D3 Examples - ScatterPlot bi D3

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<!doctype html>
<html lang="ja">
<head>
  <meta charset="UTF-8">
  <title>ScatterPlot Chart</title>
<style>
  .axis path,
  .axis line{
    fill: none;
    stroke: black;
  }
​
  .tick text{
    font-size: 12px;
  }
​
  circle {
    fill: orange;
}
  
</style>
</head>
<body>
<script src="https://d3js.org/d3.v3.js"></script>
<script>
​
var margin = {top: 20, right: 100, bottom: 30, left: 100},
    width = 1050 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom;
​
d3.csv("graduates.csv", function(error, data) {
  if (error) throw error;
​
  data.forEach(function(d) {
            d.x = d.Employed;
            d.y = d.Masters;
   }); 
​
  var xScale = d3.scale.linear()
    .domain([0, d3.max(data, function(d){ return d.x; })])
    .range([0, width]);
​
var yScale = d3.scale.linear()
    .domain([0, d3.max(data, function(d){ return d.y/100; })])
    .range([height, 0]);
​
var xAxis = d3.svg.axis().scale(xScale).orient("bottom");
​
var yAxis = d3.svg.axis()
    .scale(yScale)
    .orient("left");
​
var svg = d3.select("body").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom)
  .append("g")
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")");
​
  svg.append("g")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis)
        .append("text")
      .attr("x", 900)
      .attr("dx", "-4em")
      .attr("text-anchor", "end")
      .text("Employed Student");
​
  svg.append("g")
      .attr("class", "y axis")
      .call(yAxis)
        .append("text")
        .attr("transform", "rotate(-90)")
      .attr("y", 7)
      .attr("dy", "-4em")
      .attr("text-anchor", "end")
      .text("Masters Student");
    
  svg.selectAll("scatter-dots")
      .data(data)
      .enter().append("svg:circle")
          .attr("cx", function (d) { return xScale(d.x); } )
          .attr("cy", function (d) { return yScale(d.y); } )
          .attr("r", 3);
        
});
</script>
</body>
</html>
    