Skip to main content
`Ctrl`+`K`
scipy.sparse.csgraph.

# csgraph_to_masked

scipy.sparse.csgraph.csgraph_to_masked(csgraph)

  Convert a sparse graph representation to a masked array representation.

  Added in version 0.11.0.

  Parameters:
    csgraph csr_array, csc_array, or lil_array

      Sparse representation of a graph.

  Returns:
    graph MaskedArray

      The masked dense representation of the sparse graph.

  Examples

      >>> from scipy.sparse import csr_array
      >>> from scipy.sparse.csgraph import csgraph_to_masked

      >>> graph = csr_array( [
      ... [0, 1, 2, 0],
      ... [0, 0, 0, 1],
      ... [0, 0, 0, 3],
      ... [0, 0, 0, 0]
      ... ])
      >>> graph
      <Compressed Sparse Row sparse array of dtype 'int64'
          with 4 stored elements and shape (4, 4)>

      >>> csgraph_to_masked(graph)
      masked_array(
        data=[[ --, 1.0, 2.0,  --],
              [ --,  --,  --, 1.0],
              [ --,  --,  --, 3.0],
              [ --,  --,  --,  --]],
        mask=[[ True, False, False,  True],
              [ True,  True,  True, False],
              [ True,  True,  True, False],
              [ True,  True,  True,  True]],
        fill_value=1e+20)