D3 Examples - color scales

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<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v3.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
  </style>
</head>
​
<body>
  <script>
    // Feel free to change or delete any of the code you see in this editor!
    var svg = d3.select("body").append("svg")
      .attr("width", 960)
      .attr("height", 500)
    
    var data1 = d3.range(10)
    
    var colorScale  = d3.scale.category20c()
    var colorScale1 = d3.scale.ordinal()
        .range(["#ff0000",
              "#00ff00",
              "#0000ff",
              "#e3e3e3",
              "#831031",
              "#f5c54b"])
    var colorScale2 = d3.scale.linear()
        .domain([0, 10])
        .range(["#ff0000","#fff600", "#00ff00"])
​
    var rects = svg.selectAll("rect")
        .data(data1);
    
    
    rects.enter()
        .append("rect")
        .attr({
        width: 10,
        height: 100,
        y:80,
        x: function(d, i) { 
          return i *50 + 50;
        },
        fill: function(d, i){
          return colorScale1(i);
        }
    })
    
  </script>
</body>
​
    