Example of curved textPaths in arcs, based on this fiddle by Susa Merz.
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Chord Arc Labels
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
body { | |
font-family: sans-serif; | |
font-size: 40px; | |
} | |
</style> | |
<body> | |
<script src="http://d3js.org/d3.v3.js"></script> | |
<script src="http://d3js.org/colorbrewer.v1.min.js"></script> | |
<script> | |
var matrix = d3.range(6).map(function(row) { | |
return d3.range(6).map(function(col) { | |
return Math.pow(Math.random(),1.5); | |
}); | |
}); | |
var width = 960, | |
height = 500, | |
innerRadius = Math.min(width, height) * 0.4, | |
outerRadius = innerRadius + 40; | |
var fill = d3.scale.ordinal() | |
.range(colorbrewer.Spectral[6]); | |
var svg = d3.select("body").append("svg") | |
.attr("width", width) | |
.attr("height", height) | |
.append("g") | |
.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")"); | |
var chord = d3.layout.chord() | |
.padding(0.05) | |
.sortSubgroups(d3.descending) | |
.matrix(matrix); | |
svg.selectAll("path") | |
.data(chord.groups) | |
.enter().append("path") | |
.style("fill", function(d) { return fill(d.index); }) | |
.style("stroke", "black") | |
.style("opacity",0.5) | |
.attr("d", d3.svg.arc().innerRadius(innerRadius).outerRadius(outerRadius)) | |
.attr("class","arc") | |
.attr("id",function(d,i){return "group"+i;}); | |
svg.selectAll("text") | |
.data(chord.groups) | |
.enter().append("text") | |
.attr("dx", 4) | |
.attr("dy", 35) | |
.append("textPath") | |
.attr("class", "label") | |
.attr("xlink:href", function(d) { return "#group" + d.index; }) | |
.text(function(d) { return "Arc " + d.index; }) | |
.style("fill", function(d) { return d3.rgb(fill(d.index)).darker(2); }); | |
svg.append("g") | |
.attr("class", "chord") | |
.selectAll("path") | |
.data(chord.chords) | |
.enter().append("path") | |
.attr("d", d3.svg.chord().radius(innerRadius)) | |
.style("fill", function(d) { | |
var chordcolor = d3.scale.linear() | |
.range([fill(d.target.index), fill(d.source.index)]) | |
.domain([-1,1]) | |
.interpolate(d3.interpolateLab); | |
var weight = (d.source.value - d.target.value) / (d.source.value + d.target.value); | |
return chordcolor(weight); | |
}) | |
.style("stroke","black") | |
.style("opacity", 0.2); | |
d3.select(self.frameElement).style("height", height + "px"); | |
</script> |
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