`scipy.sparse.csgraph._tools:csgraph_masked_from_dense`

Signature

   def     csgraph_masked_from_dense (    graph    ,    null_value    =  0   ,    nan_null    =  True   ,    infinity_null    =  True   ,    copy    =  True     )

Summary

Construct a masked array graph representation from a dense matrix.

Extended Summary

Parameters

graph : array_like: Input graph. Shape should be (n_nodes, n_nodes).
null_value : float or None (optional): Value that denotes non-edges in the graph. Default is zero.
infinity_null : bool: If True (default), then infinite entries (both positive and negative) are treated as null edges.
nan_null : bool: If True (default), then NaN entries are treated as non-edges

Returns

csgraph : MaskedArray: masked array representation of graph

Examples

from scipy.sparse.csgraph import csgraph_masked_from_dense

✓

graph = [
[0, 1, 2, 0],
[0, 0, 0, 1],
[0, 0, 0, 3],
[0, 0, 0, 0]
]

✓

csgraph_masked_from_dense(graph)

✗

Aliases

scipy.sparse.csgraph.csgraph_masked_from_dense