Radial Arc Diagram
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license: gpl-3.0 |
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
circle { | |
fill: #000; | |
stroke: #fff; | |
stroke-width: 2px; | |
} | |
path { | |
fill: none; | |
stroke: #999; | |
stroke-width: 1.5px; | |
} | |
text { | |
font: bold 10px sans-serif; | |
} | |
</style> | |
<body> | |
<script src="//d3js.org/d3.v3.min.js"></script> | |
<script> | |
var width = 960, | |
height = 500, | |
radius = 240; | |
var angle = d3.scale.ordinal() | |
.rangePoints([0, 360], 1); | |
var svg = d3.select("body").append("svg") | |
.attr("width", width) | |
.attr("height", height) | |
.append("g") | |
.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")"); | |
d3.json("network.json", function(error, nodes) { | |
if (error) throw error; | |
var nodeByName = d3.map(), | |
links = []; | |
nodes.forEach(function(d) { nodeByName.set(d.name, d); }); | |
nodes.forEach(function(source) { | |
source.connections.forEach(function(target) { | |
links.push({source: source, target: nodeByName.get(target)}); | |
}); | |
}); | |
angle.domain(nodes.map(function(d) { return d.name; })); | |
var link = svg.append("g") | |
.attr("class", "links") | |
.selectAll("path") | |
.data(links) | |
.enter().append("path") | |
.attr("d", curve); | |
var node = svg.append("g") | |
.attr("class", "nodes") | |
.selectAll("g") | |
.data(nodes) | |
.enter().append("g") | |
.attr("transform", function(d) { return "rotate(" + angle(d.name) + ")translate(" + radius + ",0)"; }); | |
node.append("circle") | |
.attr("r", 5); | |
node.append("text") | |
.attr("dy", ".35em") | |
.attr("x", 6) | |
.text(function(d) { return d.name; }) | |
.filter(function(d) { return (angle(d.name) + 90) % 360 > 180; }) // flipped | |
.attr("x", -6) | |
.attr("transform", "rotate(-180)") | |
.style("text-anchor", "end"); | |
}); | |
function curve(link) { | |
var a0 = angle(link.source.name) / 180 * Math.PI, | |
a1 = angle(link.target.name) / 180 * Math.PI, | |
x0 = Math.cos(a0) * radius, y0 = Math.sin(a0) * radius, | |
x1 = Math.cos(a1) * radius, y1 = Math.sin(a1) * radius, | |
dx = x0 - x1, | |
dy = y0 - y1, | |
l = Math.sqrt(dx * dx + dy * dy); | |
return "M" + x0 + "," + y0 | |
+ "A" + l * 2 + "," + l * 2 + " 0 0 1 " | |
+ x1 + "," + y1; | |
} | |
</script> |
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[ | |
{"name": "Bob", "connections": ["Jane", "Tom", "Sue"]}, | |
{"name": "Jane", "connections": ["Bob", "Sue"]}, | |
{"name": "Sue", "connections": ["Tom", "Bob", "Jane", "Tom"]}, | |
{"name": "Tom", "connections": []} | |
] |
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