Displaying arrows associated to edges in directed graphs

[giorgiog]

Hi,

I would obtain a more evident graphical representation of the arrows in graph edges.

This is what I currently use:

    pos=nx.circular_layout(G)

    nx.draw_networkx_nodes(G,pos,node_size=6000,node_color='y')

    nx.draw_networkx_labels(G, pos, labels, font_size=11)

    nx.draw_networkx_edge_labels(G, pos, edge_labels=edge_labels)                        

    nx.draw_networkx_edges(G, pos, edge_color='b', alpha = 0.5, arrows=True)

    plt.show()

However I do not like very much how arrows are plotted.

Please, any suggestions ? Thanks

Giorgio

[Aric Hagberg]

Hi Giorgio - Unfortunately there is no better way so far to draw
arrows with NetworkX/Matplotlib.
You might try using graphviz (graphviz.org) which makes beautiful
directed graph drawings. You can create a "dot" file suitable for
input to graphviz with networkx.write_dot(G,filename).

Aric

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[giorgiog]

Thanks. Anyway, I improved a little bit by taking advantage of the width parameter:

nx.draw_networkx_edges(G, pos, edge_color='b', alpha = 0.5, width=3, arrows=True)