D3.js轴程序

<html>
   <head>
      <script type = text/javascript src = https://d3js.org/d3.v4.min.js></script>
      <style>
         svg text {
            fill: purple;
            font: 12px sans-serif;
            text-anchor: end;
         }
      </style>
   </head>

   <body>
      <script>
         var width = 400, height = 400;
         var data = [100, 120, 140, 160, 180, 200];
         var svg = d3.select(body)
            .append(svg)
            .attr(width, width)
            .attr(height, height);

         var xscale = d3.scaleLinear()
            .domain([0, d3.max(data)])
            .range([0, width - 100]);

         var yscale = d3.scaleLinear()
            .domain([0, d3.max(data)])
            .range([height/2, 0]);

         var x_axis = d3.axisBottom().scale(xscale);

         var y_axis = d3.axisLeft().scale(yscale);

         svg.append(g)
            .attr(transform, translate(50, 10))
            .call(y_axis);

         var xAxisTranslate = height/2 + 10;

         svg.append(g)
            .attr(transform, translate(50,  + xAxisTranslate  +))
            .call(x_axis)
      </script>
   </body>
</html>

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