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#!/usr/bin/env python
"""
Write first 20 graphs from the graph atlas as graphviz dot files
Gn.dot where n=0,19.
Requires pygraphviz and graphviz.
"""
__author__ = """Aric Hagberg (hagberg@lanl.gov)"""
__date__ = "$Date: 2005-05-19 14:23:02 -0600 (Thu, 19 May 2005) $"
__credits__ = """"""
__revision__ = ""
# Copyright (C) 2006 by
# Aric Hagberg <hagberg@lanl.gov>
# Dan Schult <dschult@colgate.edu>
# Pieter Swart <swart@lanl.gov>
# All rights reserved.
# BSD license.
import networkx as NX
from networkx.generators.atlas import *
from pygraphviz import *
atlas=graph_atlas_g()[0:20]
for G in atlas:
print "graph %s has %d nodes with %d edges"\
%(G.name,NX.number_of_nodes(G),NX.number_of_edges(G))
A=NX.to_agraph(G)
A.graph_attr['label']=G.name
# set default node attributes
A.node_attr['color']='red'
A.node_attr['style']='filled'
A.node_attr['shape']='circle'
A.write(G.name+'.dot')
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