mindspore.ops.nonzero

mindspore.ops.nonzero(x)[source]

Return a Tensor of the positions of all non-zero values.

Parameters

x (Tensor) – The shape of Tensor is \((x_1, x_2, ..., x_R)\). The data type is Number or Bool.

Returns

Tensor, a 2-D Tensor whose data type is int64, containing the positions of all non-zero values of the input.

Raises

TypeError – If x is not Tensor.
ValueError – If ‘x’ dim equal to 0.

Supported Platforms:: Ascend GPU CPU

Examples

>>> import mindspore
>>> import numpy as np
>>> from mindspore import Tensor
>>> import mindspore.ops as ops
>>> x = Tensor(np.array([[[1,  0], [-5, 0]]]), mindspore.int32)
>>> output = ops.nonzero(x)
>>> print(output)
[[0 0 0]
 [0 1 0]]