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October 29, 2018 08:23
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Tree to D3 chart
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function treeGraph(t){ | |
var resultPoints=[],resultLines=[]; | |
resultPoints.push({name:t.name}); | |
if(t.children){ | |
t.children.forEach(function(ct){ | |
var childResult=treeGraph(ct); | |
resultLines.push({ | |
source: t.name, | |
target: ct.name | |
}); | |
resultPoints.push.apply(resultPoints, childResult.points); | |
resultLines.push.apply(resultLines,childResult.lines); | |
}); | |
} | |
return { | |
points: resultPoints, | |
lines: resultLines | |
}; | |
} | |
function graphPos(x){ | |
return x*3+400; | |
} | |
var tree={ | |
name:"Primates", | |
children:[ | |
{ | |
name:"Strepsirrhini", | |
children:[ | |
{ | |
name:"Lemuriformes", | |
children: [ | |
{name:"Lemuroidea"}, | |
{name:"Lorisoidea"} | |
] | |
} | |
] | |
}, | |
{ | |
name:"Haplorhini", | |
children:[ | |
{name:"Tarsiiformes"}, | |
{ | |
name:"Simiiformes", | |
children:[ | |
{name:"Platyrrhini"}, | |
{ | |
name:"Catarrhini", | |
children: [ | |
{name:"Cercopithecidae"}, | |
{ | |
name:"Hominoidea", | |
children:[ | |
{name:"Hylobatidae"}, | |
{name:"Hominidae"} | |
] | |
} | |
] | |
} | |
] | |
} | |
] | |
} | |
] | |
}; | |
var resultGraph=treeGraph(tree); | |
var nodes=resultGraph.points, | |
elements=d3.select("#result").selectAll("circle").data(nodes).enter() | |
.append("circle").attr("r",15).attr("fill","#d5d5d5").attr("opacity",0).on("click",function(e,i){ | |
sim.alpha(.8).restart(); | |
nodes[i].vx=-nodes[i].x; | |
nodes[i].vy=-nodes[i].y; | |
}), | |
lines=d3.select("#result").selectAll("line").data(resultGraph.lines).enter().append("line"), | |
texts=d3.select("#result").selectAll("text").data(nodes).enter().append("text").text(function(x){ | |
return x.name; | |
}); | |
sim=d3.forceSimulation(nodes) | |
.alphaDecay(.005) | |
.force("pos",d3.forceManyBody().strength(-10)) | |
.force("center",d3.forceCenter()) | |
.force("link",d3.forceLink().id(function(x){return x.name;}).links(resultGraph.lines)) | |
.force("x",d3.forceX().strength(.01)).force("y",d3.forceY().strength(.01)) | |
.on("tick",function(){ | |
elements.attr("cx",function(node){ | |
return graphPos(node.x) | |
}).attr("cy",function(node){ | |
return graphPos(node.y) | |
}).attr("opacity",1); | |
lines.attr("x1",function(d){return graphPos(d.source.x)}) | |
.attr("x2",function(d){return graphPos(d.target.x)}) | |
.attr("y1",function(d){return graphPos(d.source.y)}) | |
.attr("y2",function(d){return graphPos(d.target.y)}) | |
.attr("stroke","#000").attr("strokeWidth",2); | |
texts.attr("x",function(node){ | |
return graphPos(node.x)+24; | |
}).attr("y",function(node){ | |
return graphPos(node.y)+4; | |
}); | |
}); |
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