mxnet.np.flipud

flipud(*args, **kwargs)

Flip array in the up/down direction.

Flip the entries in each column in the up/down direction. Rows are preserved, but appear in a different order than before.

Parameters

m (array_like) – Input array.

Returns

out – A view of m with the rows reversed. Since a view is returned, this operation is \(\mathcal O(1)\).

Return type

array_like

See also

fliplr()

Flip array in the left/right direction.

rot90()

Rotate array counterclockwise.

Notes

Equivalent to m[::-1,...]. Does not require the array to be two-dimensional.

Examples

>>> A = np.diag(np.array([1.0, 2, 3]))
>>> A
array([[1.,  0.,  0.],
       [0.,  2.,  0.],
       [0.,  0.,  3.]])
>>> np.flipud(A)
array([[0.,  0.,  3.],
       [0.,  2.,  0.],
       [1.,  0.,  0.]])

>>> A = np.random.randn(2,3,5)
>>> np.all(np.flipud(A) == A[::-1,...])
array(True)

>>> np.flipud(np.array([1,2]))
array([2., 1.])