networkx.drawing.nx_agraph.pygraphviz_layout¶
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pygraphviz_layout
(G, prog='neato', root=None, args='')[source]¶ Create node positions for G using Graphviz.
- Parameters
G (NetworkX graph) – A graph created with NetworkX
prog (string) – Name of Graphviz layout program
root (string, optional) – Root node for twopi layout
args (string, optional) – Extra arguments to Graphviz layout program
- Returns
node_pos – Dictionary of x, y, positions keyed by node.
- Return type
Examples
>>> G = nx.petersen_graph() >>> pos = nx.nx_agraph.graphviz_layout(G) >>> pos = nx.nx_agraph.graphviz_layout(G, prog="dot")
Notes
If you use complex node objects, they may have the same string representation and GraphViz could treat them as the same node. The layout may assign both nodes a single location. See Issue #1568 If this occurs in your case, consider relabeling the nodes just for the layout computation using something similar to:
>>> H = nx.convert_node_labels_to_integers(G, label_attribute="node_label") >>> H_layout = nx.nx_agraph.pygraphviz_layout(G, prog="dot") >>> G_layout = {H.nodes[n]["node_label"]: p for n, p in H_layout.items()}