Viz - Bar - stacked - legend - hover

<!DOCTYPE html>
  <head>
    <meta charset="utf-8">
  </head>
<style>
.viz-bar .bar{
  fill: steelblue;
}
.viz-legend:hover{
  cursor:pointer;
}
</style>
<body>
<svg width="960" height="600">
<g transform="translate(50,50)" id="bars"></g>
<g transform="translate(300,500)" id="legend"></g>
</svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script src="https://vizjs.org/viz.v1.3.0.min.js"></script>
<script>
var fill = {"value1":"#342E3A", "value2":"#B1200F", "value3":"#BB6622", "value4":"#BB9944"};
var keys = ["value1","value2","value3","value4"];
var data = Data();
	
var stack = d3.stack().keys(keys)(data)

function update(k){

if(!arguments.length) stack = d3.stack().keys(keys)(data); 
  else {
	var newdata = data.map(function(d){ return (r = {key:d.key, value1:0, value2:0, value3:0, value4:0}, r[k]=d[k], r); });
  
	stack = d3.stack().keys(keys)(newdata); 
  }

bars
	.data(stack)
	.selectAll(".bar")
	.data(function(d){ return bar.data(d).bars(); })
	.transition().duration(500)
	.attr("x", function(d){ return d.x;})
	.attr("y", function(d){ return d.y;})
	.attr("width", function(d){ return d.width;})
	.attr("height", function(d){ return d.height;});  
}

function Data(){
  return d3.range(20).map(function(i){ return {key:i, value1: Math.random(), value2: Math.random(), value3: Math.random(), value4: Math.random()}; });
}

// adjust the bl.ocks frame dimension.
d3.select(self.frameElement).style("height", "600px");

</script>

Modified http://vizjs.org/viz.v1.3.0.min.js to a secure url

https://d3js.org/d3.v4.min.js

https://vizjs.org/viz.v1.3.0.min.js