/* ------------------------------------------------------------------------------ * * # D3.js - multi series line chart * * Demo d3.js multi series line chart setup with .tsv data source * * Version: 1.0 * Latest update: August 1, 2015 * * ---------------------------------------------------------------------------- */ $(function () { // Initialize chart lineBasic('#d3-line-multi-series', 400); // Chart setup function lineBasic(element, height) { // Basic setup // ------------------------------ // Define main variables var d3Container = d3.select(element), margin = {top: 5, right: 100, bottom: 20, left: 40}, width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right, height = height - margin.top - margin.bottom - 5; // Format data var parseDate = d3.time.format("%Y%m%d").parse; // Colors var color = d3.scale.category10(); // Construct scales // ------------------------------ // Horizontal var x = d3.time.scale() .range([0, width]); // Vertical var y = d3.scale.linear() .range([height, 0]); // Create axes // ------------------------------ // Horizontal var xAxis = d3.svg.axis() .scale(x) .orient("bottom") .ticks(5) .tickFormat(d3.time.format("%b")); // Vertical var yAxis = d3.svg.axis() .scale(y) .orient("left"); // Create chart // ------------------------------ // Add SVG element var container = d3Container.append("svg"); // Add SVG group var svg = container .attr("width", width + margin.left + margin.right) .attr("height", height + margin.top + margin.bottom) .append("g") .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); // Construct chart layout // ------------------------------ // Line var line = d3.svg.line() .interpolate("basis") .x(function(d) { return x(d.date); }) .y(function(d) { return y(d.temperature); }); // Load data // ------------------------------ d3.tsv("assets/demo_data/d3/lines/lines_multi_series.tsv", function(error, data) { // Pull out values data.forEach(function(d) { d.date = parseDate(d.date); }); // Set color domains // ------------------------------ // Filter by date color.domain(d3.keys(data[0]).filter(function(key) { return key !== "date"; })); // Set colors var cities = color.domain().map(function(name) { return { name: name, values: data.map(function(d) { return {date: d.date, temperature: +d[name]}; }) } }); // Set input domains // ------------------------------ // Horizontal x.domain(d3.extent(data, function(d) { return d.date; })); // Vertical y.domain([ d3.min(cities, function(c) { return d3.min(c.values, function(v) { return v.temperature; }); }), d3.max(cities, function(c) { return d3.max(c.values, function(v) { return v.temperature; }); }) ]); // // Append chart elements // // Bind data var city = svg.selectAll(".multiline-city") .data(cities) .enter() .append("g") .attr("class", "multiline-city"); // Add line city.append("path") .attr("class", "d3-line d3-line-medium") .attr("d", function(d) { return line(d.values); }) .style("stroke", function(d) { return color(d.name); }); // Add text city.append("text") .datum(function(d) { return {name: d.name, value: d.values[d.values.length - 1]}; }) .attr("transform", function(d) { return "translate(" + x(d.value.date) + "," + y(d.value.temperature) + ")"; }) .attr("class", "d3-cities") .attr("x", 10) .attr("dy", ".35em") .text(function(d) { return d.name; }); // Append axes // ------------------------------ // Horizontal svg.append("g") .attr("class", "d3-axis d3-axis-horizontal d3-axis-strong") .attr("transform", "translate(0," + height + ")") .call(xAxis); // Vertical var verticalAxis = svg.append("g") .attr("class", "d3-axis d3-axis-vertical d3-axis-strong") .call(yAxis); // Add text label verticalAxis.append("text") .attr("transform", "rotate(-90)") .attr("y", 10) .attr("dy", ".71em") .style("text-anchor", "end") .style("fill", "#999") .style("font-size", 12) .text("Temperature (ºF)"); }) // Resize chart // ------------------------------ // Call function on window resize $(window).on('resize', resize); // Call function on sidebar width change $('.sidebar-control').on('click', resize); // Resize function // // Since D3 doesn't support SVG resize by default, // we need to manually specify parts of the graph that need to // be updated on window resize function resize() { // Layout variables width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right; // Layout // ------------------------- // Main svg width container.attr("width", width + margin.left + margin.right); // Width of appended group svg.attr("width", width + margin.left + margin.right); // Axes // ------------------------- // Horizontal range x.range([0, width]); // Horizontal axis svg.selectAll('.d3-axis-horizontal').call(xAxis); // Chart elements // ------------------------- // Line path svg.selectAll('.d3-line').attr("d", function(d) { return line(d.values); }); // Text svg.selectAll('.d3-cities').attr("transform", function(d) { return "translate(" + x(d.value.date) + "," + y(d.value.temperature) + ")"; }) } } });