dev-chiefworks
168 lines
5.0 KiB
JavaScript
168 lines
5.0 KiB
JavaScript
/* ------------------------------------------------------------------------------
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*
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* # D3.js - cluster dendrogram
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*
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* Demo of cluster dendrogram setup in cartesian orientation
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*
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* Version: 1.0
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* Latest update: August 1, 2015
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*
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* ---------------------------------------------------------------------------- */
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$(function () {
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// Initialize chart
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treeCluster('#d3-tree-dendrogram', 800);
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// Chart setup
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function treeCluster(element, height) {
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// Basic setup
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// ------------------------------
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// Define main variables
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var d3Container = d3.select(element),
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margin = {top: 0, right: 0, bottom: 0, left: 40},
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width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right,
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height = height - margin.top - margin.bottom - 5;
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// Create chart
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// ------------------------------
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// Add SVG element
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var container = d3Container.append("svg");
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// Add SVG group
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var svg = container
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.attr("width", width + margin.left + margin.right)
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.attr("height", height + margin.top + margin.bottom)
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.append("g")
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.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
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// Construct chart layout
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// ------------------------------
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// Cluster
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var cluster = d3.layout.cluster()
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.size([height, width - 180]);
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// Diagonal projection
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var diagonal = d3.svg.diagonal()
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.projection(function(d) { return [d.y, d.x]; });
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// Load data
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// ------------------------------
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d3.json("assets/demo_data/d3/tree/tree_data_dendrogram.json", function(error, root) {
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var nodes = cluster.nodes(root),
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links = cluster.links(nodes);
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// Links
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// ------------------------------
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// Append link group
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var linkGroup = svg.append("g")
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.attr("class", "d3-tree-link-group");
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// Append link path
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var link = linkGroup.selectAll(".d3-tree-link")
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.data(links)
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.enter()
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.append("path")
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.attr("class", "d3-tree-link")
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.style("fill", "none")
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.style("stroke", "#ddd")
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.style("stroke-width", 1.5)
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.attr("d", diagonal);
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// Nodes
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// ------------------------------
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// Append node group
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var nodeGroup = svg.append("g")
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.attr("class", "d3-tree-node-group");
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// Append node
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var node = nodeGroup.selectAll(".d3-tree-node")
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.data(nodes)
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.enter()
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.append("g")
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.attr("class", "d3-tree-node")
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.attr("transform", function(d) { return "translate(" + d.y + "," + d.x + ")"; })
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// Append node circles
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node.append("circle")
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.style("fill", "#fff")
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.style("stroke", "#2196F3")
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.style("stroke-width", 1.5)
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.attr("r", 4.5);
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// Append node text
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var text = node.append("text")
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.attr("dx", function(d) { return d.children ? -10 : 10; })
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.attr("dy", 4)
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.style("text-anchor", function(d) { return d.children ? "end" : "start"; })
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.style("font-size", 12)
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.style("background-color", "#fff")
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.text(function(d) { return d.name; });
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// Resize chart
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// ------------------------------
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// Call function on window resize
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$(window).on('resize', resize);
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// Call function on sidebar width change
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$('.sidebar-control').on('click', resize);
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// Resize function
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//
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// Since D3 doesn't support SVG resize by default,
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// we need to manually specify parts of the graph that need to
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// be updated on window resize
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function resize() {
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// Layout variables
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width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right,
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nodes = cluster.nodes(root),
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links = cluster.links(nodes);
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// Layout
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// -------------------------
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// Main svg width
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container.attr("width", width + margin.left + margin.right);
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// Width of appended group
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svg.attr("width", width + margin.left + margin.right);
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// Tree size
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cluster.size([height, width - 180]);
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// Chart elements
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// -------------------------
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// Link paths
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svg.selectAll(".d3-tree-link").attr("d", diagonal)
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// Node paths
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svg.selectAll(".d3-tree-node").attr("transform", function(d) { return "translate(" + d.y + "," + d.x + ")"; });
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}
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});
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}
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}); |