numpy.tril_indices_from — NumPy v1.11 Manual (original) (raw)

numpy.tril_indices_from(arr, k=0)[source]¶

Return the indices for the lower-triangle of arr.

See tril_indices for full details.

Parameters:	arr : array_like The indices will be valid for square arrays whose dimensions are the same as arr. k : int, optional Diagonal offset (see tril for details).