D3 Examples - simple scatterplot

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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!
    var data = [{x:17, y:61},
               {x:19, y:25},
               {x:26, y:22},
               {x:39, y:31},
               {x:34, y:26},
               {x:25, y:47},
               {x:14, y:34}]
    
    var svg = d3.select("body").append("svg")
      .attr("width", 960)
      .attr("height", 500)
    
    var y_scale = d3.scaleLinear()
      .domain([0,70])
        .range([400,20]);
    
    var x_scale = d3.scaleLinear()
      .domain([0, 70])
        .range([20, 400]);
    
    var xAxis = d3.axisBottom()
                                .scale(x_scale);
    var yAxis = d3.axisLeft()
                                .scale(y_scale);
    
    svg.append('g')
            .attr("transform", "translate(0," + 400 + ")")
            .call(xAxis);
    
    svg.append('g')
            .attr("transform", "translate(20," + 0 + ")")
            .call(yAxis);
    
​
    var circles = svg.selectAll('circle')
        .data(data)
        .enter()
        .append('circle')
        .attr('cx', (d,i)=>x_scale(d.x))
        .attr('cy',function(d,i) {
      //console.log(d,i);
      return y_scale(d.y)
        })
        .attr('r',(d,i)=>i+2)
        .attr('fill',(d,i)=>'#66'+String(i*3))
    
    
    
​
​
  </script>
</body>
​
    