This is the code for Chapter 5, Figure 22 from D3.js in Action showing how to use d3.layout.stack() to create a stacked bar chart.
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Ch. 5, Fig. 22 - D3.js in Action
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| <html> | |
| <head> | |
| <title>D3 in Action Chapter 5 - Example 10</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", function(error,data) {dataViz(data)}); | |
| function dataViz(incData) { | |
| expData = incData; | |
| stackData = []; | |
| var xScale = d3.scale.linear() | |
| .domain([1, 10]) | |
| .range([20, 440]); | |
| var yScale = d3.scale.linear() | |
| .domain([0, 70]) | |
| .range([480, 0]); | |
| var heightScale = d3.scale.linear() | |
| .domain([0, 70]) | |
| .range([0, 480]); | |
| var movieColors = d3.scale.category10(["movie1","movie2","movie3","movie4","movie5","movie6"]); | |
| for (x in incData[0]) { | |
| if (x != "day") { | |
| var newMovieObject = {name: x, values: []}; | |
| for (y in incData) { | |
| newMovieObject.values.push({x: parseInt(incData[y]["day"]) ,y: parseInt(incData[y][x])}) | |
| } | |
| stackData.push(newMovieObject); | |
| } | |
| } | |
| stackLayout = d3.layout.stack() | |
| .values(function(d) { return d.values; }); | |
| xAxis = d3.svg.axis().scale(xScale).orient("bottom").tickSize(480).ticks(10); | |
| d3.select("svg").append("g").attr("id", "xAxisG").call(xAxis); | |
| yAxis = d3.svg.axis().scale(yScale).orient("right").ticks(8).tickSize(480).tickSubdivide(true); | |
| d3.select("svg").append("g").attr("id", "yAxisG").call(yAxis); | |
| d3.select("svg").selectAll("g.bar") | |
| .data(stackLayout(stackData)) | |
| .enter() | |
| .append("g") | |
| .attr("class", "bar") | |
| .each(function(d) { | |
| d3.select(this).selectAll("rect") | |
| .data(d.values) | |
| .enter() | |
| .append("rect") | |
| .attr("x", function(p) { return xScale(p.x) - 15; }) | |
| .attr("y", function(p) { return yScale(p.y + p.y0); }) | |
| .attr("height", function(p) { return heightScale(p.y); }) | |
| .attr("width", 30) | |
| .style("fill", movieColors(d.name)) | |
| }) | |
| } | |
| </script> | |
| </footer> | |
| </html> |
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| day | movie1 | movie2 | movie3 | movie4 | movie5 | movie6 | |
|---|---|---|---|---|---|---|---|
| 1 | 20 | 8 | 3 | 0 | 0 | 0 | |
| 2 | 18 | 5 | 1 | 13 | 0 | 0 | |
| 3 | 14 | 3 | 1 | 10 | 0 | 0 | |
| 4 | 7 | 3 | 0 | 5 | 27 | 15 | |
| 5 | 4 | 3 | 0 | 2 | 20 | 14 | |
| 6 | 3 | 1 | 0 | 0 | 10 | 13 | |
| 7 | 2 | 0 | 0 | 0 | 8 | 12 | |
| 8 | 0 | 0 | 0 | 0 | 6 | 11 | |
| 9 | 0 | 0 | 0 | 0 | 3 | 9 | |
| 10 | 0 | 0 | 0 | 0 | 1 | 8 |
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