Line Chart width points

Line Chart width points

<!DOCTYPE html>
<html>
  <head>
    <title>Line Chart</title>
    <script type="text/javascript" src="../../d3.v2.js"></script>
   <style>
     body {
  font: 10px sans-serif;
}

.rule line {
  stroke: #eee;
  shape-rendering: crispEdges;
}

.rule line.axis {
  stroke: #000;
}

.line {
  fill: none;
  stroke: steelblue;
  stroke-width: 1.5px;
}

circle.line {
  fill: #fff;
}
   </style>
  </head>
  <body>
    <script type="text/javascript">
     var data = d3.range(20).map(function(i) {
  return {x: i / 19, y: (Math.sin(i / 3) + 1) / 2};
});

var w = 450,
    h = 275,
    p = 20,
    x = d3.scale.linear().domain([0, 1]).range([0, w]),
    y = d3.scale.linear().domain([0, 1]).range([h, 0]);

var vis = d3.select("body")
    .data([data])
  .append("svg")
    .attr("width", w + p * 2)
    .attr("height", h + p * 2)
  .append("g")
    .attr("transform", "translate(" + p + "," + p + ")");

var rules = vis.selectAll("g.rule")
    .data(x.ticks(10))
  .enter().append("g")
    .attr("class", "rule");

rules.append("line")
    .attr("x1", x)
    .attr("x2", x)
    .attr("y1", 0)
    .attr("y2", h - 1);

rules.append("line")
    .attr("class", function(d) { return d ? null : "axis"; })
    .attr("y1", y)
    .attr("y2", y)
    .attr("x1", 0)
    .attr("x2", w + 1);

rules.append("text")
    .attr("x", x)
    .attr("y", h + 3)
    .attr("dy", ".71em")
    .attr("text-anchor", "middle")
    .text(x.tickFormat(10));

rules.append("text")
    .attr("y", y)
    .attr("x", -3)
    .attr("dy", ".35em")
    .attr("text-anchor", "end")
    .text(y.tickFormat(10));

vis.append("path")
    .attr("class", "line")
    .attr("d", d3.svg.line()
    .x(function(d) { return x(d.x); })
    .y(function(d) { return y(d.y); }));

vis.selectAll("circle.line")
    .data(data)
  .enter().append("circle")
    .attr("class", "line")
    .attr("cx", function(d) { return x(d.x); })
    .attr("cy", function(d) { return y(d.y); })
    .attr("r", 3.5);
   </script>
  </body>
</html>


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