2022-05-15 22:06:37 +00:00
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>Graph Explorer</title>
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<script src="https://d3js.org/d3.v7.min.js"></script>
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<script type='text/javascript'>
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var NODE_GRAPH=<!-- REPLACE_THIS_WITH_GRAPH -->;
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</script>
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<script>
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// Copyright 2021 Observable, Inc.
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// Released under the ISC license.
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// https://observablehq.com/@d3/disjoint-force-directed-graph
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function ForceGraph({
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nodes, // an iterable of node objects (typically [{id}, …])
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links // an iterable of link objects (typically [{source, target}, …])
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}, {
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nodeId = d => d.id, // given d in nodes, returns a unique identifier (string)
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nodeGroup, // given d in nodes, returns an (ordinal) value for color
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nodeGroups, // an array of ordinal values representing the node groups
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nodeTitle, // given d in nodes, a title string
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nodeFill = "currentColor", // node stroke fill (if not using a group color encoding)
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nodeStroke = "#fff", // node stroke color
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nodeStrokeWidth = 1.5, // node stroke width, in pixels
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nodeStrokeOpacity = 1, // node stroke opacity
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nodeRadius = 5, // node radius, in pixels
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nodeStrength,
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linkSource = ({source}) => source, // given d in links, returns a node identifier string
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linkTarget = ({target}) => target, // given d in links, returns a node identifier string
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linkStroke = "#999", // link stroke color
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linkStrokeOpacity = 0.6, // link stroke opacity
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linkStrokeWidth = 1.5, // given d in links, returns a stroke width in pixels
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linkStrokeLinecap = "round", // link stroke linecap
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linkStrength,
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colors = d3.schemeTableau10, // an array of color strings, for the node groups
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width = 640, // outer width, in pixels
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height = 400, // outer height, in pixels
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2022-05-16 21:28:43 +00:00
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invalidation, // when this promise resolves, stop the simulation
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linkLabel = null,
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} = {}) {
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// Compute values.
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const N = d3.map(nodes, nodeId).map(intern);
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const LS = d3.map(links, linkSource).map(intern);
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const LT = d3.map(links, linkTarget).map(intern);
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if (nodeTitle === undefined) nodeTitle = (_, i) => N[i];
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const T = nodeTitle == null ? null : d3.map(nodes, nodeTitle);
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const G = nodeGroup == null ? null : d3.map(nodes, nodeGroup).map(intern);
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const W = typeof linkStrokeWidth !== "function" ? null : d3.map(links, linkStrokeWidth);
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// Replace the input nodes and links with mutable objects for the simulation.
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nodes = d3.map(nodes, (_, i) => ({id: N[i]}));
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links = d3.map(links, (_, i) => ({source: LS[i], target: LT[i]}));
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// Compute default domains.
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if (G && nodeGroups === undefined) nodeGroups = d3.sort(G);
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// Construct the scales.
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const color = nodeGroup == null ? null : d3.scaleOrdinal(nodeGroups, colors);
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// Construct the forces.
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const forceNode = d3.forceManyBody();
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const forceLink = d3.forceLink(links).id(({index: i}) => N[i]);
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if (nodeStrength !== undefined) forceNode.strength(nodeStrength);
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if (linkStrength !== undefined) forceLink.strength(linkStrength);
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const simulation = d3.forceSimulation(nodes)
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.force("link", forceLink)
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.force("charge", forceNode)
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.force("x", d3.forceX())
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.force("y", d3.forceY())
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.on("tick", ticked);
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const svg = d3.create("svg")
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.attr("width", width)
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.attr("height", height)
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.attr("viewBox", [-width / 2, -height / 2, width, height])
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.attr("style", "max-width: 100%; height: auto; height: intrinsic;");
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// Add arrowheads
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svg.append('defs').append('marker')
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.attr('id', 'arrowhead')
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.attr('viewBox', '-0 -5 10 10')
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.attr('refX', 13)
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.attr('refY', 0)
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.attr('orient', 'auto')
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.attr('markerWidth', 13)
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.attr('markerHeight', 13)
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.attr('xoverflow', 'visible')
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.append('svg:path')
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.attr('d', 'M 0,-5 L 10 ,0 L 0,5')
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.attr('fill', '#999')
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.style('stroke','none');
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const link = svg.append("g")
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.attr("stroke", linkStroke)
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.attr("stroke-opacity", linkStrokeOpacity)
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.attr("stroke-width", typeof linkStrokeWidth !== "function" ? linkStrokeWidth : null)
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.attr("stroke-linecap", linkStrokeLinecap)
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.attr('marker-end','url(#arrowhead)')
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.selectAll("line")
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.data(links)
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.join("line");
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2022-05-16 21:28:43 +00:00
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let edgelabels = null;
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let edgepaths = null;
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if (linkLabel) {
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edgepaths = svg.selectAll(".edgepath")
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.data(links)
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.enter()
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.append('path')
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.attr('class', 'edgepath')
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.attr('fill-opacity', 0)
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.attr('stroke-opacity', 0)
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.attr('id', function (d, i) {return 'edgepath' + i})
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.style("pointer-events", "none");
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edgelabels = svg.selectAll(".edgelabel")
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.data(links)
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.enter()
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.append('text')
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.style("pointer-events", "none")
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.attr('class', 'edgelabel')
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.attr('id', function (d, i) {return 'edgelabel' + i})
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.attr('font-size', 10)
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.attr('fill', '#666');
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edgelabels.append('textPath')
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.attr('xlink:href', function (d, i) {return '#edgepath' + i})
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.style("text-anchor", "middle")
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.style("pointer-events", "none")
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.attr("startOffset", "50%")
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.text(linkLabel);
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}
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if (W) link.attr("stroke-width", ({index: i}) => W[i]);
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const node = svg.append("g")
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.attr("fill", nodeFill)
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.attr("stroke", nodeStroke)
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.attr("stroke-opacity", nodeStrokeOpacity)
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.attr("stroke-width", nodeStrokeWidth)
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.selectAll("circle")
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.data(nodes)
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.join("circle")
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.attr("r", nodeRadius)
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.call(drag(simulation));
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if (G) node.attr("fill", ({index: i}) => color(G[i]));
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if (T) node.append("title").text(({index: i}) => T[i]);
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// Handle invalidation.
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if (invalidation != null) invalidation.then(() => simulation.stop());
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function intern(value) {
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return value !== null && typeof value === "object" ? value.valueOf() : value;
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}
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function ticked() {
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link
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.attr("x1", d => d.source.x)
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.attr("y1", d => d.source.y)
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.attr("x2", d => d.target.x)
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.attr("y2", d => d.target.y);
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node
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.attr("cx", d => d.x)
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.attr("cy", d => d.y);
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if (linkLabel) {
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edgepaths.attr('d', function (d) {
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return 'M ' + d.source.x + ' ' + d.source.y + ' L ' + d.target.x + ' ' + d.target.y;
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});
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edgelabels.attr('transform', function (d) {
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if (d.target.x < d.source.x) {
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var bbox = this.getBBox();
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rx = bbox.x + bbox.width / 2;
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ry = bbox.y + bbox.height / 2;
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return 'rotate(180 ' + rx + ' ' + ry + ')';
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}
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else {
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return 'rotate(0)';
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}
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});
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}
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}
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function drag(simulation) {
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function dragstarted(event) {
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if (!event.active) simulation.alphaTarget(0.3).restart();
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event.subject.fx = event.subject.x;
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event.subject.fy = event.subject.y;
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}
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function dragged(event) {
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event.subject.fx = event.x;
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event.subject.fy = event.y;
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}
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function dragended(event) {
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if (!event.active) simulation.alphaTarget(0);
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event.subject.fx = null;
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event.subject.fy = null;
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}
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return d3.drag()
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.on("start", dragstarted)
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.on("drag", dragged)
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.on("end", dragended);
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}
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return Object.assign(svg.node(), {scales: {color}});
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}
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</script>
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<style>
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body, html {
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padding: 0;
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margin: 0;
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}
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#graph_holder {
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padding: 0;
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margin: 0;
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width: 100vw;
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height: 100vh;
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}
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</style>
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</head>
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<body>
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<div id="graph_holder">
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</div>
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<script>
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var edges = [];
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for (var source of Object.keys(NODE_GRAPH)) {
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for (var target of NODE_GRAPH[source].links) {
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var node_id = target.target;
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if (node_id.startsWith('id:')) {
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node_id = node_id.substring(3);
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}
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if (NODE_GRAPH[node_id] === undefined) {
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continue;
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}
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edges.push({source, target: node_id, relation: target.relation});
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}
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}
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var graph = {
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nodes: Object.keys(NODE_GRAPH),
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links: edges,
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};
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var holder = document.getElementById('graph_holder');
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var chart = ForceGraph(graph, {
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nodeId: d => d,
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nodeGroup: d => NODE_GRAPH[d].depth,
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nodeTitle: d => `${NODE_GRAPH[d].title}`,
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nodeRadius: d => 3 + Math.max(1, 4 - NODE_GRAPH[d.id].depth) * 2,
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width: holder.clientWidth,
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height: holder.clientHeight,
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linkStrokeWidth: 1,
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// linkStrength: -5,
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// invalidation, // a promise to stop the simulation when the cell is re-run
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linkLabel: (d) => { const e = edges[d.index]; if (e.relation) { return e.relation; } else { return ''; } },
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});
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holder.appendChild(chart);
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</script>
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</body>
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</html>
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