/* ------------------------------------------------------------------------------ * * # D3.js - horizontal bar chart * * Demo d3.js horizontal bar chart setup with .csv data source * * Version: 1.0 * Latest update: August 1, 2015 * * ---------------------------------------------------------------------------- */ $(function () { // Initialize chart barVertical('#d3-bar-horizontal', 400); // Chart setup function barVertical(element, height) { // Basic setup // ------------------------------ // Define main variables var d3Container = d3.select(element), margin = {top: 20, right: 10, bottom: 5, left: 40}, width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right, height = height - margin.top - margin.bottom - 5, n = 12; // Format data var format = d3.format(",.0f"); // Construct scales // ------------------------------ // Horizontal var x = d3.scale.linear() .range([0, width]); // Verticals var y = d3.scale.ordinal() .rangeRoundBands([0, height], .1); // Colors var colors = d3.scale.category20(); // Create axes // ------------------------------ // Horizontal var xAxis = d3.svg.axis() .scale(x) .orient("top") .tickSize(-height); // Vertical var yAxis = d3.svg.axis() .scale(y) .orient("left") .tickSize(5); // 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 + ")"); // Load data // ------------------------------ d3.csv("assets/demo_data/d3/bars/bars_horizontal.csv", function(data) { // Parse numbers, and sort by value. data.forEach(function(d) { d.value = +d.value; }); data.sort(function(a, b) { return b.value - a.value; }); // Set input domains // ------------------------------ // Horizontal x.domain([0, d3.max(data, function(d) { return d.value; })]); // Verticals y.domain(data.map(function(d) { return d.name; })); // // Append chart elements // // Append axes // ------------------------------ // Horizontal svg.append("g") .attr("class", "d3-axis d3-axis-horizontal d3-axis-strong") .call(xAxis); // Vertical svg.append("g") .attr("class", "d3-axis d3-axis-vertical d3-axis-strong") .call(yAxis); // Remove lines svg.selectAll(".d3-axis line, .d3-axis path").attr("stroke-width", 0); // Append bars // ------------------------------ // Group bars var bar = svg.selectAll(".d3-bar-group") .data(data) .enter() .append("g") .attr("class", "d3-bar-group") .attr("fill", function(d, i) { return colors(i); }) .attr("transform", function(d) { return "translate(0," + y(d.name) + ")"; }); // Add bar bar.append("rect") .attr("class", "d3-bar") .attr("width", function(d) { return x(d.value); }) .attr("height", y.rangeBand()); // Add text label bar.append("text") .attr("class", "d3-label-value") .attr("x", function(d) { return x(d.value); }) .attr("y", y.rangeBand() / 2) .attr("dx", -10) .attr("dy", ".35em") .style("text-anchor", "end") .style("fill", "#fff") .style("font-size", 12) .text(function(d) { return format(d.value); }); }); // 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-bar').attr("width", function(d) { return x(d.value); }) // Text label svg.selectAll('.d3-label-value').attr("x", function(d) { return x(d.value); }); } } });