MATLAB: Creating a 3-dim matrix from an array and a 2-dim matrices array

Question

I am trying to create a 3-dimensional matrix (e.g. 80 x 300 x 350) from an array (dim 80) and an array of 80 300 x 350 matrices. The second dimension in matrices may vary, so it needs to be padded by 0.

Any hint is welcome.

I have tried this:

for i=1:80
res(i,:,:)=cell2mat(s1(i));
end

and got this:

Subscripted assignment dimension mismatch.

Thank you

Answer 1

Close! but using :,: means that it must fill the whole thing, not pad with zeros. Instead, only fill to the size:

for i=1:80
  sii = cell2mat(s1(i));
  res(i,1:size(sii,1),1:size(sii,2)) = permute(sii,[3 1 2]); % permute to write orientation
end