aesara.tensor.tril_indices#

aesara.tensor.tril_indices(n: Union[int, ScalarVariable], k: Union[int, ScalarVariable] = 0, m: Optional[Union[int, ScalarVariable]] = None) → Tuple[TensorVariable, TensorVariable][source]#

Return the indices for the lower-triangle of an (n, m) array.

Parameters:

  • n (integer scalar) – The row dimension of the arrays for which the returned indices will be valid.

  • k (integer scalar, optional) – Diagonal offset to use when forming the indices. k = 0 (the default) is the main diagonal, k < 0 is below it and k > 0 is above.

  • m (integer scalar, optional) – The column dimension of the arrays for which the returned arrays will be valid. By default m is taken equal to n.

Returns:

inds – The indices for the triangle. The returned tuple contains two arrays, each with the indices along one dimension of the array.

Return type:

tuple of TensorVariable’s