networkx

Links: notebook, html, python, slides, GitHub

networkx draws networks. It does not work too well on big graphs (< 1000 vertices).

documentation source installation tutorial gallerie

from jyquickhelper import add_notebook_menu
add_notebook_menu()
%matplotlib inline

example

import networkx as nx
import matplotlib.pyplot as plt

G=nx.random_geometric_graph(200,0.125)
# position is stored as node attribute data for random_geometric_graph
pos=nx.get_node_attributes(G,'pos')

# find node near center (0.5,0.5)
dmin=1
ncenter=0
for n in pos:
    x,y=pos[n]
    d=(x-0.5)**2+(y-0.5)**2
    if d<dmin:
        ncenter=n
        dmin=d

# color by path length from node near center
p=nx.single_source_shortest_path_length(G,ncenter)

plt.figure(figsize=(8,8))
nx.draw_networkx_edges(G,pos,nodelist=[ncenter],alpha=0.4)
nx.draw_networkx_nodes(G,pos,nodelist=p.keys(),
                       node_size=80)

plt.xlim(-0.05,1.05)
plt.ylim(-0.05,1.05)
plt.axis('off')
(-0.05, 1.05, -0.05, 1.05)
../_images/im_networkx_5_1.png