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d3v4 force layout with labels
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| .link { | |
| stroke: #aaa; | |
| } | |
| .node { | |
| pointer-events: all; | |
| stroke: none; | |
| stroke-width: 40px; | |
| } | |
| </style> | |
| <svg width="960" height="600"></svg> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <script> | |
| var svg = d3.select("svg"), | |
| width =+ svg.attr("width"), | |
| height =+ svg.attr("height"); | |
| const color = d3.scaleOrdinal(d3.schemeCategory20); | |
| const simulation = d3.forceSimulation() | |
| .force("link", d3.forceLink().id(d => d.id).distance(40)) | |
| .force("charge", d3.forceManyBody().strength(-100)) | |
| .force("center", d3.forceCenter(width / 2, height / 2)); | |
| d3.json("miserables.json", function(error, graph) { | |
| if (error) throw error; | |
| svg.append("rect") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .style("fill", "none") | |
| .style("pointer-events", "all") | |
| .call(d3.zoom() | |
| .scaleExtent([1 / 2, 4]) | |
| .on("zoom", zoomed)); | |
| const cont = svg.append("g") | |
| .attr("class", "container"); | |
| const link = cont.append("g") | |
| .attr("class", "links") | |
| .selectAll(".link") | |
| .data(graph.links, d => d.target.id) | |
| .enter() | |
| .append("line") | |
| .attr("class", "link"); | |
| const node = cont.append("g") | |
| .attr("class", "nodes") | |
| .selectAll(".node") | |
| .data(graph.nodes, d => d.id) | |
| .enter() | |
| .append("g") | |
| .attr("class", "node") | |
| .call(d3.drag() | |
| .on("start", dragstarted) | |
| .on("drag", dragged) | |
| .on("end", dragended)); | |
| node.append("circle") | |
| .attr("r", 10) | |
| .attr("fill", d => color(d.group)); | |
| node.append("title") | |
| .text(d => d.id); | |
| node.append("text") | |
| .attr("dy", 12) | |
| .attr("dx", ".35em") | |
| .text(d => d.id); | |
| simulation | |
| .nodes(graph.nodes) | |
| .on("tick", ticked); | |
| simulation.force("link") | |
| .links(graph.links); | |
| function zoomed() { | |
| cont.attr("transform", d3.event.transform); | |
| }; | |
| function ticked() { | |
| link | |
| .attr("x1", d => d.source.x) | |
| .attr("y1", d => d.source.y) | |
| .attr("x2", d => d.target.x) | |
| .attr("y2", d => d.target.y); | |
| node | |
| .attr("transform", d => `translate(${d.x}, ${d.y})`); | |
| } | |
| }); | |
| function dragstarted(d) { | |
| if (!d3.event.active) simulation.alphaTarget(0.3).restart() | |
| } | |
| function dragged(d) { | |
| d.fx = d3.event.x; | |
| d.fy = d3.event.y; | |
| } | |
| function dragended(d) { | |
| if (!d3.event.active) simulation.alphaTarget(0); | |
| d.fx = undefined; | |
| d.fy = undefined; | |
| } | |
| </script> |
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