D3 Examples - Loading data

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<!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 w = 600;
        var h = 250;
            
//     var colData = [ 5, 10, 13, 19, 21, 25, 22, 18, 15, 13,
//                    11, 12, 15, 20, 18, 17, 16, 18, 23, 25 ];
    var colData = [];
    
    d3.csv("graduates.csv", function(error,data) {
        data.forEach(function(node) {
          var val = node.Asians;
            colData.push(val);
        });
//           out = colData[0]; 
//           console.log(colData[0]);
      });
    
    var xScale = d3.scaleBand()
    .domain(d3.range(colData.length))
    .rangeRound([0, w])
    .paddingInner(0.05);
​
    var yScale = d3.scaleLinear()
    .domain([0, d3.max(colData)])
    .range([0, h]);
​
    //Create SVG element
    var svg = d3.select("body")
    .append("svg")
    .attr("width", w)
    .attr("height", h);
​
    //Create bars
    svg.selectAll("rect")
      .data(colData)
      .enter()
      .append("rect")
      .attr("x", function(d, i) {
      return xScale(i);
    })
      .attr("y", function(d) {
      return h - yScale(d);
    })
      .attr("width", xScale.bandwidth())
      .attr("height", function(d) {
      return yScale(d);
    })
      .attr("fill", function(d) {
      return "rgb(0, 0, " + Math.round(d * 10) + ")";
    });
​
    //Create labels
//     svg.selectAll("text")
//       .data(dataset)
//       .enter()
//       .append("text")
//       .text(function(d) {
//       return d;
//     })
//       .attr("text-anchor", "middle")
//       .attr("x", function(d, i) {
//       return xScale(i) + xScale.bandwidth() / 2;
//     })
//       .attr("y", function(d) {
//       return h - yScale(d) + 14;
//     })
//       .attr("font-family", "sans-serif")
//       .attr("font-size", "11px")
//       .attr("fill", "white");
​
  </script>
</body>
​
    