Unfold 3D I x J x K to 2D I x JK

Hi,

I am trying to unfold a matrix in the form I x J x K to I x JK corresponding to I batches, J variables and K time periods (within the batch).

I currently have got this matrix:

And I need it in the form:

How would I go about doing this as I think reshape is inadequate?

Thanks

[madhan ravi]

Illustration with a simple example would be better.

Answer 1

[KALYAN ACHARJYA]

"I am trying to unfold a matrix in the form I x J x K to I x JK"

May be: Are you looking for this one?

[R C D]=size(M);
X=reshape(M,R,C*D)

I ignored this part "corresponding to I batches, J variables and K time periods (within the batch). "

Answer 2

[Bruno Luong]

X=M(:,:)