horizontal bars

forked from areologist's block: axes and margins

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

forked from areologist's block: column chart

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.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;
      padding: 15px;
      width: 240px;
    }
    .chart svg {
      background: white;
      border: 1px solid #ddd;
    }
    .bar {
      fill: #0f6ba8;
    }
    .axis {
      fill: #888;
      text-anchor: middle;
      font-size: 15px;
      font-family: Arial;
    }
    .axis g:first-of-type {
      text-anchor: start;
    }
  </style>
</head>
<body>
  <div class="chart"></div>

const data = [
      { amount: 15900, category: 'Travel & Entertainment' },
      { amount: 12090, category: 'Donations & Gifts' },
      { amount: 8670, category: 'COGS' },
      { amount: 2340, category: 'Other Categories' }
    ];

const svg = d3.select('.chart')
      .append('svg')
        .attr('width', width + margin.left + margin.right)
        .attr('height', height + margin.top + margin.bottom)
				.call(responsivefy)
      .append('g')
        .attr('transform', 'translate(' + margin.left + ', ' + margin.top + ')');

const xScale = d3.scaleLinear()
    	.domain([0, 20000])
    	.range([0, width])
    	.nice();

const yScale = d3.scaleBand()
    	.padding(0.2)
    	.domain(data.map(d => d.category))
    	.range([0, height]);

svg.selectAll('rect')
    	.data(data)
    	.enter()
    	.append('rect')
    	.attr('class', 'bar')
    	.attr('x', 0)
    	.attr('y', d => yScale(d.category))
    	.attr('width', d => xScale(d.amount))
    	.attr('height', yScale.bandwidth());
    
    const topScale = d3.scaleLinear()
    	.domain([0, 50])
    	.range([0, width]);

buildTopAxis([0, 25, 50], topScale);
    buildBottomAxis([0, 10000, 20000], xScale);

function buildTopAxis(values, scale) {
      console.log('scale: ', scale(0));
      const enter = svg.append('g')
      	.attr('class', 'axis')
      	.selectAll('text')
      	.data(values)
      	.enter()
      	.append('g')
	      .attr('transform', d => `translate(${scale(d)}, 0)`);
      
      enter.append('text')
      	.text(d => d3.format('.0%')(d/100))
      	.attr('x', 0)
      	.attr('y', 0)
      	.attr('dy', '0.1em');

}

function buildBottomAxis(values, scale) {
      const g = svg.append('g')
      	.attr('class', 'axis')
      	.selectAll('g')
      	.data(values)
      	.enter()
      	.append('g')
      	.append('text')
      	.text(d => d3.format('$,.0f')(d))
      	.attr('x', d => scale(d))
      	.attr('y', 0)
      	.attr('dy', '0.7em');

g.attr('transform', `translate(0, ${height})`);
    }

///////

function responsivefy(svg) {
      // get container + svg aspect ratio
      var container = d3.select(svg.node().parentNode),
          width = parseInt(svg.style("width")),
          height = parseInt(svg.style("height")),
          aspect = width / height;

// add viewBox and preserveAspectRatio properties,
      // and call resize so that svg resizes on inital page load
      svg.attr("viewBox", "0 0 " + width + " " + height)
          .attr("preserveAspectRatio", "xMinYMid")
          .call(resize);

// to register multiple listeners for same event type,
      // you need to add namespace, i.e., 'click.foo'
      // necessary if you call invoke this function for multiple svgs
      // api docs: https://github.com/mbostock/d3/wiki/Selections#on
      d3.select(window).on("resize." + container.attr("id"), resize);

// get width of container and resize svg to fit it
      function resize() {
          var targetWidth = parseInt(container.style("width"));
          svg.attr("width", targetWidth);
          svg.attr("height", Math.round(targetWidth / aspect));
      }
    }
  </script>
</body>

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