pygraphviz_layout#

pygraphviz_layout(G, prog='neato', root=None, args='')[source]#

Create node positions for G using Graphviz.

Parameters:

GNetworkX graph: A graph created with NetworkX
progstring: Name of Graphviz layout program
rootstring, optional: Root node for twopi layout
argsstring, optional: Extra arguments to Graphviz layout program

Returns:

node_posdict: Dictionary of x, y, positions keyed by node.

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()}

Note that some graphviz layouts are not guaranteed to be deterministic, see graphviz/graphviz#1767 for more info.

Examples

>>> G = nx.petersen_graph()
>>> pos = nx.nx_agraph.graphviz_layout(G)
>>> pos = nx.nx_agraph.graphviz_layout(G, prog="dot")