prtools.sparray#

sparray(m, index=None)[source]#

Create a sparse array from a dense matrix

Parameters:

  • m (array_like) – Dense matrix to be reformed as a sparse vector

  • index (spindex) – Corresponding index object

Returns:

Sparse vector

Return type:

ndarray

See also

  • spmatrix() Create a dense matrix from a sparse array

  • spindex() Create a sparse coordinate list (COO) index object