numpy.fliplr — NumPy v1.13 Manual (original) (raw)

numpy. fliplr(m)[source]

Flip array in the left/right direction.

Flip the entries in each row in the left/right direction. Columns are preserved, but appear in a different order than before.

Parameters: m : array_like Input array, must be at least 2-D.
Returns: f : ndarray A view of m with the columns reversed. Since a view is returned, this operation is \mathcal O(1).

See also

flipud

Flip array in the up/down direction.

rot90

Rotate array counterclockwise.

Notes

Equivalent to m[:,::-1]. Requires the array to be at least 2-D.

Examples

A = np.diag([1.,2.,3.]) A array([[ 1., 0., 0.], [ 0., 2., 0.], [ 0., 0., 3.]]) np.fliplr(A) array([[ 0., 0., 1.], [ 0., 2., 0.], [ 3., 0., 0.]])

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