numpy.fliplr#

numpy.fliplr(m)[source]#

Reverse the order of elements along axis 1 (left/right).

For a 2-D array, this flips the entries in each row in the left/rightdirection. Columns are preserved, but appear in a different order thanbefore.

Parameters:

marray_like

Input array, must be at least 2-D.

Returns:

fndarray

A view ofm with the columns reversed. Since a viewis returned, this operation is\(\mathcal O(1)\).

See also

flipud

Flip array in the up/down direction.

flip

Flip array in one or more dimensions.

rot90

Rotate array counterclockwise.

Notes

Equivalent tom[:,::-1] ornp.flip(m,axis=1).Requires the array to be at least 2-D.

Examples

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

>>>rng=np.random.default_rng()>>>A=rng.normal(size=(2,3,5))>>>np.all(np.fliplr(A)==A[:,::-1,...])True

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