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Stacked Nested Bar Chart
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| year | quarter | year_quarter | a | b | |
|---|---|---|---|---|---|
| 2017 | Q1 | 2017_Q1 | 5 | 10 | |
| 2017 | Q2 | 2017_Q2 | 7 | 12 | |
| 2017 | Q3 | 2017_Q3 | 8 | 13 | |
| 2017 | Q4 | 2017_Q4 | 10 | 8 | |
| 2018 | Q1 | 2018_Q1 | 9 | 12 | |
| 2018 | Q2 | 2018_Q2 | 13 | 8 | |
| 2018 | Q3 | 2018_Q3 | 14 | 6 | |
| 2018 | Q4 | 2018_Q4 | 12 | 7 | |
| 2019 | Q1 | 2019_Q1 | 7 | 13 | |
| 2019 | Q2 | 2019_Q2 | 6 | 10 | |
| 2019 | Q3 | 2019_Q3 | 15 | 7 | |
| 2019 | Q4 | 2019_Q4 | 8 | 12 |
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| <!doctype html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>Hello!</title> | |
| <link rel="stylesheet" href="style.css"> | |
| </head> | |
| <body> | |
| <h1>Example Chart</h1> | |
| <div id="chart"></div> | |
| <script src="https://d3js.org/d3.v5.min.js"></script> | |
| <script src="index.js"></script> | |
| </body> | |
| </html> |
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| //load data | |
| const load = async () => { | |
| const data = await d3.csv('data.csv', ({year, quarter, year_quarter, a, b}) => ({ | |
| year: year, quarter: quarter, year_quarter: year_quarter, a: +a, b: +b | |
| })); | |
| chart(data); | |
| } | |
| const chart = data => { | |
| //prep data | |
| const groups = d3.map(data, d => d.year_quarter).keys(); | |
| const subgroups = data.columns.slice(3); | |
| const stack = d3.stack() | |
| .keys(subgroups) | |
| (data); | |
| //setup svg | |
| const margin = {top: 25, right: 25, bottom: 50, left: 25}; | |
| const width = 1250 - margin.left - margin.right; | |
| const height = 450 - margin.top - margin.bottom; | |
| const svg = d3.select('#chart') | |
| .append('svg') | |
| .attr('width', width + margin.left + margin.right) | |
| .attr('height', height + margin.top + margin.bottom) | |
| .append('g') | |
| .attr('transform', `translate(${margin.left}, ${margin.top})`); | |
| const format = d3.format('$,d'); | |
| //setup scales | |
| const x0 = d3.scaleBand() | |
| .domain(data.map(d => d.year)) | |
| .range([0, width]) | |
| .padding(0.1); | |
| const x1 = d3.scaleBand() | |
| .domain(data.map(d => d.quarter)) | |
| .range([0, x0.bandwidth()]) | |
| .padding(0.2); | |
| const y = d3.scaleLinear() | |
| .domain([0, d3.max(data, d => d.a + d.b)]) | |
| .range([height, 0]); | |
| const z = d3.scaleOrdinal() | |
| .domain(subgroups) | |
| .range(['#BCCBDE', '#C2DDE6']); | |
| //setup axes | |
| const xAxis0 = g => g | |
| .call(d3.axisBottom(x0).tickSize(0)) | |
| .call(g => g.select('.domain').remove()); | |
| const xAxis1 = g => g | |
| .call(d3.axisBottom(x1)) | |
| .call(g => g.select('.domain').remove()); | |
| //draw | |
| const g = svg.append('g') | |
| .selectAll('g') | |
| .data(stack) | |
| .join('g') | |
| .attr('class', d => `${d.key}`) | |
| .attr('fill', d => z(d.key)); | |
| const bar = g.selectAll('rect') | |
| .data(d => d) | |
| .join('rect') | |
| .attr('class', 'rect') | |
| .attr('x', d => x0(d.data.year) + x1(d.data.quarter)) | |
| .attr('y', d => y(d[1])) | |
| .attr('width', x1.bandwidth()) | |
| .attr('height', d => y(d[0]) - y(d[1])) | |
| .attr('stroke', '#FFFFFF') | |
| .attr('stroke-width', 3); | |
| const text = g.selectAll('.label') | |
| .data(d => d) | |
| .join('text') | |
| .text(d => `${format(d[1] - d[0])}`) | |
| .attr('class', 'label') | |
| .attr('x', d => x0(d.data.year) + x1(d.data.quarter) + x1.bandwidth()/2) | |
| .attr('y', d => y(d[1]) + 20) | |
| .attr('fill', 'black') | |
| .attr('text-anchor', 'middle'); | |
| const total = svg.selectAll('.total') | |
| .data(data) | |
| .join('text') | |
| .text(d => `${format(d.a + d.b)}`) | |
| .attr('class', 'total') | |
| .attr('x', d => x0(d.year) + x1(d.quarter) + x1.bandwidth()/2) | |
| .attr('y', d => y(d.a + d.b) - 10) | |
| .attr('text-anchor', 'middle'); | |
| //draw axes | |
| const gx0 = svg.append('g') | |
| .attr('class', 'gx0') | |
| .attr('transform', `translate(0, ${height + 35})`) | |
| .call(xAxis0); | |
| const gx1 = svg.selectAll('.gx1') | |
| .data(x0.domain()) | |
| .join('g') | |
| .attr('class', 'gx1') | |
| .attr('transform', d => `translate(${x0(d)}, ${height})`) | |
| .call(xAxis1); | |
| } | |
| load(); |
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| h1 { | |
| font-family: Arial, Helvetica, sans-serif; | |
| text-align: center; | |
| text-rendering: optimizeLegibility; | |
| } | |
| svg { | |
| display: block; | |
| margin: auto; | |
| } | |
| .gx0 { | |
| font-family: Arial, Helvetica, sans-serif; | |
| font-size: 12px; | |
| shape-rendering: crispEdges; | |
| text-rendering: optimizeLegibility; | |
| } | |
| .gx1 { | |
| font-family: Arial, Helvetica, sans-serif; | |
| font-size: 12px; | |
| shape-rendering: crispEdges; | |
| text-rendering: optimizeLegibility; | |
| } | |
| .label { | |
| font-family: Arial, Helvetica, sans-serif; | |
| font-size: 12px; | |
| text-rendering: optimizeLegibility; | |
| } | |
| .total { | |
| font-family: Arial, Helvetica, sans-serif; | |
| font-size: 12px; | |
| text-rendering: optimizeLegibility; | |
| } |
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