Adding cell array entries

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AA
AA am 23 Aug. 2020
Kommentiert: madhan ravi am 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

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Walter Roberson
Walter Roberson am 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 Kommentare
AA
AA am 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?
madhan ravi
madhan ravi am 24 Aug. 2020
nd = ndims(CC{1,1});
sol = sum(cat(nd+1, CC{:,1}),nd+1);

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Weitere Antworten (1)

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