fliplr - Flip array left to right - MATLAB (original) (raw)

Syntax

Description

B = fliplr([A](#bt6yqfk-1-A)) returns A with its columns flipped in the left-right direction (that is, about a vertical axis).

If A is a row vector, then fliplr(A) returns a vector of the same length with the order of its elements reversed. If A is a column vector, then fliplr(A) simply returns A. For multidimensional arrays, fliplr operates on the planes formed by the first and second dimensions.

example

Examples

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Create a row vector.

A = 1×10

 1     2     3     4     5     6     7     8     9    10

Use fliplr to flip the elements of A in the horizontal direction.

B = 1×10

10     9     8     7     6     5     4     3     2     1

The order of the elements in B is reversed compared to A.

Create a 3-by-3 cell array of characters.

A = {'a' 'b' 'c'; 'd' 'e' 'f'; 'g' 'h' 'i'}

A = 3×3 cell {'a'} {'b'} {'c'} {'d'} {'e'} {'f'} {'g'} {'h'} {'i'}

Change the order of the columns in the horizontal direction by using fliplr.

B = 3×3 cell {'c'} {'b'} {'a'} {'f'} {'e'} {'d'} {'i'} {'h'} {'g'}

The order of the first and third columns of A is switched in B, while the second column remains unchanged.

Create a multidimensional array.

A = cat(3, [1 2; 3 4], [5 6; 7 8])

A = A(:,:,1) =

 1     2
 3     4

A(:,:,2) =

 5     6
 7     8

A is an array of size 2-by-2-by-2.

Flip the elements on each page of A in the horizontal direction.

B = B(:,:,1) =

 2     1
 4     3

B(:,:,2) =

 6     5
 8     7

The result, B, is the same size as A, but the horizontal order of the elements is flipped. The operation flips the elements on each page independently.

Input Arguments

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Input array, specified as a vector, matrix, multidimensional array, table, or timetable.

Complex Number Support: Yes

Tips

fliplr(A) is equivalent to flip(A,2).
Use the flipud function to flip arrays in the vertical direction (that is, about a horizontal axis).
The flip function can flip arrays in any direction.

Extended Capabilities

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Thefliplr function fully supports tall arrays. For more information, see Tall Arrays.

Usage notes and limitations:

Does not support cell arrays.

The fliplr function fully supports GPU arrays. To run the function on a GPU, specify the input data as a gpuArray (Parallel Computing Toolbox). For more information, see Run MATLAB Functions on a GPU (Parallel Computing Toolbox).

Version History

Introduced before R2006a