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| key | value | date | |
|---|---|---|---|
| Group1 | 37 | 04/23/12 | |
| Group2 | 12 | 04/23/12 | |
| Group3 | 46 | 04/23/12 | |
| Group1 | 32 | 04/24/12 | |
| Group2 | 19 | 04/24/12 | |
| Group3 | 42 | 04/24/12 | |
| Group1 | 45 | 04/25/12 | |
| Group2 | 16 | 04/25/12 | |
| Group3 | 44 | 04/25/12 | |
| Group1 | 24 | 04/26/12 | |
| Group2 | 52 | 04/26/12 | |
| Group3 | 64 | 04/26/12 |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| body { | |
| font: 10px sans-serif; | |
| } | |
| .axis path, .axis line { | |
| fill: none; | |
| stroke: #000; | |
| shape-rendering: crispEdges; | |
| } | |
| </style> | |
| <body> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| var format = d3.time.format("%m/%d/%y"); | |
| var margin = {top: 20, right: 30, bottom: 30, left: 40}, | |
| width = 960 - margin.left - margin.right, | |
| height = 500 - margin.top - margin.bottom; | |
| var x = d3.time.scale() | |
| .range([0, width]); | |
| var y = d3.scale.linear() | |
| .range([height, 0]); | |
| var z = d3.scale.category20c(); | |
| var xAxis = d3.svg.axis() | |
| .scale(x) | |
| .orient("bottom") | |
| .ticks(d3.time.days); | |
| var yAxis = d3.svg.axis() | |
| .scale(y) | |
| .orient("left"); | |
| var stack = d3.layout.stack() | |
| .offset("zero") | |
| .values(function(d) { return d.values; }) | |
| .x(function(d) { return d.date; }) | |
| .y(function(d) { return d.value; }); | |
| var nest = d3.nest() | |
| .key(function(d) { return d.key; }); | |
| var area = d3.svg.area() | |
| .interpolate("cardinal") | |
| .x(function(d) { return x(d.date); }) | |
| .y0(function(d) { return y(d.y0); }) | |
| .y1(function(d) { return y(d.y0 + d.y); }); | |
| 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 + ")"); | |
| d3.csv("data.csv", function(data) { | |
| data.forEach(function(d) { | |
| d.date = format.parse(d.date); | |
| d.value = +d.value; | |
| }); | |
| var layers = stack(nest.entries(data)); | |
| x.domain(d3.extent(data, function(d) { return d.date; })); | |
| y.domain([0, d3.max(data, function(d) { return d.y0 + d.y; })]); | |
| svg.selectAll(".layer") | |
| .data(layers) | |
| .enter().append("path") | |
| .attr("class", "layer") | |
| .attr("d", function(d) { return area(d.values); }) | |
| .style("fill", function(d, i) { return z(i); }); | |
| svg.append("g") | |
| .attr("class", "x axis") | |
| .attr("transform", "translate(0," + height + ")") | |
| .call(xAxis); | |
| svg.append("g") | |
| .attr("class", "y axis") | |
| .call(yAxis); | |
| }); | |
| </script> |
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