rot90(m, k=1, axes=(0, 1))

Rotation direction is from the first towards the second axis.

Notes

rot90(m, k=1, axes=(1,0)) is the reverse of rot90(m, k=1, axes=(0,1))

rot90(m, k=1, axes=(1,0)) is equivalent to rot90(m, k=-1, axes=(0,1))

Parameters

m : array_like

Array of two or more dimensions.

k : integer

Number of times the array is rotated by 90 degrees.

axes: (2,) array_like :

The array is rotated in the plane defined by the axes. Axes must be different.

versionadded

Returns

y : ndarray

A rotated view of m.

Rotate an array by 90 degrees in the plane specified by axes.

See Also

flip

Reverse the order of elements in an array along the given axis.

fliplr

Flip an array horizontally.

flipud

Flip an array vertically.

Examples

>>> m = np.array([[1,2],[3,4]], int)
... m
array([[1, 2],
       [3, 4]])

>>> np.rot90(m)
array([[2, 4],
       [1, 3]])

>>> np.rot90(m, 2)
array([[4, 3],
       [2, 1]])

>>> m = np.arange(8).reshape((2,2,2))
... np.rot90(m, 1, (1,2))
array([[[1, 3],
        [0, 2]],
       [[5, 7],
        [4, 6]]])

See :

Back References

The following pages refer to to this document either explicitly or contain code examples using this.

numpy.fliplr numpy.flipud

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