Fixed database typo and removed unnecessary class identifier.

This commit is contained in:
Batuhan Berk Başoğlu 2020-10-14 10:10:37 -04:00
parent 00ad49a143
commit 45fb349a7d
5098 changed files with 952558 additions and 85 deletions

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Javascript
----------

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"""
==========
Javascript
==========
Example of writing JSON format graph data and using the D3 Javascript library
to produce an HTML/Javascript drawing.
You will need to download the following directory:
- https://github.com/networkx/networkx/tree/master/examples/javascript/force
"""
import json
import flask
import networkx as nx
from networkx.readwrite import json_graph
G = nx.barbell_graph(6, 3)
# this d3 example uses the name attribute for the mouse-hover value,
# so add a name to each node
for n in G:
G.nodes[n]["name"] = n
# write json formatted data
d = json_graph.node_link_data(G) # node-link format to serialize
# write json
json.dump(d, open("force/force.json", "w"))
print("Wrote node-link JSON data to force/force.json")
# Serve the file over http to allow for cross origin requests
app = flask.Flask(__name__, static_folder="force")
@app.route("/")
def static_proxy():
return app.send_static_file("force.html")
print("\nGo to http://localhost:8000 to see the example\n")
app.run(port=8000)

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Modified from the example at of D3
http://mbostock.github.com/d3/ex/force.html
Run the file force.py to generate the force.json data file needed for this to work.
Then copy all of the files in this directory to a webserver and load force.html.

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.nodes circle {
cursor: pointer;
fill: #ff3399;
stroke: #000;
stroke-width: .5px;
}
.links line {
fill: none;
stroke: #9ecae1;
stroke-width: .5px;
}

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<!DOCTYPE html>
<html>
<head>
<title>Force-Directed Layout</title>
<script type="text/javascript" src="https://d3js.org/d3.v4.min.js"></script>
<link type="text/css" rel="stylesheet" href="force/force.css"/>
</head>
<body>
<svg width="960" height="600"></svg>
<script type="text/javascript" src="force/force.js"></script>
</body>
</html>

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// This is adapted from https://bl.ocks.org/mbostock/2675ff61ea5e063ede2b5d63c08020c7
var svg = d3.select("svg"),
width = +svg.attr("width"),
height = +svg.attr("height");
var simulation = d3.forceSimulation()
.force("link", d3.forceLink().id(function (d) {
return d.id;
}))
.force("charge", d3.forceManyBody())
.force("center", d3.forceCenter(width / 2, height / 2));
d3.json("force/force.json", function (error, graph) {
if (error) throw error;
var link = svg.append("g")
.attr("class", "links")
.selectAll("line")
.data(graph.links)
.enter().append("line");
var node = svg.append("g")
.attr("class", "nodes")
.selectAll("circle")
.data(graph.nodes)
.enter().append("circle")
.attr("r", 5)
.call(d3.drag()
.on("start", dragstarted)
.on("drag", dragged)
.on("end", dragended));
node.append("title")
.text(function (d) {
return d.id;
});
simulation
.nodes(graph.nodes)
.on("tick", ticked);
simulation.force("link")
.links(graph.links);
function ticked() {
link
.attr("x1", function (d) {
return d.source.x;
})
.attr("y1", function (d) {
return d.source.y;
})
.attr("x2", function (d) {
return d.target.x;
})
.attr("y2", function (d) {
return d.target.y;
});
node
.attr("cx", function (d) {
return d.x;
})
.attr("cy", function (d) {
return d.y;
});
}
});
function dragstarted(d) {
if (!d3.event.active) simulation.alphaTarget(0.3).restart();
d.fx = d.x;
d.fy = d.y;
}
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 = null;
d.fy = null;
}