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Adding cell array entries

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AA
AA on 23 Aug 2020
Commented: madhan ravi on 24 Aug 2020
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

Walter Roberson
Walter Roberson on 23 Aug 2020
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
madhan ravi
madhan ravi on 24 Aug 2020
nd = ndims(CC{1,1});
sol = sum(cat(nd+1, CC{:,1}),nd+1);

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More Answers (1)

Sara Boznik
Sara Boznik on 23 Aug 2020
for i=1:24
sol=sum((CC(:,i)))
end
  1 Comment
Walter Roberson
Walter Roberson on 23 Aug 2020
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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