Reshape n-th dimension of an array

I have an 285x51xn array. I need to reshape it in 3rd (n) dimension. Essentialy, I want to rotate all layers of 285x51 matrix 90 degrees and flip them upside down and then save as 285x51xn array.

I have written the following code but it gives an error that dimensions mismath. I feel there is a problem with indexing.

for k = 1:length(test(1, 1, :))
    test(:,:,k)=rot90(test(:,:,k));
    test(:,:,k)=flipud(test(:,:,k))
end

Please, correct me.

Answer 1

[Bruno Luong]

You operation makes the array changing its size, you can't use for-loop to store the rotated page in the SAME arrray.

And btw fllipupd(rot90(...)) is simply exchange the first 2 dimensions

test = permute(test,[2 1 3]);

[zdarova_koresh]

Brilliantly! I have not even noticed it.