how reshape this matrix in matlab? thx

I have this matrix: for example:

into:

how can I do it without using loop? can mat2cell be useful in this case?

many thanks!!

[Stephen23]

Try the transpose operator: given a matrix X, then the transpose is X.'

Answer 1

[Matt J]

If the 3x3 blocks are symmetric, as in your example, a simple transpose is all you need. If, more generally, they are not, however,I would recommend MAT2TILES ( Download ) as follows

    C=mat2tiles(YourMatrix,[3,3]);
    YourMatrixReshaped = cell2mat(C.')

[Stephen23]

Mathematically correct, but it probably would be still best to introduce beginners to the nonconjugate transpose: .'

Answer 2

[the cyclist]

If your original matrix is A, then transpose it:

B = A'

[This is actually the complex conjugate transpose, but assuming your matrix is real, that's OK. You can read more with "doc transpose" and "doc ctranspose".]