How to sum a single column of a cell whose content are vectors

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Hudson Romualdo
Hudson Romualdo 2022-10-11
回答： Andres 2022-10-11
How to sum a single column of a cell whose content is a vector?
data = cell(20,2);
for i=1:20
data{i,1} = i;
data{i,2} = rand(1,13);
end
My goal is to sum all values of column 2 (that are vectors) in one scallar.

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采纳的回答

Andres
Andres 2022-10-11
Using cellfun is fine, but use it with the sum function.
data = cell(20,2);
for i=1:20
data{i,1} = i;
data{i,2} = rand(1,13);
end
value = sum(cellfun(@sum,data(:,2)))

更多回答（1 个）

David Hill
David Hill 2022-10-11
编辑：David Hill 2022-10-11
Ran in:
Simple loop.
data = cell(20,2);
for i=1:20
data{i,1} = i;
data{i,2} = rand(1,13);
end
s=0;
for k=1:size(data,1)
s=s+sum(data{k,2});
end
s
s = 129.3577
  3 个评论
显示 1更早的评论
David Hill
David Hill 2022-10-11
Ran in:
data = cell(20,2);
for i=1:20
data{i,1} = i;
data{i,2} = rand(1,13);
end
s=sum(arrayfun(@(x)sum(data{x,2}),1:size(data,1)))
s = 135.0550

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