mindspore.ops.rot90

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mindspore.ops.rot90(input, k, dims)[source]

Rotate a n-D tensor by 90 degrees in the plane specified by dims axis. Rotation direction is from the first towards the second axis if k > 0, and from the second towards the first for k < 0.

Parameters

  • input (Tensor) – Input tensor.

  • k (int) – Number of times to rotate.

  • dims (Union[list(int), tuple(int)]) – Axis to rotate.

Returns

Tensor.

Raises

  • TypeError – If input is not a Tensor.

  • TypeError – If k is not integer.

  • TypeError – If dims is not tuple of integers or list of ints.

  • ValueError – If the length of dims is not 2.

  • ValueError – If any dims is out of Tensor’s range [-input.ndim, input.ndim).

  • RuntimeError – If rotation dims are not different.

Supported Platforms:

Ascend GPU CPU

Examples

>>> import numpy as np
>>> from mindspore import Tensor, ops
>>> x = Tensor(np.array([[0, 1], [2, 3]])).astype(np.float32)
>>> k = 1
>>> dims = [0, 1]
>>> output = ops.rot90(x, k, dims)
>>> print(output)
[[1. 3.]
[0. 2.]]