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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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.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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.x.axis path { |
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display: none; |
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} |
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.line { |
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fill: none; |
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stroke: steelblue; |
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stroke-width: 1.5px; |
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} |
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</style> |
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<body> |
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<script src="//d3js.org/d3.v3.min.js"></script> |
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<script> |
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var margin = {top: 20, right: 80, bottom: 60, 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("%m/%d/%Y").parse; |
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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.category10(); |
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var xAxis = d3.svg.axis() |
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.scale(x) |
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.ticks(d3.time.months) |
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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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var line = d3.svg.line() |
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.interpolate("basis") |
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.x(function(d) { return x(d.date); }) |
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.y(function(d) { return y(d.temperature); }); |
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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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if (error) throw error; |
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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 cities = 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, temperature: +d[name]}; |
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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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y.domain([ |
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d3.min(cities, function(c) { return d3.min(c.values, function(v) { return v.temperature; }); }), |
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d3.max(cities, function(c) { return d3.max(c.values, function(v) { return v.temperature; }); }) |
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]); |
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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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.selectAll("text") |
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.style("text-anchor", "end") |
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.attr("transform", function(d){ |
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return "rotate(-45)"}) |
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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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.append("text") |
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.attr("transform", "rotate(-90)") |
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.attr("y", 6) |
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.attr("dy", ".71em") |
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.style("text-anchor", "end") |
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.text("Number of Cases"); |
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var city = svg.selectAll(".city") |
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.data(cities) |
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.enter().append("g") |
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.attr("class", "city"); |
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city.append("path") |
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.attr("class", "line") |
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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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city.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.temperature) + ")"; }) |
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.attr("x", 3) |
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.attr("dy", ".35em") |
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.text(function(d) { return d.name; }); |
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}); |
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</script> |
