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February 28, 2024 14:57
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Radial Bar Chart built with D3
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| license: gpl-3.0 |
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| name | value | |
|---|---|---|
| Jan | 432 | |
| Feb | 340 | |
| Mar | 382 | |
| Apr | 398 | |
| May | 410 |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>Household monthly electricity consumption</title> | |
| <style> | |
| body { | |
| font: 12px sans-serif; | |
| } | |
| svg { | |
| margin: 0px auto; | |
| display: block; | |
| } | |
| path.arc { | |
| opacity: 0.9; | |
| transition: opacity 0.5s; | |
| } | |
| path.arc:hover { | |
| opacity: 0.7; | |
| } | |
| .axis line, .axis circle { | |
| stroke: #cccccc; | |
| stroke-width: 1px | |
| } | |
| .axis circle { | |
| fill: none; | |
| } | |
| .r.axis text { | |
| text-anchor: end | |
| } | |
| .tooltip { | |
| position: absolute; | |
| display: none; | |
| background: rgba(0, 0, 0, 0.6); | |
| border-radius: 3px; | |
| box-shadow: -3px 3px 15px #888; | |
| color: white; | |
| padding: 6px; | |
| } | |
| </style> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| </head> | |
| <body> | |
| <script> | |
| const width = 960, | |
| height = 500, | |
| chartRadius = height / 2 - 40; | |
| const color = d3.scaleOrdinal(d3.schemeCategory10); | |
| let svg = d3.select('body').append('svg') | |
| .attr('width', width) | |
| .attr('height', height) | |
| .append('g') | |
| .attr('transform', 'translate(' + width / 2 + ',' + height / 2 + ')'); | |
| let tooltip = d3.select('body').append('div') | |
| .attr('class', 'tooltip'); | |
| const PI = Math.PI, | |
| arcMinRadius = 10, | |
| arcPadding = 10, | |
| labelPadding = -5, | |
| numTicks = 10; | |
| d3.csv('energy.csv', (error, data) => { | |
| let scale = d3.scaleLinear() | |
| .domain([0, d3.max(data, d => d.value) * 1.1]) | |
| .range([0, 2 * PI]); | |
| let ticks = scale.ticks(numTicks).slice(0, -1); | |
| let keys = data.map((d, i) => d.name); | |
| //number of arcs | |
| const numArcs = keys.length; | |
| const arcWidth = (chartRadius - arcMinRadius - numArcs * arcPadding) / numArcs; | |
| let arc = d3.arc() | |
| .innerRadius((d, i) => getInnerRadius(i)) | |
| .outerRadius((d, i) => getOuterRadius(i)) | |
| .startAngle(0) | |
| .endAngle((d, i) => scale(d)) | |
| let radialAxis = svg.append('g') | |
| .attr('class', 'r axis') | |
| .selectAll('g') | |
| .data(data) | |
| .enter().append('g'); | |
| radialAxis.append('circle') | |
| .attr('r', (d, i) => getOuterRadius(i) + arcPadding); | |
| radialAxis.append('text') | |
| .attr('x', labelPadding) | |
| .attr('y', (d, i) => -getOuterRadius(i) + arcPadding) | |
| .text(d => d.name); | |
| let axialAxis = svg.append('g') | |
| .attr('class', 'a axis') | |
| .selectAll('g') | |
| .data(ticks) | |
| .enter().append('g') | |
| .attr('transform', d => 'rotate(' + (rad2deg(scale(d)) - 90) + ')'); | |
| axialAxis.append('line') | |
| .attr('x2', chartRadius); | |
| axialAxis.append('text') | |
| .attr('x', chartRadius + 10) | |
| .style('text-anchor', d => (scale(d) >= PI && scale(d) < 2 * PI ? 'end' : null)) | |
| .attr('transform', d => 'rotate(' + (90 - rad2deg(scale(d))) + ',' + (chartRadius + 10) + ',0)') | |
| .text(d => d); | |
| //data arcs | |
| let arcs = svg.append('g') | |
| .attr('class', 'data') | |
| .selectAll('path') | |
| .data(data) | |
| .enter().append('path') | |
| .attr('class', 'arc') | |
| .style('fill', (d, i) => color(i)) | |
| arcs.transition() | |
| .delay((d, i) => i * 200) | |
| .duration(1000) | |
| .attrTween('d', arcTween); | |
| arcs.on('mousemove', showTooltip) | |
| arcs.on('mouseout', hideTooltip) | |
| function arcTween(d, i) { | |
| let interpolate = d3.interpolate(0, d.value); | |
| return t => arc(interpolate(t), i); | |
| } | |
| function showTooltip(d) { | |
| tooltip.style('left', (d3.event.pageX + 10) + 'px') | |
| .style('top', (d3.event.pageY - 25) + 'px') | |
| .style('display', 'inline-block') | |
| .html(d.value); | |
| } | |
| function hideTooltip() { | |
| tooltip.style('display', 'none'); | |
| } | |
| function rad2deg(angle) { | |
| return angle * 180 / PI; | |
| } | |
| function getInnerRadius(index) { | |
| return arcMinRadius + (numArcs - (index + 1)) * (arcWidth + arcPadding); | |
| } | |
| function getOuterRadius(index) { | |
| return getInnerRadius(index) + arcWidth; | |
| } | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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Nice job! Never seen this chart before.
Would you be so kind to add some extra touch of awesomeness by making the following: