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

2 Stimmen

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
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.
madhan ravi
madhan ravi am 24 Aug. 2020
This answer does what you asked for.
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?
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

0 Stimmen

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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