NPashaP/.block

## .block
license: gpl-3.0

## index.html
<!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="http://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)

var bar = viz.bar()
	.key(function(d){ return d.data.key})
	.value0(function(d){ return d[0]})
	.value1(function(d){ return d[1]})
	.valueScale(d3.scaleLinear().domain([0,4]).range([420,0]))

var bars = d3.select("#bars")
	.selectAll(".bars")
	.data(stack)
	.enter()
	.append("g")
	.attr("class","bars")
	.style("fill",function(d,i){ return fill[d.key]})

bars.selectAll(".bar")
	.data(function(d){ return bar.data(d).bars(); })
	.enter()
	.append("rect")
	.attr("class", "bar")
	.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;})

var legend = viz.legend()
	.data(keys)
	.rows(1)
	.width(300)
	.fill(function(d){ return fill[d]})
	.onMouseOver(function(k){ return update(k); })
	.onMouseOut(function(k){ return update(); })

d3.select("#legend").call(legend)

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>
	<!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="http://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)

	var bar = viz.bar()
	.key(function(d){ return d.data.key})
	.value0(function(d){ return d[0]})
	.value1(function(d){ return d[1]})
	.valueScale(d3.scaleLinear().domain([0,4]).range([420,0]))

	var bars = d3.select("#bars")
	.selectAll(".bars")
	.data(stack)
	.enter()
	.append("g")
	.attr("class","bars")
	.style("fill",function(d,i){ return fill[d.key]})

	bars.selectAll(".bar")
	.data(function(d){ return bar.data(d).bars(); })
	.enter()
	.append("rect")
	.attr("class", "bar")
	.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;})

	var legend = viz.legend()
	.data(keys)
	.rows(1)
	.width(300)
	.fill(function(d){ return fill[d]})
	.onMouseOver(function(k){ return update(k); })
	.onMouseOut(function(k){ return update(); })

	d3.select("#legend").call(legend)

	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>