nonzero — SciPy v1.15.2 Manual (original) (raw)
scipy.sparse.csr_array.
Nonzero indices of the array/matrix.
Returns a tuple of arrays (row,col) containing the indices of the non-zero elements of the array.
Examples
from scipy.sparse import csr_array A = csr_array([[1, 2, 0], [0, 0, 3], [4, 0, 5]]) A.nonzero() (array([0, 0, 1, 2, 2], dtype=int32), array([0, 1, 2, 0, 2], dtype=int32))