D3 Force Simulation

forked from john-guerra's block: D3 Force Simulation

<!DOCTYPE html>
<head>
  <meta charset="utf-8">

<body>
  <h1>Force Directed layout</h1>
  <svg 
    width=400 
    height=400
    id="network"></svg>
  
    <script src="https://d3js.org/d3.v4.min.js"></script>
  <script>
    
    
    let svg = d3.select("#network"),
        width = +svg.attr("width"),
        height = + svg.attr("height");     
    
    let nodes = d3.range(100).map(() => {
      return {
        x: Math.random()*width,
        y: Math.random()*height
      };		      
    });
    
    let links = d3.range(100).map(() => {
      return {
        source:Math.floor(Math.random()*100),
        target:Math.floor(Math.random()*100)
      }
    })
    
    svg.selectAll(".node")
    	.data(nodes)
    	.enter()
    	.append("circle")
    	.attr("class", "node")
    	.attr("cx", (d) => d.x)
      .attr("cy", (d) => d.y)
      .style("fill", "steelblue")
      .attr("r", 3.5)

</script>
</body>

https://d3js.org/d3.v4.min.js