A basic reference implementation for sunburst diagrams, representing the flare software package hierarchy (using d3.js, of course!).
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August 29, 2015 14:06
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Basic sunburst (flare)
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| # layout, behaviors and scales | |
| RADIUS = 250 | |
| partition = d3.layout.partition() | |
| .sort(null) | |
| .size([2 * Math.PI, RADIUS * RADIUS]) | |
| .value((node) -> node.size) | |
| arc = d3.svg.arc() | |
| .startAngle((d) -> d.x ) | |
| .endAngle((d) -> d.x + d.dx ) | |
| .innerRadius((d) -> Math.sqrt(d.y) ) | |
| .outerRadius((d) -> Math.sqrt(d.y + d.dy) ) | |
| svg = d3.select('svg') | |
| width = svg.node().getBoundingClientRect().width | |
| height = svg.node().getBoundingClientRect().height | |
| # translate the viewBox to have (0,0) at the center of the vis | |
| svg | |
| .attr | |
| viewBox: "#{-width/2} #{-height/2} #{width} #{height}" | |
| # append a group for zoomable content | |
| zoomable_layer = svg.append('g') | |
| # define a zoom behavior | |
| zoom = d3.behavior.zoom() | |
| .scaleExtent([1,10]) # min-max zoom | |
| .on 'zoom', () -> | |
| # GEOMETRIC ZOOM | |
| zoomable_layer | |
| .attr | |
| transform: "translate(#{zoom.translate()})scale(#{zoom.scale()})" | |
| # bind the zoom behavior to the main SVG | |
| svg.call(zoom) | |
| # group the visualization | |
| vis = zoomable_layer.append('g') | |
| d3.json 'http://wafi.iit.cnr.it/webvis/tmp/flare.json', (tree) -> | |
| vis.datum(tree) | |
| nodes = vis.selectAll('.node') | |
| .data((t) -> partition.nodes(t)) | |
| enter_nodes = nodes.enter().insert('path','path') | |
| .attr | |
| class: 'node' | |
| d: arc | |
| enter_nodes.append('title') | |
| .text((node) -> node.name) | |
| vis.append('text') | |
| .text((tree) -> tree.name) | |
| .attr | |
| class: 'label' | |
| dy: '0.35em' | |
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| svg { | |
| background: white; | |
| } | |
| .node { | |
| vector-effect: non-scaling-stroke; | |
| fill: #AAB; | |
| stroke: white; | |
| stroke-width: 1; | |
| } | |
| .node:hover { | |
| fill: #889; | |
| } | |
| .label { | |
| pointer-events: none; | |
| fill: #444; | |
| text-anchor: middle; | |
| font-family: sans-serif; | |
| font-size: 28px; | |
| text-shadow: -1px 0 white, 0 1px white, 1px 0 white, 0 -1px white; | |
| } |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <meta name="description" content="Basic sunburst (flare)" /> | |
| <title>Basic sunburst (flare)</title> | |
| <link type="text/css" href="index.css" rel="stylesheet"/> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| </head> | |
| <body> | |
| <svg height="500" width="960"></svg> | |
| <script src="index.js"></script> | |
| </body> | |
| </html> |
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| (function() { | |
| var RADIUS, arc, height, partition, svg, vis, width, zoom, zoomable_layer; | |
| RADIUS = 250; | |
| partition = d3.layout.partition().sort(null).size([2 * Math.PI, RADIUS * RADIUS]).value(function(node) { | |
| return node.size; | |
| }); | |
| arc = d3.svg.arc().startAngle(function(d) { | |
| return d.x; | |
| }).endAngle(function(d) { | |
| return d.x + d.dx; | |
| }).innerRadius(function(d) { | |
| return Math.sqrt(d.y); | |
| }).outerRadius(function(d) { | |
| return Math.sqrt(d.y + d.dy); | |
| }); | |
| svg = d3.select('svg'); | |
| width = svg.node().getBoundingClientRect().width; | |
| height = svg.node().getBoundingClientRect().height; | |
| svg.attr({ | |
| viewBox: "" + (-width / 2) + " " + (-height / 2) + " " + width + " " + height | |
| }); | |
| zoomable_layer = svg.append('g'); | |
| zoom = d3.behavior.zoom().scaleExtent([1, 10]).on('zoom', function() { | |
| return zoomable_layer.attr({ | |
| transform: "translate(" + (zoom.translate()) + ")scale(" + (zoom.scale()) + ")" | |
| }); | |
| }); | |
| svg.call(zoom); | |
| vis = zoomable_layer.append('g'); | |
| d3.json('http://wafi.iit.cnr.it/webvis/tmp/flare.json', function(tree) { | |
| var enter_nodes, nodes; | |
| vis.datum(tree); | |
| nodes = vis.selectAll('.node').data(function(t) { | |
| return partition.nodes(t); | |
| }); | |
| enter_nodes = nodes.enter().insert('path', 'path').attr({ | |
| "class": 'node', | |
| d: arc | |
| }); | |
| enter_nodes.append('title').text(function(node) { | |
| return node.name; | |
| }); | |
| return vis.append('text').text(function(tree) { | |
| return tree.name; | |
| }).attr({ | |
| "class": 'label', | |
| dy: '0.35em' | |
| }); | |
| }); | |
| }).call(this); |
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