td {
			padding-top: 2px;
			padding-bottom: 2px;
		}
		.d3-tip .col-left {
			padding-right: 8px;
		}
		.d3-tip .table-wrapper {
			margin: 0;
			padding: inherit;
			border: none;
		}
		.d3-tip {
			line-height: 1;
			font-weight: normal;
			padding: 4px;
			background: white;
			color: black;
			border-radius: 2px;
			pointer-events: none;
			background:  white;
			box-shadow: 1px 1px 4px grey;
		}
    </style>

</style>
	<style>
	
	.d3-zoom-controls {
	  position: absolute;
	  left: 15px;
	  top: 10px;
	}
	
	.d3-zoom-controls .btn-circle {
	  width: 30px;
	  height: 30px;
	  align-items: center;
	  padding: 0px 0;
	  font-size: 18px;
	  line-height: 2.00;
	  display: grid;
	  border-radius: 30px;
	  background: rgba(255, 255, 255, 0.7);
	  color: gray;
	  margin-top: 10px;
	}
	
	</style>
	<body>
		<div id="sankey" class="sankeybox">
			<div class="d3-zoom-controls">
			  <a data-zoom="+0.5" class="btn btn-circle"><span class="fa fa-plus"></span></a>
			  <a data-zoom="-0.5" class="btn btn-circle"><span class="fa fa-minus"></span></a>
			  <a data-zoom="0"    class="btn btn-circle"><span class="fa fa-crosshairs"></span></a>
			</div>
		</div>

//Zoom function:
		//Programmatic Pan+Zoom III (Mike Bostock’s Block 7ec977c95910dd026812)
		//https://bl.ocks.org/mbostock/7ec977c95910dd026812
		d3.selectAll("a[data-zoom]").on("click", clicked);
		function clicked() {
			var valueZoom = this.getAttribute("data-zoom");
			if (valueZoom != 0)
			{
			   svg.call(zoom);
			  // Record the coordinates (in data space) of the center (in screen space).
			  var center0 = zoom.center(), translate0 = zoom.translate(), coordinates0 = coordinates(center0);
			  zoom.scale(zoom.scale() * Math.pow(2, +valueZoom));

// Translate back to the center.
			  var center1 = point(coordinates0);
			  zoom.translate([translate0[0] + center0[0] - center1[0], translate0[1] + center0[1] - center1[1]]);

svg.transition().duration(750).call(zoom.event);
			} else {
				fitZoom();
			}
		}

function fitZoom()
		{
			svg.transition().duration(500).call(zoom.translate([20,10]).scale(1).event);
		}
		
		function coordinates(point) {
		  var scale = zoom.scale(), translate = zoom.translate();
		  return [(point[0] - translate[0]) / scale, (point[1] - translate[1]) / scale];
		}

function point(coordinates) {
		  var scale = zoom.scale(), translate = zoom.translate();
		  return [coordinates[0] * scale + translate[0], coordinates[1] * scale + translate[1]];
		}
				  
		function showSankey(energy)
		{
			$('.d3-tip-nodes').remove(); //clear olds tips
			var chartBox = d3.select("#sankey").node().getBoundingClientRect();
			var margin = {top: 10, right: 10, bottom: 10, left: 20},
			width = chartBox.width - chartBox.left - margin.left - margin.right,
			height = chartBox.height - chartBox.top  - margin.top - margin.bottom;
			
		  var linkTooltipOffset = 72,
			  nodeTooltipOffset = 130;
			  
		  //Tooltip function:
		  //D3 sankey diagram with view options (Austin Czarnecki’s Block cc6371af0b726e61b9ab)
		  //https://bl.ocks.org/austinczarnecki/cc6371af0b726e61b9ab
		  var tipLinks = d3.tip()
			  .attr('class', 'd3-tip')
			  .offset([-10,0]);

tipNodes.html(function(d) {
			  var object = d3.entries(d),
				  nodeName = object[1].value,
				  linksTo = object[3].value,
				  linksFrom = object[4].value,
				  html;

html =  '<div class="table-wrapper">'+
					  '<h1>'+nodeName+'</h1>'+
					  '<table>';
			  if (linksFrom.length > 0 & linksTo.length > 0) {
				html+= '<tr><td><h2>Input:</h2></td><td></td></tr>'
			  }
			  for (i = 0; i < linksFrom.length; ++i) {
				html += '<tr>'+
				  '<td class="col-left">'+linksFrom[i].source.name+'</td>'+
				  '<td align="right">'+formatAmount(linksFrom[i].value)+'</td>'+
				'</tr>';
			  }
			  if (linksFrom.length > 0 & linksTo.length > 0) {
				html+= '<tr><td><h2>Output:</h2></td><td></td></tr>'
			  }
			  for (i = 0; i < linksTo.length; ++i) {
				html += '<tr>'+
						  '<td class="col-left">'+linksTo[i].target.name+'</td>'+
						  '<td align="right">'+formatAmount(linksTo[i].value)+'</td>'+
						'</tr>';
			  }
			  html += '</table></div>';
			  return html;
			});
			
			function zoomed() {
			  svg.attr("transform", "translate(" + d3.event.translate + ")scale(" + d3.event.scale + ")");
			}

function dragstarted(d) {
			  d3.select(this).classed("dragging", true);
			}

function dragged(d) {
			  d3.select(this).attr("cx", d.x = d3.event.x).attr("cy", d.y = d3.event.y);
			}

var sankey = d3sankey()
			.nodeWidth(40)
			.nodePadding(15)
			.size([width, height]);

var path = sankey.link();
		  sankey
			  .nodes(energy.nodes)
			  .links(energy.links)
			  .layout(32);

var fontScale = d3.scale.linear().domain(d3.extent(energy.nodes, function(d) { return d.value })).range([18, 30]);

node.append("rect")
			  .attr("height", function(d) { return d.dy; })
			  .attr("width", sankey.nodeWidth())
			  .style("fill", function(d) {
				  if (d.color == undefined)
					return d.color = color(d.name.replace(/ .*/, "")); //get new color if node.color is null
				  return d.color;
			  })
			  .style("stroke", function(d) { return d3.rgb(d.color).darker(2); });

node.append("text")
			  .attr("class","nodeValue")
			  .text(function(d) { return d.name + "\n" + format(d.value); });

node.selectAll("text.nodeValue")
			  .attr("x", sankey.nodeWidth() / 2)
			  .attr("y", function (d) { return (d.dy / 2) })
			  .text(function (d) { return formatNumber(d.value); })
			  .attr("dy", 5)
			  .attr("text-anchor", "middle");

node.append("text")
			  .attr("class","nodeLabel")
			  .style("fill", function(d) {
					return d3.rgb(d.color).darker(2.4);
			  })
			  .style("font-size", function(d) {
					return fontScale(d.value) + "px";
			  });
			  
		  node.selectAll("text.nodeLabel")	
			  .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);
			};

fitZoom();
		}

function getData() {
			return {
				"nodes": [{
				"node": 0,
				"name": "node0",
				color: "#1f77b4"
			}, {
				"node": 1,
				"name": "node1",
				color:"#aec7e8"
			}, {
				"node": 2,
				"name": "node2",
				color: "#ff7f0e"
			}, {
				"node": 3,
				"name": "node3",
				color: "#ffbb78"
			}, {
				"node": 4,
				"name": "node4",
				color: "#2ca02c"
			}, {
				"node": 5,
				"name": "node5",
				color: "#98df8a"
			}, {
				"node": 6,
				"name": "node6",
				color: "#d62728"
			}, {
				"node": 7,
				"name": "node7",
				color: "#ff9896"
			}],
				"links": [{
				"source": 0,
				"target": 2,
				"value": 25
			}, {
				"source": 1,
				"target": 2,
				"value": 5
			}, {
				"source": 1,
				"target": 3,
				"value": 20
			}, {
				"source": 2,
				"target": 4,
				"value": 29
			}, {
				"source": 2,
				"target": 5,
				"value": 1
			}, {
				"source": 3,
				"target": 4,
				"value": 10
			}, {
				"source": 3,
				"target": 5,
				"value": 2
			}, {
				"source": 3,
				"target": 6,
				"value": 8
			}, {
				"source": 4,
				"target": 7,
				"value": 39
			}, {
				"source": 5,
				"target": 7,
				"value": 3
			}, {
				"source": 6,
				"target": 7,
				"value": 8
			}]};
		};

showSankey(getData());
		</script>
	</body>
</html>

Modified http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js to a secure url

Modified http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/js/bootstrap.min.js to a secure url

Modified http://d3js.org/d3.v3.js to a secure url

Updated missing url https://cdn.rawgit.com/Caged/d3-tip/896d387c653b4d73cea9cdd0740aa8794754417a/index.js to https://cdn.jsdelivr.net/gh/caged/d3-tip/896d387c653b4d73cea9cdd0740aa8794754417a/index.js

https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js

https://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/js/bootstrap.min.js

https://d3js.org/d3.v3.js

https://cdn.rawgit.com/Caged/d3-tip/896d387c653b4d73cea9cdd0740aa8794754417a/index.js