Ch. 4, Fig. 22 - D3.js in Action

This is the code for Chapter 4, Figure 22 from D3.js in Action which loads data and creates several interpolated lines using d3.svg.line().

<html>
<head>
  <title>D3 in Action Chapter 4 - Example 12</title>
  <meta charset="utf-8" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
</head>
<style>
  svg {
    height: 500px;
    width: 500px;
    border: 1px solid gray;
  }
line {
  shape-rendering: crispEdges;
  stroke: #000000;
  }

line.minor  {
  stroke: #777777;
  stroke-dasharray: 2,2;
}

path.domain {
  fill: none;
  stroke: black;
}

</style>
<body>

<div id="viz">
  <svg>
  </svg>
</div>
</body>
  <footer>
    
<script>
d3.csv("movies.csv", areaChart)

function areaChart(data) {

xScale = d3.scale.linear().domain([1,10.5]).range([20,480]);
yScale = d3.scale.linear().domain([0,35]).range([480,20]);
xAxis = d3.svg.axis()
.scale(xScale)
.orient("bottom")
.tickSize(480)
.tickValues([1,2,3,4,5,6,7,8,9,10]);

d3.select("svg").append("g").attr("id", "xAxisG").call(xAxis);
    
yAxis = d3.svg.axis()
.scale(yScale)
.orient("right")
.ticks(10)
.tickSize(480)
.tickSubdivide(true);
    
d3.select("svg").append("g").attr("id", "yAxisG").call(yAxis);
for (x in data[0]) {
      if (x != "day") {

movieArea = d3.svg.line() 
        .x(function(d) {
        return xScale(d.day) 
    })
        .y(function(d) {
        return yScale(d[x]) 
    })
        .interpolate("cardinal")
    
    d3.select("svg")
        .append("path")
        .style("id", x + "Area")
        .attr("d", movieArea(data))
        .attr("fill", "none")
        .attr("stroke", "black")
        .attr("stroke-width", 3)
        .style("opacity", .75)
        
      }
    }

}

</script>
  </footer>

</html>

https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js