Finding row indices of a cell array containing a certain element

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I hae the following cell array.
arr = cell(4,1);
arr{1,1}=1:3:15;
arr{2,1}=2:2:20;
arr{3,1}=3:3:30;
arr{4,1}=0:4:10;
%% I need to find the row indices of cells containing the element '4', i.e., the output should be
% k = [1;2;4]

Risposte (1)

Rik
Rik il 9 Mar 2022
A simple loop should do:
arr = cell(4,1);
arr{1,1}=1:3:15;
arr{2,1}=2:2:20;
arr{3,1}=3:3:30;
arr{4,1}=0:4:10;
L=false(numel(arr),1);
for n=1:numel(arr)
L(n)=ismember(4,arr{n});
end
k=find(L)
k = 3×1
1 2 4

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