D3 Examples - ekample1

xxxxxxxxxx
 
<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.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", 600)
​
    var data = [10, 20, 30, 40, 60, 255];
    
    var y = d3.scaleLinear()
        .domain([0, d3.max(data)])
        .range([0, 200]);
    
    var x = d3.scaleBand()
        .domain(d3.range(data.length))
        .range([0, 400]);
    
    // catagory
    var color = d3.scaleOrdinal(d3.schemeCategory20);
    // value 
    var color2 = d3.scaleLinear()
        .domain(d3.extent(data))
        .range(["blue", "red"]);
    
    svg.selectAll("rect").data(data).enter()
        .append("rect")
      .attr("y", function(d, i) { return 400 - y(d); })
      .attr("x", function(d, i) { return x(i); })
      .attr("height", function(d, i) { return y(d); })
      .attr("width", x.bandwidth())
      .attr("fill", function(d, i) { return color2(d)})
      
​
  </script>
</body>
​
    