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# Atlas

An example showing how to write first 20 graphs from the graph atlas as graphviz dot files Gn.dot where n=0,19.

TODO: does nx_agraph.draw support multiple graphs in one png?

    Graph named 'G0' with 0 nodes and 0 edges
    Graph named 'G1' with 1 nodes and 0 edges
    Graph named 'G2' with 2 nodes and 0 edges
    Graph named 'G3' with 2 nodes and 1 edges
    Graph named 'G4' with 3 nodes and 0 edges
    Graph named 'G5' with 3 nodes and 1 edges
    Graph named 'G6' with 3 nodes and 2 edges
    Graph named 'G7' with 3 nodes and 3 edges
    Graph named 'G8' with 4 nodes and 0 edges
    Graph named 'G9' with 4 nodes and 1 edges
    Graph named 'G10' with 4 nodes and 2 edges
    Graph named 'G11' with 4 nodes and 2 edges
    Graph named 'G12' with 4 nodes and 3 edges
    Graph named 'G13' with 4 nodes and 3 edges
    Graph named 'G14' with 4 nodes and 3 edges
    Graph named 'G15' with 4 nodes and 4 edges
    Graph named 'G16' with 4 nodes and 4 edges
    Graph named 'G17' with 4 nodes and 5 edges
    Graph named 'G18' with 4 nodes and 6 edges
    Graph named 'G19' with 5 nodes and 0 edges

    import networkx as nx

    atlas = nx.graph_atlas_g()[0:20]

    for G in atlas:
        print(G)
        A = nx.nx_agraph.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")

    # Draw the 20th graph from the atlas to png
    A.draw("A20.png", prog="neato")

Total running time of the script: (0 minutes 0.064 seconds)

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