How to check the MATRIX is flip or not

Hello everyone,

Suppose I have matrix A as shown below,

A = [1 2 3 4 3 2 1
     2 3 4 5 4 3 2
     2 3 4 5 4 3 2
     1 2 3 4 3 2 1]

The first and second row are flipped into third and fourth row at the center in x-direction and I can checked it easily.

Now, If I have a large size of matrix, i.e. [500 x 200].

Do we have any way to check this large matrix is flipped (in x-direction) ?

I really need your help.

Thanks in advance.

[Rik]

What exactly do you mean by flipped? Do you mean the first row is flipped left to right and appears elsewhere in the array?

Answer 1

[DGM]

It's unclear what you're actually asking for, but I'm going to guess it's one of the two:

A = [1 2 3 4 3 2 1
    2 3 4 5 4 3 2
    2 3 4 5 4 3 2
    1 2 3 4 3 2 1];

ishsymmetric = isequal(A,flip(A,2))

ishsymmetric = logical
   1

isvsymmetric = isequal(A,flip(A,1))

isvsymmetric = logical
   1

[Trang Hu Jia]

This is all i want.

Thank you very much, this help me a lot.