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Simple d3.js Tree Diagram with styling - Shell Rock Watershed (07080202)

This is a simple d3.js tree diagram with dynamic styling added to the nodes and links as used as an example in the book D3 Tips and Tricks.

It is derived from the Mike Bostock Collapsible tree example but it is a VERY cut down version without the ability to update (collapse).

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Collapsible Tree Example</title>
<style>
.node circle {
fill: #fff;
stroke: black;
stroke-width: 4px;
}
.node text { font: 12px sans-serif; }
.link {
fill: none;
stroke: #ccc;
stroke-width: 4px;
}
</style>
</head>
<body>
<!-- load the d3.js library -->
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>
var treeData = [
{
"name": "Z1-A1",
"parent": "null",
"value": 1,
"type": "black",
"level": "rgb(174,173,137)",
"children": [
{
"name": "A1",
"parent": "Z1-A1",
"value": 40,
"type": "black",
"level": "rgb(174,173,137)",
"children": [
{
"name": "A1-B1",
"parent": "A1",
"value": 1,
"type": "black",
"level": "rgb(166,54,3)",
"children": [
{
"name": "B1",
"parent": "A1-B1",
"value": 33,
"type": "black",
"level": "rgb(166,54,3)",
"children": [
{
"name": "B1-C1",
"parent": "B1",
"value": 1,
"type": "black",
"level": "rgb(253,174,107)",
"children": [
{
"name": "C1",
"parent": "B1-C1",
"value": 26,
"type": "black",
"level": "rgb(253,174,107)",
"children": [
{
"name": "DX0",
"parent": "C1",
"value": 1,
"type": "black",
"level": "rgb(200,200,200)"
}
]
}
]
},
{
"name": "B1-C2",
"parent": "B1",
"value": 1,
"type": "black",
"level": "rgb(230,85,13)",
"children": [
{
"name": "C2",
"parent": "B1-C2",
"value": 17,
"type": "black",
"level": "rgb(230,85,13)",
"children": [
{
"name": "C2-D1",
"parent": "C2",
"value": 1,
"type": "black",
"level": "rgb(253,208,162)",
"children": [
{
"name": "D1",
"parent": "C2-D1",
"value": 12,
"type": "black",
"level": "rgb(253,208,162)",
"children": [
{
"name": "EX0",
"parent": "D1",
"value": 1,
"type": "black",
"level": "rgb(200,200,200)"
}
]
}
]
}
]
}
]
},
{
"name": "B1-C3",
"parent": "B1",
"value": 1,
"type": "black",
"level": "rgb(253,141,60)",
"children": [
{
"name": "C3",
"parent": "B1-C3",
"value": 15,
"type": "black",
"level": "rgb(253,141,60)",
"children": [
{
"name": "DY0",
"parent": "C3",
"value": 1,
"type": "black",
"level": "rgb(200,200,200)"
}
]
}
]
}
]
}
]
},
{
"name": "A1-B2",
"parent": "A1",
"value": 1,
"type": "black",
"level": "rgb(165,15,21)",
"children": [
{
"name": "B2",
"parent": "A1-B2",
"value": 39,
"type": "black",
"level": "rgb(165,15,21)",
"children": [
{
"name": "B2-C4",
"parent": "B2",
"value": 1,
"type": "black",
"level": "rgb(251,106,74)",
"children": [
{
"name": "C4",
"parent": "B2-C4",
"value": 21,
"type": "black",
"level": "rgb(251,106,74)",
"children": [
{
"name": "DZ0",
"parent": "C4",
"value": 1,
"type": "black",
"level": "rgb(200,200,200)"
}
]
}
]
},
{
"name": "B2-C5",
"parent": "B2",
"value": 1,
"type": "black",
"level": "rgb(222,45,38)",
"children": [
{
"name": "C5",
"parent": "B2-C5",
"value": 37,
"type": "black",
"level": "rgb(222,45,38)",
"children": [
{
"name": "C5-D2",
"parent": "C5",
"value": 1,
"type": "black",
"level": "rgb(8,69,148)",
"children": [
{
"name": "D2",
"parent": "C5-D2",
"value": 36,
"type": "black",
"level": "rgb(8,69,148)",
"children": [
{
"name": "D2-E1",
"parent": "D2",
"value": 1,
"type": "black",
"level": "rgb(33,113,181)",
"children": [
{
"name": "E1",
"parent": "D2-E1",
"value": 34,
"type": "black",
"level": "rgb(33,113,181)",
"children": [
{
"name": "E1-F1",
"parent": "E1",
"value": 1,
"type": "black",
"level": "rgb(66,146,198)",
"children": [
{
"name": "F1",
"parent": "E1-F1",
"value": 20,
"type": "black",
"level": "rgb(66,146,198)",
"children": [
{
"name": "F1-G1",
"parent": "F1",
"value": 1,
"type": "black",
"level": "rgb(107,174,214)",
"children": [
{
"name": "G1",
"parent": "F1-G1",
"value": 18,
"type": "black",
"level": "rgb(107,174,214)",
"children": [
{
"name": "G1-H1",
"parent": "G1",
"value": 1,
"type": "black",
"level": "rgb(158,202,225)",
"children": [
{
"name": "H1",
"parent": "G1-H1",
"value": 8,
"type": "black",
"level": "rgb(158,202,225)",
"children": [
{
"name": "IX0",
"parent": "H1",
"value": 1,
"type": "black",
"level": "rgb(200,200,200)"
}
]
}
]
}
]
}
]
}
]
}
]
},
{
"name": "E1-F2",
"parent": "E1",
"value": 1,
"type": "black",
"level": "rgb(198,219,239)",
"children": [
{
"name": "F2",
"parent": "E1-F2",
"value": 5,
"type": "black",
"level": "rgb(198,219,239)",
"children": [
{
"name": "GX0",
"parent": "F2",
"value": 1,
"type": "black",
"level": "rgb(200,200,200)"
}
]
}
]
},
{
"name": "E1-F3",
"parent": "E1",
"value": 1,
"type": "black",
"level": "rgb(0,109,44)",
"children": [
{
"name": "F3",
"parent": "E1-F3",
"value": 30,
"type": "black",
"level": "rgb(0,109,44)",
"children": [
{
"name": "F3-G2",
"parent": "F3",
"value": 1,
"type": "black",
"level": "rgb(49,163,84)",
"children": [
{
"name": "G2",
"parent": "F3-G2",
"value": 27,
"type": "black",
"level": "rgb(49,163,84)",
"children": [
{
"name": "G2-H2",
"parent": "G2",
"value": 1,
"type": "black",
"level": "rgb(116,196,118)",
"children": [
{
"name": "H2",
"parent": "G2-H2",
"value": 23,
"type": "black",
"level": "rgb(116,196,118)",
"children": [
{
"name": "I1",
"parent": "H2",
"value": 3,
"type": "black",
"level": "rgb(199,233,192)",
"children": [
{
"name": "JX0",
"parent": "I1",
"value": 1,
"type": "black",
"level": "rgb(200,200,200)"
}
]
}
]
}
]
}
]
}
]
},
{
"name": "F3-G3",
"parent": "F3",
"value": 1,
"type": "black",
"level": "rgb(161,217,155)",
"children": [
{
"name": "G3",
"parent": "F3-G3",
"value": 2,
"type": "black",
"level": "rgb(161,217,155)",
"children": [
{
"name": "FX0",
"parent": "G3",
"value": 1,
"type": "black",
"level": "rgb(200,200,200)"
}
]
}
]
}
]
}
]
},
{
"name": "E1-F4",
"parent": "E1",
"value": 1,
"type": "black",
"level": "rgb(84,39,143)",
"children": [
{
"name": "F4",
"parent": "E1-F4",
"value": 31,
"type": "black",
"level": "rgb(84,39,143)",
"children": [
{
"name": "F4-G4",
"parent": "F4",
"value": 1,
"type": "black",
"level": "rgb(117,107,177)",
"children": [
{
"name": "G4",
"parent": "F4-G4",
"value": 24,
"type": "black",
"level": "rgb(117,107,177)",
"children": [
{
"name": "FY0",
"parent": "G4",
"value": 1,
"type": "black",
"level": "rgb(200,200,200)"
}
]
}
]
},
{
"name": "F4-G5",
"parent": "F4",
"value": 1,
"type": "black",
"level": "rgb(158,154,200)",
"children": [
{
"name": "G5",
"parent": "F4-G5",
"value": 9,
"type": "black",
"level": "rgb(158,154,200)",
"children": [
{
"name": "FZ0",
"parent": "G5",
"value": 1,
"type": "black",
"level": "rgb(200,200,200)"
}
]
}
]
},
{
"name": "F4-G6",
"parent": "F4",
"value": 1,
"type": "black",
"level": "rgb(203,201,226)",
"children": [
{
"name": "G6",
"parent": "F4-G6",
"value": 6,
"type": "black",
"level": "rgb(203,201,226)",
"children": [
{
"name": "FA0",
"parent": "G6",
"value": 1,
"type": "black",
"level": "rgb(200,200,200)"
}
]
}
]
}
]
}
]
}
]
}
]
},
{
"name": "D2-E2",
"parent": "D2",
"value": 1,
"type": "black",
"level": "rgb(190,187,36)",
"children": [
{
"name": "E2",
"parent": "D2-E2",
"value": 28,
"type": "black",
"level": "rgb(190,187,36)",
"children": [
{
"name": "E2-F5",
"parent": "E2",
"value": 1,
"type": "black",
"level": "rgb(254,250,49)",
"children": [
{
"name": "F5",
"parent": "E2-F5",
"value": 14,
"type": "black",
"level": "rgb(254,250,49)",
"children": [
{
"name": "GY0",
"parent": "F5",
"value": 1,
"type": "black",
"level": "rgb(200,200,200)"
}
]
}
]
}
]
}
]
}
]
}
]
},
{
"name": "C5-D3",
"parent": "C5",
"value": 1,
"type": "black",
"level": "rgb(252,174,145)",
"children": [
{
"name": "D3",
"parent": "C5-D3",
"value": 11,
"type": "black",
"level": "rgb(252,174,145)",
"children": [
{
"name": "EY0",
"parent": "D3",
"value": 1,
"type": "black",
"level": "rgb(200,200,200)"
}
]
}
]
}
]
}
]
}
]
}
]
}
]
}
]
}
];
// ************** Generate the tree diagram *****************
var margin = {top: 144, right: 48, bottom: 144, left: 48},
width = 1632 - margin.right - margin.left,
height = 816 - margin.top - margin.bottom;
var i = 0;
var tree = d3.layout.tree()
.size([height, width]);
var diagonal = d3.svg.diagonal()
.projection(function(d) { return [d.y, d.x]; });
var svg = d3.select("body").append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
root = treeData[0];
update(root);
function update(source) {
// Compute the new tree layout.
var nodes = tree.nodes(root).reverse(),
links = tree.links(nodes);
// Normalize for fixed-depth.
nodes.forEach(function(d) { d.y = d.depth * 89; });
// Declare the nodes…
var node = svg.selectAll("g.node")
.data(nodes, function(d) { return d.id || (d.id = ++i); });
// Enter the nodes.
var nodeEnter = node.enter().append("g")
.attr("class", "node")
.attr("transform", function(d) {
return "translate(" + d.y + "," + d.x + ")"; });
nodeEnter.append("circle")
.attr("r", function(d) { return d.value; })
.style("stroke", function(d) { return d.type; })
.style("fill", function(d) { return d.level; });
nodeEnter.append("text")
.attr("x", function(d) {
return d.children || d._children ?
(d.value + 4) * -1 : d.value + 4 })
.attr("dy", ".35em")
.attr("text-anchor", function(d) {
return d.children || d._children ? "end" : "start"; })
.text(function(d) { return d.name; })
.style("fill-opacity", 1);
// Declare the links…
var link = svg.selectAll("path.link")
.data(links, function(d) { return d.target.id; });
// Enter the links.
link.enter().insert("path", "g")
.attr("class", "link")
.style("stroke", function(d) { return d.target.level; })
.attr("d", diagonal);
}
</script>
</body>
</html>
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