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Radial Bar Chart built with D3
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license: gpl-3.0 |
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year | value | |
---|---|---|
1960 | 0.659 | |
1970 | 0.619 | |
1980 | 0.589 | |
1990 | 0.569 | |
2000 | 0.547 | |
2009 | 0.506 |
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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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