D3 Examples - pos neg 2

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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!
    const width = 960;
    const height = 500;
    var svg = d3.select("body").append("svg")
      .attr("width", width)
      .attr("height", height)
​
    let data = d3.range(2)
        
    let g = svg.append('g')
    .attr('transform', `translate(${200}, ${height / 2})`);
​
    /** adding g element and rotated them around a cirlce, 360° */
    g.selectAll('g')
      .data(data)
      .enter()
      .append('g')
      .attr('transform', function (d, i) { return 'rotate(' + (180 * i / data.length) + ')'+ 'rotate(-135)'; });
    
    g.selectAll('g')
      .append('line')
      .attr('x1', 30 )
      .attr('y1', 0 )
        .attr('x2', 100 )
      .attr('y2', 0 )
        .attr('stroke-width', 30)
        .attr('stroke-linecap', 'round')
        .style('stroke', '#eee')
    
    g.append('circle')
        .attr('cx', 0)
      .attr('cy', 0)
      .attr('r', 20)
        .style('fill', '#eee')
      .attr('stroke', '#fff')
      .attr('stroke-width', 2)
    
  </script>
</body>
​
    