Note

This documents the development version of NetworkX. Documentation for the current release can be found here.

Pygraphviz AttributesΒΆ

An example showing how to use the interface to the pygraphviz AGraph class to convert to and from graphviz.

Also see the pygraphviz documentation and examples at http://pygraphviz.github.io/

Out:

edges
[('1', '2', {'color': 'red'}), ('2', '3', {'color': 'red'})]
default graph attributes
{'graph': {}, 'node': {}, 'edge': {'color': ''}}
node node attributes
[('1', {}), ('2', {}), ('3', {}), ('4', {})]

import networkx as nx

# networkx graph
G = nx.Graph()
# ad edges with red color
G.add_edge(1, 2, color="red")
G.add_edge(2, 3, color="red")
# add nodes 3 and 4
G.add_node(3)
G.add_node(4)

# convert to a graphviz agraph
A = nx.nx_agraph.to_agraph(G)

# write to dot file
A.write("k5_attributes.dot")

# convert back to networkx Graph with attributes on edges and
# default attributes as dictionary data
X = nx.nx_agraph.from_agraph(A)
print("edges")
print(list(X.edges(data=True)))
print("default graph attributes")
print(X.graph)
print("node node attributes")
print(X.nodes.data(True))

Total running time of the script: ( 0 minutes 0.002 seconds)

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