162 lines
4.0 KiB
HTML
162 lines
4.0 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<style>
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path.link {
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fill: none;
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stroke: #666;
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stroke-width: 1.5px;
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}
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circle {
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fill: #ccc;
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stroke: #fff;
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stroke: black;
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stroke-width: 1.5px;
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}
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text {
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fill: #000;
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font: 10px sans-serif;
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pointer-events: none;
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}
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</style>
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<meta charset="utf-8" />
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<title></title>
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</head>
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<body>
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<script type="text/javascript" src="../lib/d3.v5.min.js"></script>
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<script>
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d3.dsv(",", "board_games.csv", function (d) {
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return {
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source: d.source,
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target: d.target,
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value: +d.value,
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};
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})
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.then(function (data) {
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var links = data;
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var nodes = {};
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// compute the distinct nodes from the links.
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links.forEach(function (link) {
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link.source =
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nodes[link.source] ||
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(nodes[link.source] = { name: link.source });
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link.target =
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nodes[link.target] ||
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(nodes[link.target] = { name: link.target });
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});
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var width = 1200,
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height = 700;
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var force = d3
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.forceSimulation()
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.nodes(d3.values(nodes))
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.force("link", d3.forceLink(links).distance(100))
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.force("center", d3.forceCenter(width / 2, height / 2))
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.force("x", d3.forceX())
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.force("y", d3.forceY())
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.force("charge", d3.forceManyBody().strength(-250))
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.alphaTarget(1)
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.on("tick", tick);
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var svg = d3
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.select("body")
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.append("svg")
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.attr("width", width)
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.attr("height", height);
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// add the links
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var path = svg
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.append("g")
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.selectAll("path")
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.data(links)
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.enter()
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.append("path")
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.attr("class", function (d) {
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return "link " + d.type;
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});
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// define the nodes
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var node = svg
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.selectAll(".node")
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.data(force.nodes())
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.enter()
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.append("g")
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.attr("class", "node")
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.call(
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d3
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.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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// add the nodes
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node
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.append("circle")
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.attr("id", function (d) {
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return d.name.replace(/\s+/g, "").toLowerCase();
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})
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.attr("r", 5);
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// add the curvy lines
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function tick() {
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path.attr("d", function (d) {
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var dx = d.target.x - d.source.x,
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dy = d.target.y - d.source.y,
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dr = Math.sqrt(dx * dx + dy * dy);
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return (
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"M" +
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d.source.x +
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"," +
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d.source.y +
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"A" +
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dr +
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"," +
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dr +
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" 0 0,1 " +
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d.target.x +
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"," +
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d.target.y
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);
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});
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node.attr("transform", function (d) {
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return "translate(" + d.x + "," + d.y + ")";
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});
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}
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function dragstarted(d) {
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if (!d3.event.active) force.alphaTarget(0.3).restart();
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d.fx = d.x;
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d.fy = d.y;
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}
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function dragged(d) {
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d.fx = d3.event.x;
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d.fy = d3.event.y;
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}
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function dragended(d) {
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if (!d3.event.active) force.alphaTarget(0);
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if (d.fixed == true) {
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d.fx = d.x;
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d.fy = d.y;
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} else {
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d.fx = null;
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d.fy = null;
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}
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}
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})
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.catch(function (error) {
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console.log(error);
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});
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</script>
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</body>
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</html>
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