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Spider chart
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license: gpl-3.0 |
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
text { | |
text-anchor: middle; | |
} | |
path { | |
stroke: white; | |
} | |
.score circle, | |
.connector path { | |
stroke-width: 2; | |
stroke: black; | |
} | |
.connector path { | |
fill: none; | |
} | |
.label path { | |
stroke-width: 10; | |
} | |
</style> | |
<body> | |
<script src="https://d3js.org/d3.v4.min.js"></script> | |
<script> | |
var width = 960, | |
height = 500, | |
radius = Math.min(width, height) / 2 - 40, | |
scaleRadius = radius - 20 | |
var data = [ | |
{ lable: 'A1', score: 1 }, | |
{ lable: 'A2', score: 1 }, | |
{ lable: 'A3', score: 0.6 }, | |
{ lable: 'B1', score: 0.9 }, | |
{ lable: 'B2', score: 0.9 }, | |
{ lable: 'B3', score: 0.8 }, | |
{ lable: 'C1', score: 0.7 }, | |
{ lable: 'C2', score: 0.4 }, | |
{ lable: 'C3', score: 0.9 }, | |
{ lable: 'D1', score: 0.8 }, | |
{ lable: 'D2', score: 0.7 }, | |
{ lable: 'D3', score: 0.6 } | |
]; | |
var ticColors = [ | |
{ to: 0.2, from: 0, color: '#EFFFCD' }, | |
{ to: 0.4, from: 0.2, color: '#CBE86B' }, | |
{ to: 0.6, from: 0.4, color: '#FF9C5B' }, | |
{ to: 0.8, from: 0.6, color: '#F5634A' }, | |
{ to: 1, from: 0.8, color: '#E84A5F' } | |
] | |
var color = d3.scaleOrdinal() | |
.range(["#FE4365", "#FC9D9A", "#F9CDAD", "#C8C8A9", "#83AF9B"]); | |
var arc = d3.arc() | |
.outerRadius(radius) | |
.innerRadius(radius - 20); | |
var pie = d3.pie() | |
.sort(null) | |
.value(function (d) { | |
return 1 //evenly space all | |
}); | |
var spiderEdge = function (data) { | |
return pie(data) | |
.map(function (d, i) { | |
var edge = { | |
x: d.data.score * scaleRadius * Math.sin((d.endAngle + d.startAngle) / 2), | |
y: -1 * d.data.score * scaleRadius * Math.cos((d.endAngle + d.startAngle) / 2) | |
} | |
return { data: data[i], edge: edge }//remove edge key | |
}) | |
} | |
var svg = d3.select("body").append("svg") | |
.attr("width", width) | |
.attr("height", height) | |
.append("g") | |
.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")"); | |
//Draw concentric tics | |
var tics = svg | |
.append('g') | |
.attr("class", "tic") | |
.selectAll("g") | |
.data(ticColors.reverse()) | |
.enter() | |
.append("circle") | |
.attr("r", function (d) { | |
return scaleRadius * d.to | |
}) | |
.style("fill", function (d) { | |
return d.color | |
}) | |
//Draw labels | |
var label = svg | |
.append('g') | |
.attr("class", "label") | |
.selectAll("g") | |
.data(pie(data)) | |
.enter() | |
label.append("path") | |
.attr("d", function (d) { return arc(d) }) | |
.style("fill", function (d, i) { | |
return color(i); | |
}) | |
//Draw labels text | |
label.append("text") | |
.attr("x", function (d) { return radius * Math.sin((d.endAngle + d.startAngle) / 2) }) | |
.attr("y", function (d) { return -1 * radius * Math.cos((d.endAngle + d.startAngle) / 2) }) | |
.text(function (d) { return d.data.lable }) | |
//Draw connecting lines between score points | |
var line = d3.line() | |
.x(function (d) { return d.edge.x }) | |
.y(function (d) { return d.edge.y }) | |
svg.append("g") | |
.attr("class", "connector") | |
.append("path") | |
.attr("d", line(spiderEdge(data)) + 'Z') //Close loop | |
//Draw score points | |
svg.append("g") | |
.attr("class", "score") | |
.selectAll("g") | |
.data(spiderEdge(data)) | |
.enter() | |
.append("circle") | |
.attr("cx", function (d) { | |
return d.edge.x | |
}) | |
.attr("cy", function (d) { | |
return d.edge.y | |
}) | |
.attr("r", function (d) { | |
return 5 | |
}) | |
.style("fill", function (d, i) { | |
return color(i); | |
}) | |
</script> |
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