column wise reshaping of the 3rd dimension?

I have a 3d matrix A

A(:,:,1) =
1   2 ;
3   4 

A(:,:,2) =
100  200 ;
300  400 

A(:,:,3) =
1000  2000 ;
3000  4000

I want to reshape the data in such a way:

1   100   1000    2   200   2000   3   300   3000  4  400  4000

(Column wise reshaping of 3rd dimension)

Following code do row wise reshaping of 3rd dimension

AA =reshape(A ,[size(A,1)*size(A,2) size(A,3)]);
AA2=AA(:);

How I can do column wise reshaping?

Thanks

Answer 1

[Cedric]

 >> AA = reshape( permute(A, [3,2,1]), 1, [] )
 AA =
      1  100  1000  2  200  2000  3  300  3000  4  400  4000