Fixed database typo and removed unnecessary class identifier.
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5098 changed files with 952558 additions and 85 deletions
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Javascript
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----------
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venv/share/doc/networkx-2.5/examples/javascript/force.py
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venv/share/doc/networkx-2.5/examples/javascript/force.py
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"""
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==========
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Javascript
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==========
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Example of writing JSON format graph data and using the D3 Javascript library
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to produce an HTML/Javascript drawing.
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You will need to download the following directory:
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- https://github.com/networkx/networkx/tree/master/examples/javascript/force
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"""
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import json
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import flask
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import networkx as nx
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from networkx.readwrite import json_graph
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G = nx.barbell_graph(6, 3)
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# this d3 example uses the name attribute for the mouse-hover value,
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# so add a name to each node
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for n in G:
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G.nodes[n]["name"] = n
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# write json formatted data
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d = json_graph.node_link_data(G) # node-link format to serialize
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# write json
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json.dump(d, open("force/force.json", "w"))
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print("Wrote node-link JSON data to force/force.json")
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# Serve the file over http to allow for cross origin requests
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app = flask.Flask(__name__, static_folder="force")
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@app.route("/")
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def static_proxy():
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return app.send_static_file("force.html")
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print("\nGo to http://localhost:8000 to see the example\n")
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app.run(port=8000)
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Modified from the example at of D3
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http://mbostock.github.com/d3/ex/force.html
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Run the file force.py to generate the force.json data file needed for this to work.
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Then copy all of the files in this directory to a webserver and load force.html.
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.nodes circle {
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cursor: pointer;
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fill: #ff3399;
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stroke: #000;
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stroke-width: .5px;
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}
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.links line {
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fill: none;
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stroke: #9ecae1;
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stroke-width: .5px;
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}
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<!DOCTYPE html>
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<html>
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<head>
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<title>Force-Directed Layout</title>
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<script type="text/javascript" src="https://d3js.org/d3.v4.min.js"></script>
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<link type="text/css" rel="stylesheet" href="force/force.css"/>
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</head>
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<body>
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<svg width="960" height="600"></svg>
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<script type="text/javascript" src="force/force.js"></script>
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</body>
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</html>
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// This is adapted from https://bl.ocks.org/mbostock/2675ff61ea5e063ede2b5d63c08020c7
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var svg = d3.select("svg"),
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width = +svg.attr("width"),
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height = +svg.attr("height");
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var simulation = d3.forceSimulation()
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.force("link", d3.forceLink().id(function (d) {
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return d.id;
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}))
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.force("charge", d3.forceManyBody())
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.force("center", d3.forceCenter(width / 2, height / 2));
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d3.json("force/force.json", function (error, graph) {
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if (error) throw error;
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var link = svg.append("g")
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.attr("class", "links")
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.selectAll("line")
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.data(graph.links)
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.enter().append("line");
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var node = svg.append("g")
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.attr("class", "nodes")
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.selectAll("circle")
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.data(graph.nodes)
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.enter().append("circle")
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.attr("r", 5)
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.call(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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node.append("title")
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.text(function (d) {
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return d.id;
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});
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simulation
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.nodes(graph.nodes)
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.on("tick", ticked);
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simulation.force("link")
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.links(graph.links);
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function ticked() {
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link
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.attr("x1", function (d) {
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return d.source.x;
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})
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.attr("y1", function (d) {
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return d.source.y;
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})
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.attr("x2", function (d) {
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return d.target.x;
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})
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.attr("y2", function (d) {
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return d.target.y;
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});
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node
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.attr("cx", function (d) {
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return d.x;
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})
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.attr("cy", function (d) {
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return d.y;
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});
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}
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});
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function dragstarted(d) {
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if (!d3.event.active) simulation.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) simulation.alphaTarget(0);
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d.fx = null;
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d.fy = null;
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}
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