Pie chart with rotated pie wedge labels.
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May 28, 2019 12:15
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Pie chart with rotated wedge labels
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<script src="http://d3js.org/d3.v3.min.js"></script> | |
<script> | |
var piecolors = d3.scale.category20c(); | |
var w = 600, | |
h = 460, | |
r = (Math.min(w, h) - 50) / 2; | |
d3.csv("makes.csv", function(error, data) { | |
var svgPie = d3.select("#chart").append("svg") | |
.attr("width", w) | |
.attr("height", h) | |
.append("g") | |
.attr("transform", "translate(" + w / 2 + "," + h / 2 + ")"); | |
var arc = d3.svg.arc() | |
.outerRadius(r - 12) | |
.innerRadius(2); | |
var labelArc = d3.svg.arc() | |
.outerRadius(r + 20) | |
.innerRadius(r-5); | |
var pie = d3.layout.pie() | |
.sort(null) | |
.value(function(d) { return d.cars; }); | |
var pie = svgPie.selectAll(".arc") | |
.data(pie(data)) | |
.enter().append("g") | |
.attr("class", "arc"); | |
pie.append("path") | |
.attr("d", arc) | |
.style("fill", function(d) { return piecolors(d.data.make); }); | |
pie.append("text") | |
.attr("transform", function(d) { | |
var midAngle = d.endAngle < Math.PI ? d.startAngle/2 + d.endAngle/2 : d.startAngle/2 + d.endAngle/2 + Math.PI ; | |
return "translate(" + labelArc.centroid(d)[0] + "," + labelArc.centroid(d)[1] + ") rotate(-90) rotate(" + (midAngle * 180/Math.PI) + ")"; }) | |
.attr("dy", ".35em") | |
.attr('text-anchor','middle') | |
.text(function(d) { return (d.data.cars > 10000) ? d.data.make : null; }); | |
}); | |
</script> | |
<style> | |
body { | |
font: 10px 'Open sans', sans-serif; | |
} | |
.line { | |
fill: none; | |
stroke: black; | |
stroke-width: 1.2px; | |
} | |
div#chart {width: 100%;} | |
</style> | |
<body> | |
<div id="chart"></div> | |
</body> |
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make | cars | |
---|---|---|
Ford | 148318 | |
Chevy | 147864 | |
Toyota | 139514 | |
Honda | 71312 | |
Subaru | 70097 | |
Dodge | 60532 | |
GMC | 57995 | |
Jeep | 52065 | |
Nissan | 44745 | |
Hyundai | 32127 | |
Volkswagen | 28140 | |
Chrysler | 22181 | |
Buick | 20454 | |
Kia | 17674 | |
Volvo | 17248 | |
Mazda | 15021 | |
Pontiac | 14879 | |
Mercedes | 9983 | |
Saturn | 9391 | |
Others | 77035 |
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