index.html
<!DOCTYPE html>
<head>
<meta charset="utf-8">
</head>
<style>
.group-1{
fill: steelblue;
fill-opacity:0.5;
stroke: steelblue;
stroke-width:2px;
}
.group-0{
fill: red;
fill-opacity:0.5;
stroke: red;
stroke-width:2px;
}
</style>
<body>
<svg width="960" height="600">
<g transform="translate(50,50)"></g>
</svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script src="//vizjs.org/viz.v1.3.0.min.js"></script>
<script>
var point = viz.point()
.data(randomData())
.drawPoints(drawPoints)
d3.select("g").call(point)
function randomData(){
return d3.range(200).map(function(i){ return {key:i, value: Math.random()}; });
}
function drawPoints(){
d3.select(this).append("circle")
.attr("r",10)
.attr("cx",function(d){ return d.x})
.attr("cy",function(d){ return d.y})
.attr("class",function(d){ return "group-"+(d.data.key%2);})
}
</script>