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271 lines
8.1 KiB
271 lines
8.1 KiB
/* ------------------------------------------------------------------------------ |
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* |
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* # D3.js - bars with simple interaction |
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* |
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* Demo d3.js bar chart setup with animated data source change |
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* |
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* Version: 1.0 |
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* Latest update: August 1, 2015 |
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* |
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* ---------------------------------------------------------------------------- */ |
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$(function () { |
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// Create Uniform checkbox |
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$(".toggle-dataset").uniform(); |
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// Initialize chart |
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interaction('#d3-simple-interaction', 400); |
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// Chart setup |
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function interaction(element, height) { |
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// Basic setup |
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// ------------------------------ |
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// Define main variables |
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var d3Container = d3.select(element), |
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margin = {top: 5, right: 20, bottom: 20, left: 10}, |
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width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right, |
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height = height - margin.top - margin.bottom - 5; |
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// Demo data set |
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var dataset = [40.5, 33.1, 31.6, 31.0, 29.9, 28.9, 25.2, 25.2, 24.8, 24.3, 24.0, 22.6, 20.5, 19.5, 19.0, 18.9, 18.8, 18.5, 18.4, 17.6, 17.1]; |
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// Construct scales |
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// ------------------------------ |
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// Horizontal |
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var x = d3.scale.ordinal() |
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.domain(d3.range(dataset.length)) |
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.rangeRoundBands([0, width], 0.05); |
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// Vertical |
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var y = d3.scale.linear() |
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.domain([0, d3.max(dataset)]) |
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.range([0, height]); |
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// Colors |
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var colors = d3.scale.category20(); |
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// Create axes |
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// ------------------------------ |
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// Horizontal |
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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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// Create chart |
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// ------------------------------ |
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// Add SVG element |
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var container = d3Container.append("svg"); |
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// Add SVG group |
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var svg = container |
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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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// Add tooltip |
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// ------------------------------ |
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// Create tooltip |
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var tip = d3.tip() |
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.attr('class', 'd3-tip') |
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.offset([-10, 0]) |
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.html(function(d) { return d }) |
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// Initialize tooltip |
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svg.call(tip); |
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// |
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// Append chart elements |
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// |
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// Append bars |
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// ------------------------------ |
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// Add bars |
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var drawBars = svg.selectAll(".d3-bar") |
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.data(dataset) |
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.enter() |
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.append("rect") |
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.attr("class", "d3-bar") |
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.attr("x", function(d, i) { return x(i) }) |
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.attr("width", x.rangeBand()) |
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.attr("height", 0) |
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.attr("y", height) |
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.attr("fill", function(d, i) { return colors(i); }) |
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.style("cursor", "pointer") |
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.on('mouseover', tip.show) |
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.on('mouseout', tip.hide) |
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// Add bar transition |
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drawBars.transition() |
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.delay(200) |
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.duration(1000) |
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.attr("height", function(d) { return y(d) }) |
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.attr("y", function(d) { return height - y(d) }) |
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// Add text labels |
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var drawLabels = svg.selectAll(".value-label") |
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.data(dataset) |
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.enter() |
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.append("text") |
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.attr("class", "value-label") |
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.attr("x", function(d, i) { return x(i) + x.rangeBand() / 2 }) |
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.attr("y", function(d) { return height - y(d) + 25; }) |
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.style('opacity', 0) |
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.style("text-anchor", "middle") |
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.style("fill", "white") |
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.text(function(d) {return d;}); |
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// Add text label transition |
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drawLabels.transition() |
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.delay(1000) |
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.duration(500) |
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.style('opacity', 1); |
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// Create axes |
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// ------------------------------ |
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// Horizontal |
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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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// Change data sets |
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// ------------------------------ |
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$('.toggle-dataset').on('change', function() { |
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if(this.checked) { |
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dataset = [8.4, 12.1, 25.5, 10.3, 11.7, 10.9, 13.3, 23.1, 15.4, 12.3, 17.8, 18.8, 14.7, 8.8, 11.2, 10.2, 17.1, 14.5, 11.9, 7.3, 7.4]; |
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// Update all rects |
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svg.selectAll("rect") |
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.data(dataset) |
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.transition() |
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.delay(0) |
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.duration(1000) |
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.ease('cubic-in-out') |
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.attr("y", function(d) { return height - y(d) }) |
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.attr("height", function(d) { return y(d) }) |
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.style("fill", colors) |
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// Update labels |
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var drawNewlabels = svg.selectAll("text") |
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.data(dataset) |
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.attr("x", function(d, i) {return x(i) + x.rangeBand() / 2 }) |
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.attr("y", function(d) {return height - y(d) + 25 }) |
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.style('opacity', 0) |
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.text(function(d) {return d;}); |
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// Transition |
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drawNewlabels.transition() |
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.delay(1000) |
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.duration(500) |
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.style('opacity', 1) |
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} |
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else { |
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dataset = [40.5, 33.1, 31.6, 31.0, 29.9, 28.9, 25.2, 25.2, 24.8, 24.3, 24.0, 22.6, 20.5, 19.5, 19.0, 18.9, 18.8, 18.5, 18.4, 17.6, 17.1]; |
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// Update all rects |
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svg.selectAll("rect") |
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.data(dataset) |
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.transition() |
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.delay(0) |
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.duration(1000) |
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.ease('cubic-in-out') |
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.attr("y", function(d) { return height - y(d) }) |
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.attr("height", function(d) { return y(d) }) |
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.style("fill", function(d, i) { return colors(i); }); |
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/* Update labels */ |
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var drawFirstlabels = svg.selectAll("text") |
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.data(dataset) |
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.attr("x", function(d, i) {return x(i) + x.rangeBand() / 2 }) |
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.attr("y", function(d) {return height - y(d) + 25 }) |
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.style('opacity', 0) |
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.text(function(d) {return d;}); |
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drawFirstlabels.transition() |
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.delay(1000) |
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.duration(500) |
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.style('opacity', 1); |
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} |
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}); |
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// Resize chart |
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// ------------------------------ |
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// Call function on window resize |
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$(window).on('resize', resize); |
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// Call function on sidebar width change |
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$('.sidebar-control').on('click', resize); |
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// Resize function |
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// |
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// Since D3 doesn't support SVG resize by default, |
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// we need to manually specify parts of the graph that need to |
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// be updated on window resize |
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function resize() { |
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// Layout variables |
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width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right; |
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// Layout |
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// ------------------------- |
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// Main svg width |
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container.attr("width", width + margin.left + margin.right); |
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// Width of appended group |
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svg.attr("width", width + margin.left + margin.right); |
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// Axes |
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// ------------------------- |
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// Horizontal range |
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x.rangeRoundBands([0, width], 0.05); |
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// Horizontal axis |
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svg.selectAll('.d3-axis-horizontal').call(xAxis); |
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// Chart elements |
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// ------------------------- |
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// Bars |
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svg.selectAll('.d3-bar').attr("x", function(d, i) { return x(i) }).attr("width", x.rangeBand()); |
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// Text label |
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svg.selectAll(".value-label").attr("x", function(d, i) { return x(i) + x.rangeBand() / 2 }); |
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} |
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} |
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});
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