D3 Examples - Genes with Text

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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>
    
    var svg = d3.select("body").append("svg")
      .attr("width", 960)
      .attr("height", 500)
        d3.json("data.json", function(err, mydata) {
      var group = d3.select("svg").selectAll("g")
        .data(mydata)
        .enter()
        .append("g");
                group.append("rect")
        .attr ("stroke-width", 4)
        .attr("stroke", "black")
        .attr("y", function (d) {
            if (d.orientation == "forward") {
            return 100;
          }
            else if (d.orientation == "reverse") {
            return 125;
          }
      })
        .attr("height",35)
        .attr("x", function (d) {
            return d.start;
        })
        .attr("width", function (d) {
            return d.stop - d.start;
        })
        .attr("fill", function(d) {
            if (d.orientation == "forward") {
            return "#40fcc0";  
          }
            else if (d.orientation == "reverse") {
            return "#40d3fc";
          }
        })          
        group.append("text")
            .text(function(d){return d.name})
            .attr("y", function (d) {
            if (d.orientation == "forward") {
            return 125;
           }
        else return 150})
            .attr("x", function (d) {
            return d.start + 5
        })
         .attr ("font-family", "impact")
         .attr ("fill", "white")
         .attr ("font-size", "18px")
         
    });
            
  </script>
</body>
​
    