# How to count the number of elements of several arrays inside an array?

6 views (last 30 days)
Jasmine Karim on 28 Aug 2018
Commented: OCDER on 30 Aug 2018
Not sure if there is an easy function for this. I have a 3x3 cell array, and inside each of those cells are arrays of various sizes. I want to calculate the length for each of these and store it, am trying to write a loop for this but not sure how to get it to read all the arrays vertically AND horizontally. Any suggestions?
18x5 cell 25x5 cell 46x5 cell
63x5 cell 77x5 cell 27x5 cell
34x5 cell 90x5 cell 19x5 cell
ie) the output would be {18, 25, 46; 63, 77, 27; 34, 90, 19}

OCDER on 28 Aug 2018
Edited: OCDER on 28 Aug 2018
T = [18 63 34 25 77 90 46 27 19];
C = cell(3);
for k = 1:length(T)
C{k} = cell(T(k), 5);
end
D = cellfun('size', C, 1);
D =
18 25 46
63 77 27
34 90 19
OCDER on 30 Aug 2018
iFI = num2cell(randi(5, 5)); %Is this a cell?
C = cell(size(iFI));
for k = 1:length(iFI)
C{k} = cell(iFI(k), 7);
%Can't use a cell as a index.
%cell(iFI(k), 7) == cell({#}, 7) =>
%ERROR: Conversion to double from cell is not possible.
%To fix, you need to get the integer value instead.
C{k} = cell(iFI{k}, 7); %use curly brackets {}, not parentheses ()
end
D = cellfun('size', C, 1);

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