Adding cell array entries

Suppose you have a 162*24 cell array called CC and each cell array entry consist of a matrix.
How would you add CC{1,1}+CC{2,1}+CC {3,1}.....CC{162,1}
and then to the same for the remaining 23 columns.
I dont need the sum but all matrices within each cell entry have to be added.
Thanks

 Accepted Answer

nd = ndims(CC{1,1});
sol = sum(cat(ndims+1, CC{:,1}),ndims+1);
There are also approaches using the more obscure fold() operation.

4 Comments

AA
AA on 24 Aug 2020
Thanks but I dont need the sum. All I need is that the matrices in each cell entry to be added. All matrices have the same dimensions.
This answer does what you asked for.
AA
AA on 24 Aug 2020
I get an error Not enough input arguments and and also an unspecific error in the second line. Maybe the nd variable is missing in the second line?
nd = ndims(CC{1,1});
sol = sum(cat(nd+1, CC{:,1}),nd+1);

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More Answers (1)

for i=1:24
sol=sum((CC(:,i)))
end

1 Comment

No, not for a cell array. sum() does not apply to cell arrays.
Also, you are overwriting all of sol each iteration.

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Asked:

AA
on 23 Aug 2020

Commented:

on 24 Aug 2020

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