Based on Mike Bostock's force-directed graph example showing character co-occurence in Les Misérables, this gist shows how to toggle between the animated force-directed graph and a circle formation akin to a chord diagram.
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July 12, 2016 06:57
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Force Directed Graph Toggle to Circle
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license: gpl-3.0 |
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
#controls { | |
position: absolute; | |
width: 940px; | |
padding: 10px; | |
z-index: 1; | |
} | |
.node { | |
stroke: #fff; | |
stroke-width: 1.5px; | |
} | |
.link { | |
stroke: #999; | |
} | |
</style> | |
<body> | |
<div id="controls"> | |
<input name="mode" type="radio" value="force" id="mode-force" checked> | |
<label for="mode-force"> Force-Directed</label> | |
<input name="mode" type="radio" value="circle" id="mode-circle"> | |
<label for="mode-circle"> Circle</label> | |
</div> | |
<div id="graph"></div> | |
<script src="https://d3js.org/d3.v3.min.js"></script> | |
<script> | |
var width = 960, | |
height = 500, | |
margin = 100; | |
var x_center = width / 2, | |
y_center = height / 2, | |
radius = (height - 2 * margin) / 2; | |
var n_elements; | |
function index_to_rad(index) { | |
return 2 * Math.PI * index / n_elements; | |
} | |
var color = d3.scale.category20(); | |
var force = d3.layout.force() | |
.charge(-120) | |
.linkDistance(30) | |
.size([width, height]); | |
var x_scale = d3.scale.linear() | |
.domain([0,1]) | |
.range([x_center, x_center + radius]); | |
var y_scale = d3.scale.linear() | |
.domain([0,1]) | |
.range([y_center, y_center + radius]); | |
var svg = d3.select("body").append("svg") | |
.attr("width", width) | |
.attr("height", height); | |
d3.json("miserables.json", function(error, graph) { | |
if (error) throw error; | |
graph.nodes = graph.nodes.sort(function(a, b) { return d3.ascending(a.group, b.group); }); | |
n_elements = graph.nodes.length; | |
force | |
.nodes(graph.nodes) | |
.links(graph.links) | |
.start(); | |
var max_value = d3.max(graph.links, function(d){ return d.value; }); | |
var link = svg.selectAll(".link") | |
.data(graph.links) | |
.enter().append("line") | |
.attr("class", "link") | |
.style("opacity", function(d) { return 0.2 + 0.8 * d.value / max_value; }); | |
var node = svg.selectAll(".node") | |
.data(graph.nodes) | |
.enter().append("circle") | |
.attr("class", "node") | |
.attr("r", 5) | |
.style("fill", function(d) { return color(d.group); }) | |
.call(force.drag); | |
node.append("title") | |
.text(function(d) { return d.name; }); | |
force.on("tick", function() { | |
link.attr("x1", function(d) { return d.source.x; }) | |
.attr("y1", function(d) { return d.source.y; }) | |
.attr("x2", function(d) { return d.target.x; }) | |
.attr("y2", function(d) { return d.target.y; }); | |
node.attr("cx", function(d) { return d.x; }) | |
.attr("cy", function(d) { return d.y; }); | |
}); | |
d3.selectAll("#controls input[name=mode]").on("change", function(){ | |
if (this.value == 'circle') { | |
force.stop(); | |
var circles = svg.selectAll('circle')[0]; | |
svg.selectAll('circle').data().forEach(function(d,i){ | |
d.x_resume = circles[i].cx.animVal.value; | |
d.y_resume = circles[i].cy.animVal.value | |
}); | |
svg.selectAll('line') | |
.transition().duration(1000) | |
.attr('x1', function(d){ return x_scale(Math.sin(index_to_rad(d.source.index))); }) | |
.attr('x2', function(d){ return x_scale(Math.sin(index_to_rad(d.target.index))); }) | |
.attr('y1', function(d){ return y_scale(Math.cos(index_to_rad(d.source.index))); }) | |
.attr('y2', function(d){ return y_scale(Math.cos(index_to_rad(d.target.index))); }); | |
svg.selectAll('circle') | |
.transition().duration(1000) | |
.attr('cx', function(d,i){ return x_scale(Math.sin(index_to_rad(i))); }) | |
.attr('cy', function(d,i){ return y_scale(Math.cos(index_to_rad(i))); }); | |
} else { | |
svg.selectAll('line') | |
.transition().duration(1000) | |
.attr('x1', function(d){ return d.source.x_resume; }) | |
.attr('y1', function(d){ return d.source.y_resume; }) | |
.attr('x2', function(d){ return d.target.x_resume; }) | |
.attr('y2', function(d){ return d.target.y_resume; }); | |
svg.selectAll('circle') | |
.transition().duration(1000) | |
.attr('cx', function(d){ return d.x_resume; }) | |
.attr('cy', function(d){ return d.y_resume; }); | |
setTimeout(function(){ | |
force.resume(); | |
},1000); | |
} | |
}); | |
}); | |
</script> |
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{ | |
"nodes":[ | |
{"name":"Myriel","group":1}, | |
{"name":"Napoleon","group":1}, | |
{"name":"Mlle.Baptistine","group":1}, | |
{"name":"Mme.Magloire","group":1}, | |
{"name":"CountessdeLo","group":1}, | |
{"name":"Geborand","group":1}, | |
{"name":"Champtercier","group":1}, | |
{"name":"Cravatte","group":1}, | |
{"name":"Count","group":1}, | |
{"name":"OldMan","group":1}, | |
{"name":"Labarre","group":2}, | |
{"name":"Valjean","group":2}, | |
{"name":"Marguerite","group":3}, | |
{"name":"Mme.deR","group":2}, | |
{"name":"Isabeau","group":2}, | |
{"name":"Gervais","group":2}, | |
{"name":"Tholomyes","group":3}, | |
{"name":"Listolier","group":3}, | |
{"name":"Fameuil","group":3}, | |
{"name":"Blacheville","group":3}, | |
{"name":"Favourite","group":3}, | |
{"name":"Dahlia","group":3}, | |
{"name":"Zephine","group":3}, | |
{"name":"Fantine","group":3}, | |
{"name":"Mme.Thenardier","group":4}, | |
{"name":"Thenardier","group":4}, | |
{"name":"Cosette","group":5}, | |
{"name":"Javert","group":4}, | |
{"name":"Fauchelevent","group":0}, | |
{"name":"Bamatabois","group":2}, | |
{"name":"Perpetue","group":3}, | |
{"name":"Simplice","group":2}, | |
{"name":"Scaufflaire","group":2}, | |
{"name":"Woman1","group":2}, | |
{"name":"Judge","group":2}, | |
{"name":"Champmathieu","group":2}, | |
{"name":"Brevet","group":2}, | |
{"name":"Chenildieu","group":2}, | |
{"name":"Cochepaille","group":2}, | |
{"name":"Pontmercy","group":4}, | |
{"name":"Boulatruelle","group":6}, | |
{"name":"Eponine","group":4}, | |
{"name":"Anzelma","group":4}, | |
{"name":"Woman2","group":5}, | |
{"name":"MotherInnocent","group":0}, | |
{"name":"Gribier","group":0}, | |
{"name":"Jondrette","group":7}, | |
{"name":"Mme.Burgon","group":7}, | |
{"name":"Gavroche","group":8}, | |
{"name":"Gillenormand","group":5}, | |
{"name":"Magnon","group":5}, | |
{"name":"Mlle.Gillenormand","group":5}, | |
{"name":"Mme.Pontmercy","group":5}, | |
{"name":"Mlle.Vaubois","group":5}, | |
{"name":"Lt.Gillenormand","group":5}, | |
{"name":"Marius","group":8}, | |
{"name":"BaronessT","group":5}, | |
{"name":"Mabeuf","group":8}, | |
{"name":"Enjolras","group":8}, | |
{"name":"Combeferre","group":8}, | |
{"name":"Prouvaire","group":8}, | |
{"name":"Feuilly","group":8}, | |
{"name":"Courfeyrac","group":8}, | |
{"name":"Bahorel","group":8}, | |
{"name":"Bossuet","group":8}, | |
{"name":"Joly","group":8}, | |
{"name":"Grantaire","group":8}, | |
{"name":"MotherPlutarch","group":9}, | |
{"name":"Gueulemer","group":4}, | |
{"name":"Babet","group":4}, | |
{"name":"Claquesous","group":4}, | |
{"name":"Montparnasse","group":4}, | |
{"name":"Toussaint","group":5}, | |
{"name":"Child1","group":10}, | |
{"name":"Child2","group":10}, | |
{"name":"Brujon","group":4}, | |
{"name":"Mme.Hucheloup","group":8} | |
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] | |
} |
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