Concatenate 2D matrices into one 3D matrix with for loop

I have a structure containing 557 376 x 376 double matrices. How do I concatenate the 2D matrices to create a 3D matrix with the size 376 x 376 x 557?

[Johanna Popp]

I tried this, but didn't seem to work:

data_cell = struct2cell(data)

% convert structure into cell to be able to access individual matrices

% Individual matrices are accessed as follows: matrix_n = data_cell{n,1}.matrix

for k = 1:557

data_3D_matrix = cat(k,data_cell{k,1}.matrix)

end

[Stephen23]

"Concatenate 2D matrices into one 3D matrix with for loop"

Is there a particular requirement to use a FOR loop?

Answer 1

[Stephen23]

C = struct2cell(data);
A = cat(3,C{:});

https://www.mathworks.com/help/matlab/matlab_prog/comma-separated-lists.html

https://www.mathworks.com/matlabcentral/answers/320713-how-to-operate-on-comma-separated-lists

[Johanna Popp]

Thanks! But now I'm getting a structure with the dimensions 1x1x557 that has the string 'matrix' in it and not the actual 376x376 matrix of values...

[Stephen23]

Please upload your actual data by clicking the paperclip button.