Using vertcat for cell array of differing length
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I have a 3 x 2 cell array consisting of elements that are vectors 1 x N where N changes. How do I find the vector of minimum length in the cell array and vertically concatenate based on the length of that vector?
2 Comments
Jonas
on 4 May 2022
Edited: Jonas
on 4 May 2022
it also depends, if you want the minimum length per cell column or if you want all vectors to be cut down to the smallest vector length of all cells. start with
lengthMatrix=cellfun(@numel,yourCell)
to get a matrix of vector lengths, then continue with eg
minLength=min(lengthMatrix,[],'all')
cellWithCutEntries=cellfun(@(in) in(1:minLength),yourCell)
and a
cell2mat(cellWithCutEntries)
call at the end
this concatenates all vectors off all cells using the minimum length
Answers (1)
KSSV
on 4 May 2022
Edited: KSSV
on 4 May 2022
% Make dummy data for demo
A = cell(3,2) ;
for i = 1:3
for j = 1:2
N = randperm(10,1) ;
A{i,j} = rand(1,N) ;
end
end
% Get length
L = cellfun(@numel,A) ;
% Join L < 5 arrays
idx = L < 5 ; % GEt indices of cell arrays whos length is less than 5
B = A(idx) ;
iwant = horzcat(B{:}) % join the cell arrays
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