|
<!DOCTYPE html> |
|
<meta charset="utf-8"> |
|
<style> |
|
|
|
.node circle { |
|
fill: #999; |
|
} |
|
|
|
.node text { |
|
font: 10px sans-serif; |
|
} |
|
|
|
.node--internal circle { |
|
fill: #555; |
|
} |
|
|
|
.node--internal text { |
|
text-shadow: 0 1px 0 #fff, 0 -1px 0 #fff, 1px 0 0 #fff, -1px 0 0 #fff; |
|
} |
|
|
|
.link { |
|
fill: none; |
|
stroke: #555; |
|
stroke-opacity: 0.4; |
|
stroke-width: 1.5px; |
|
} |
|
|
|
</style> |
|
<body> |
|
<script src="//d3js.org/d3.v4.0.0-alpha.29.js"></script> |
|
<script> |
|
|
|
var width = 960, |
|
height = 500, |
|
radius = 250; |
|
|
|
var burrow = function(table) { |
|
// create nested object |
|
var obj = {}; |
|
table.forEach(function(row) { |
|
// start at root |
|
var layer = obj; |
|
|
|
// create children as nested objects |
|
row.taxonomy.forEach(function(key) { |
|
layer[key] = key in layer ? layer[key] : {}; |
|
layer = layer[key]; |
|
}); |
|
}); |
|
|
|
// recursively create children array |
|
var descend = function(obj, depth) { |
|
var arr = []; |
|
var depth = depth || 0; |
|
for (var k in obj) { |
|
var child = { |
|
name: k, |
|
depth: depth, |
|
children: descend(obj[k], depth+1) |
|
}; |
|
arr.push(child); |
|
} |
|
return arr; |
|
}; |
|
|
|
// use descend to create nested children arrys |
|
return { |
|
name: "root", |
|
children: descend(obj, 1), |
|
depth: 0 |
|
} |
|
}; |
|
|
|
var tree = d3.tree() |
|
.size([360, radius - 90]) |
|
.separation(function(a, b) { return (a.parent == b.parent ? 1 : 2) / a.depth; }); |
|
|
|
var svg = d3.select("body").append("svg") |
|
.attr("width", width) |
|
.attr("height", height) |
|
.append("g") |
|
.attr("transform", "translate(" + (width / 2) + "," + (height / 2) + ")"); |
|
|
|
d3.tsv("d3-hierarchy.tsv", function(error, data) { |
|
if (error) throw error; |
|
|
|
// splitting keys into an array is required before passing data into burrow |
|
data.forEach(function(row) { |
|
row.taxonomy = row.file.split("/"); |
|
}); |
|
|
|
var root = d3.hierarchy(burrow(data)); |
|
|
|
tree(root); |
|
|
|
var link = svg.selectAll(".link") |
|
.data(root.descendants().slice(1)) |
|
.enter().append("path") |
|
.attr("class", "link") |
|
.attr("d", function(d) { |
|
return "M" + project(d.x, d.y) |
|
+ "C" + project(d.x, (d.y + d.parent.y) / 2) |
|
+ " " + project(d.parent.x, (d.y + d.parent.y) / 2) |
|
+ " " + project(d.parent.x, d.parent.y); |
|
}); |
|
|
|
var node = svg.selectAll(".node") |
|
.data(root.descendants()) |
|
.enter().append("g") |
|
.attr("class", function(d) { return "node" + (d.children ? " node--internal" : " node--leaf"); }) |
|
.attr("transform", function(d) { return "translate(" + project(d.x, d.y) + ")"; }); |
|
|
|
node.append("circle") |
|
.attr("r", 2.5); |
|
|
|
node.append("text") |
|
.attr("dy", ".31em") |
|
.attr("x", function(d) { return d.x < 180 === !d.children ? 6 : -6; }) |
|
.style("text-anchor", function(d) { return d.x < 180 === !d.children ? "start" : "end"; }) |
|
.attr("transform", function(d) { return "rotate(" + (d.x < 180 ? d.x - 90 : d.x + 90) + ")"; }) |
|
.text(function(d) { return d.data.name; }); |
|
}); |
|
|
|
function project(x, y) { |
|
var angle = (x - 90) / 180 * Math.PI, radius = y; |
|
return [radius * Math.cos(angle), radius * Math.sin(angle)]; |
|
} |
|
|
|
</script> |
