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<!DOCTYPE html> |
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<meta charset="utf-8"> |
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<style> |
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body { |
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font: 10px sans-serif; |
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} |
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button { |
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position: absolute; |
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left: 10px; |
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top: 10px; |
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} |
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.axis path, |
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.axis line { |
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fill: none; |
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stroke: #000; |
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shape-rendering: crispEdges; |
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} |
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.browser text { |
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text-anchor: left; |
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} |
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</style> |
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<body> |
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<button onclick="transition()">Update</button> |
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<script src="http://d3js.org/d3.v3.js"></script> |
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<script> |
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var margin = {top: 20, right: 50, bottom: 30, left: 50}, |
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width = 960 - margin.left - margin.right, |
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height = 500 - margin.top - margin.bottom; |
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var parseDate = d3.time.format("%y-%b-%d").parse, |
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formatPercent = d3.format(".0%"); |
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var x = d3.time.scale() |
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.range([0, width]); |
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var y = d3.scale.linear() |
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.range([height, 0]); |
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var color = d3.scale.category20(); |
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var xAxis = d3.svg.axis() |
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.scale(x) |
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.orient("bottom"); |
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var yAxis = d3.svg.axis() |
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.scale(y) |
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.orient("left") |
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.tickFormat(formatPercent); |
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var line = d3.svg.area() |
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.interpolate("basis") |
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.x(function(d) { return x(d.date); }) |
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.y0(function(d) { return y(d.y); }) |
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.y1(function(d) { return y(d.y); }); |
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function line_to_stacked(t) { |
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return d3.svg.area() |
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.interpolate("basis") |
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.x(function(d) { return x(d.date); }) |
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.y0(function(d) { return y(t * d.y0 + d.y); }) |
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.y1(function(d) { return y(t * d.y0 + d.y); }); |
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} |
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function area_to_stacked(t) { |
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return d3.svg.area() |
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.interpolate("basis") |
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.x(function(d) { return x(d.date); }) |
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.y0(function(d) { return y(d.y0 + (1 - t) * d.y); }) |
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.y1(function(d) { return y(d.y0 + d.y); }); |
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} |
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var stack = d3.layout.stack() |
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.values(function(d) { return d.values; }); |
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var svg = d3.select("body").append("svg") |
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.attr("width", width + margin.left + margin.right) |
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.attr("height", height + margin.top + margin.bottom) |
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.append("g") |
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.attr("transform", "translate(" + margin.left + "," + margin.top + ")"); |
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d3.tsv("data.tsv", function(error, data) { |
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color.domain(d3.keys(data[0]).filter(function(key) { return key !== "date"; })); |
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data.forEach(function(d) { |
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d.date = parseDate(d.date); |
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}); |
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var browsers = stack(color.domain().map(function(name) { |
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return { |
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name: name, |
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values: data.map(function(d) { |
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return {date: d.date, y: d[name] / 100}; |
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}) |
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}; |
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})); |
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x.domain(d3.extent(data, function(d) { return d.date; })); |
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var browser = svg.selectAll(".browser") |
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.data(browsers) |
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.enter().append("g") |
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.attr("class", "browser"); |
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browser.append("path") |
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.attr("class", "area") |
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.attr("d", function(d) { return line(d.values); }) |
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.style("stroke", function(d) { return color(d.name); }) |
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.style("fill", function(d) { return color(d.name); }) |
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browser.append("text") |
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.datum(function(d) { return {name: d.name, value: d.values[d.values.length - 1]}; }) |
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.attr("transform", function(d) { return "translate(" + x(d.value.date) + "," + y(d.value.y) + ")"; }) |
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.attr("x", 3) |
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.attr("dy", ".35em") |
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.style("fill", function(d) { return color(d.name); }) |
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.text(function(d) { return d.name; }); svg.append("g") |
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.attr("class", "x axis") |
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.attr("transform", "translate(0," + height + ")") |
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.call(xAxis); |
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svg.append("g") |
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.attr("class", "y axis") |
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.call(yAxis); |
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}); |
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var is_area_plot = false; |
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function transition() { |
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var duration = 2000; |
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var browser = svg.selectAll(".browser") |
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var transition = browser.transition() |
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.delay(function(d, i) { return i * 1000; }) |
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.duration(duration); |
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var postTransition = transition.transition(); |
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if (!is_area_plot) { |
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transition.selectAll("path") |
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.attrTween("d", shapeTween(line_to_stacked, 1)); |
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transition.selectAll("text") |
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.attr("transform", function(d) { return "translate(" + x(d.value.date) + "," + y(d.value.y0 + d.value.y) + ")"; }); |
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postTransition.selectAll("path") |
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.attrTween("d", shapeTween(area_to_stacked, 1)) |
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.style("stroke-opacity", 0.0); |
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postTransition.selectAll("text") |
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.attr("transform", function(d) { return "translate(" + x(d.value.date) + "," + y(d.value.y0 + d.value.y / 2) + ")"; }); |
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} else { |
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transition.selectAll("path") |
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.style("stroke-opacity", 1.0) |
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.attrTween("d", shapeTween(area_to_stacked, 0)); |
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transition.selectAll("text") |
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.attr("transform", function(d) { return "translate(" + x(d.value.date) + "," + y(d.value.y0 + d.value.y) + ")"; }); |
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postTransition.selectAll("path") |
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.attrTween("d", shapeTween(line_to_stacked, 0)); |
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postTransition.selectAll("text") |
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.attr("transform", function(d) { return "translate(" + x(d.value.date) + "," + y(d.value.y) + ")"; }); |
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} |
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is_area_plot = !is_area_plot; |
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} |
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function shapeTween(shape, direction) { |
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return function(d, i, a) { |
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return function(t) { |
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return shape(direction ? t : 1.0 - t)(d.values); |
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}; |
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}; |
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} |
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</script> |
