Convert matrix 3d into 2d

Hello all,

I have matrix (a*b*n) (3d matrix), I would like to convert it into n 2D matrix (a*b). Can someone help me, please?

Jonathan

[Rik]

Do you want to just select 1 slice, sum the slices, take the mean of the slices, do something else?

[Jonathan Demmer]

Thank you for your answer.

I would like to create n matrix with dimension(a*b) from a 3D matrix (a*b*n). n is the temporal parameters of the 3 d matrix, I would like that each time step is in a new 2D matrix. Is that clearer?

Answer 1

[Matt J]

Calling your matrix A,

Acell=num2cell(A,[1,2]);

[Jonathan Demmer]

Hello,

Thank you for the answer, but it does not seem to work properly as it does not create n 2D matrix from a 3D matrix (a*b*n).

[Matt J]

Yes, it does. Example,

>> A=rand(2,3,4);
>> Acell=num2cell(A,[1,2]); Acell=Acell(:)

Acell =

  4×1 cell array

    {2×3 double}
    {2×3 double}
    {2×3 double}
    {2×3 double}

Each Acell{i} behaves in all ways like a separate 2x3 image variable. It has its own memory block and everything.

[Jonathan Demmer]

How can i extract the value from each matrix?

[Rik]

Just as Matt wrote: use curly brackets.

Acell{2}

[Matt J]

Jonathan Demmer's answer converted to a comment:

Thank you everybody, it work s well indeed...

Regards

Jonathan

[Matt J]

You are welcome, but since it did work, please Accept-click the answer.