convert a 3D matrix to a 2D matrix

Hello,

I'm trying to convert a A by B by C matrix (3D) into a A*C by B matrix (2D). But I need the column (with A*C elements) to be not stacked, but alternated. To explain,

I would like to convert a 2 by 2 by 3 matrix X:

val(:,:,1) =

1 2

1 2

val(:,:,2) =

2 3

2 3

val(:,:,3) =

3 4

3 4

into 2*3 by 2 matrix:

[1 2

2 3

3 4

1 2

2 3

3 4]

I have tried:

X1=permute(X,[1 3 2]);

X2=reshape(X1,[6,2]);

but it generates:

X2 =

1 2

1 2

2 3

2 3

3 4

3 4

which is NOT what I want.

Is there a way to do this? Any advice appreciated!

Answer 1

[madhan ravi]

 reshape(permute(val, [2, 1, 3]), size(val, 2), []).'

[Ara Jo]

But this generates X2, which is not what I'm trying to get?

[madhan ravi]

 X2 = reshape(permute(val, [3, 1, 2]), [], size(val, 2))

Answer 2

[KSSV]

iwant = X2 ;
iwant(1:2:end,:) = X2(1:3,:) ; 
iwant(2:2:end,:) = X2(4:end,:) ;