compute the means of a 3-dimensional cell array.

Hi, I have a cell array C of size < 20x1x19 >, each one the 19 elements contains a set of 20 matrices of size (80x90), How can I want to compute the mean of each 20 matrix and store the result in a matrix M so that in the end I will have a Matrix of size 80x90x19 containing the means of the cell array matrices.

for example:

M(:,:,1) will have the mean of elements in C(:,:,1);

M(:,:,2) will have the mean of elements in C(:,:,2)

and so on. Thank you very much.

[Azzi Abdelmalek]

you 20x19x20 matrices, you can't obtain 80x90*19

[Ali]

It's a cell array of size 20x1x19 each of its element contains 20 matrix of size 80x90

C(:,:,1) =

    [80x90 double]
    [80x90 double]
    [80x90 double]
    [80x90 double]
    [80x90 double]
    [80x90 double]
    [80x90 double]
    [80x90 double]
    [80x90 double]
    [80x90 double]
    [80x90 double]
    [80x90 double]
    [80x90 double]
    [80x90 double]
    [80x90 double]
    [80x90 double]
    [80x90 double]
    [80x90 double]
    [80x90 double]
    [80x90 double]

I want to compute the mean of 20 (80x90) mtrices and put the result in matrix M(80,90,1)

and so on until M(80,90,19) which will contains the mean of elements in C(:,:,19).

Answer 1

[Andrei Bobrov]

Here C - cell array of 20x1x19

C{1} - a double array of 80 x 90

sC = size(C);
out0 = mean(cell2mat(reshape(C,1,1,sC(1),[])),3);
out = reshape(out0,[size(C{1}),sC(3)]);

[Ali]

Hi Dear Andrei Bobrov;

your solution is working is working very well.

Can you explain me what you did ?

thank you very much.