D3 Examples - value collision

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>
  <div id="result"></div>
  <script>
    var data = [{id: 1, start:20, end: 30},
                {id: 2, start:12, end: 24},
                {id: 3, start:8, end: 31},
                {id: 4, start:28, end: 45},
                {id: 5, start:4, end: 13}
               ];
​
    var svg = d3.select("body").append("svg")
      .attr("width", 960)
      .attr("height", 300);
    var margin = {left:30, right:30, top: 50, bottom: 20}
    var width = svg.attr("width") - margin.left - margin.right;
    var height = svg.attr("height") - margin.bottom - margin.top;    
    
    var x = d3.scaleLinear().rangeRound([0, width]).domain(0, 50);
    var x_axis = d3.axisBottom(x).ticks(5, "s");
​
    var color = d3.scaleOrdinal(d3.schemeCategory10);
    
    svg.append("g")
        .attr("transform", 
              "translate(" 
                + margin.left + "," 
                + (height - margin.bottom) +")")
        .call(x_axis);  
​
  </script>
</body>
​
    