MATLAB: How to reshape a matrix

Question

Suppose I have a 2D matrix (6,3) as follows

A

1 2 3

4 5 6

7 8 9

10 11 12

13 14 15

16 17 18

Now I want to reshape into one 3D matrix (3,3,2) like as follows:

A_3D(:, :, 1)

1 2 3

4 5 6

7 8 9

A_3D(:, :, 2)

10 11 12

13 14 15

16 17 18

How I can achieve that with an efficient way?

Thank you

Answer 1

Combination of reshape and permute

permute(reshape(A, 3, size(A,1)/3, []), [1 3 2])