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272 lines
8.1 KiB
272 lines
8.1 KiB
3 years ago
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/* ------------------------------------------------------------------------------
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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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