stacked bar experiment 2

Built with blockbuilder.org

forked from areologist's block: axes and margins

forked from areologist's block: axes and margins - responsive

forked from areologist's block: column chart

forked from areologist's block: stacked bar experiment

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
    .chart {
      background-color: #f6fafc;
      border: 1px solid #333;
    }
    .segment {
      opacity: 0.7;
    }
    .segment:hover {
      opacity: 1;
    }
    .tick text {
      font-size: 10px;
    }
  </style>
</head>
<body>
  <div class="chart"></div>

const data = [
      {subject: 'mathematics', freshman: 63, sophomore: 19, junior: 45, senior: 94},
      {subject: 'geography', freshman: 82, sophomore: 8, junior: 46, senior: 60},
      {subject: 'spelling', freshman: 74, sophomore: 74, junior: 74, senior: 74},
      {subject: 'reading', freshman: 97, sophomore: 12, junior: 34, senior: 17},
      {subject: 'science', freshman: 52, sophomore: 52, junior: 52, senior: 52}
    ];

const colors = ['#333', '#666', '#999', '#ccc'];
    const groups = ['freshman', 'sophomore', 'junior', 'senior'];

const layout = d3.stack().keys(groups)(data);

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 xScale = d3.scaleBand()
    	.padding(0.1)
    	.domain(data.map(d => d.subject))
    	.range([0, width]);
    
    const yMax = 300;

const yScale = d3.scaleLinear()
    	.domain([0, yMax])
    	.range([height, 0]);

const yAxis = d3.axisLeft(yScale).ticks(10);
    svg.append('g').call(yAxis);

const xAxis = d3.axisBottom(xScale);

svg.append('g')
    	.attr('transform', `translate(0, ${height})`)
      .call(xAxis)
    	.selectAll('text')
    	.style('text-anchor', 'end')
    	.attr('transform', 'rotate(-45)');

svg
    	.selectAll('.group')
    	.data(layout)
    	.enter()
    	.append('g')
    	.attr('class', 'group')
    	.attr('name', ({key}) => key)
    	.attr('fill', (d, i) => colors[i])
      .selectAll('.segment')
    	.data(d => d)
    	.enter()
    	.append('rect')
    	.attr('class', 'segment')
    	.attr('x', ({data: {subject}}) => xScale(subject))
    	.attr('y', ([y, h]) => yScale(h))
      .attr('width', xScale.bandwidth())
      .attr('height', ([y, h]) => height - yScale(h - y));
  </script>
</body>

https://d3js.org/d3.v4.min.js

https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.min.js