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September 12, 2019 06:11
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basic pie
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license: mit |
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<!DOCTYPE html> | |
<head> | |
<meta charset="utf-8"> | |
<script src="https://d3js.org/d3.v5.min.js"></script> | |
<style> | |
body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; } | |
</style> | |
</head> | |
<body> | |
<svg width="300" height="300"> </svg> | |
<script> | |
var data = { | |
labels: ['a', 'b', 'c', 'd'], | |
values: [1, 2, 3, 4] | |
}; | |
// var data = [2, 4, 8, 10]; | |
var svg = d3.select("svg"), | |
width = svg.attr("width"), | |
height = svg.attr("height"), | |
radius = Math.min(width, height) / 2, | |
g = svg.append("g").attr("transform", "translate(" + width / 2 + "," + height / 2 + ")"); | |
var color = d3.scaleOrdinal(['#4daf4a','#377eb8','#ff7f00','#984ea3','#e41a1c']); | |
// Generate the pie | |
var pie = d3.pie(); | |
// Generate the arcs | |
var arc = d3.arc() | |
.innerRadius(0) | |
.outerRadius(radius); | |
//Generate groups | |
var arcs = g.selectAll("arc") | |
.data(pie(data.values)) | |
.enter() | |
.append("g") | |
.attr("class", "arc") | |
//Draw arc paths | |
arcs.append("path") | |
.attr("fill", function(d, i) { | |
return color(i); | |
}) | |
.attr("d", arc); | |
</script> | |
</body> | |
</body> |
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