D3 Examples - Genome Browser

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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>
    <!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", 500)
        
    
    var flag_data = [{"fill":"blue", "x": 100},
                {"fill":"white", "x": 300},
                {"fill":"red", "x": 500}]
    
    console.log(flag_data);
    
    svg.selectAll("rect") //selects anything in the svg data file
        .data(flag_data)    //data join... what connects the data to making the pic
        .enter()
        .append("rect")
        .attr("y",100)
        .attr("x", function(d) {return d.x;})
        .attr("width", 200)
        .attr("height", 400)
        .attr("fill", function (d) {return d.fill})
    
    
    
    
    
    
​
  </script>
</body>
​
    