rustworkx.generators.directed_grid_graph#

directed_grid_graph(rows=None, cols=None, weights=None, bidirectional=False, multigraph=True)#

Generate a directed grid graph.

The edges propagate towards right and bottom direction if bidirectional is False

Parameters:

  • rows (int) – The number of rows to generate the graph with. If specified, cols also need to be specified.

  • cols (int) – The number of cols to generate the graph with. If specified, rows also need to be specified. rows*cols defines the number of nodes in the graph.

  • weights (list) – A list of node weights. Nodes are filled row wise. If rows and cols are not specified, then a linear graph containing all the values in weights list is created. If number of nodes(rows*cols) is less than length of weights list, the trailing weights are ignored. If number of nodes(rows*cols) is greater than length of weights list, extra nodes with None weight are appended.

  • bidirectional – A parameter to indicate if edges should exist in both directions between nodes. Defaults to False.

  • multigraph (bool) – When set to False the output PyDiGraph object will not be not be a multigraph and won’t allow parallel edges to be added. Instead calls which would create a parallel edge will update the existing edge.

Returns:

The generated grid graph

Return type:

PyDiGraph

Raises:

IndexError – If neither rows or cols and weights are specified

import rustworkx.generators
from rustworkx.visualization import mpl_draw

graph = rustworkx.generators.directed_grid_graph(2, 3)
mpl_draw(graph)
../_images/rustworkx.generators.directed_grid_graph_0_0.png