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find values in vector present in cell array

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Elysi Cochin
Elysi Cochin on 17 Mar 2020
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Edited: Andrei Bobrov on 17 Mar 2020
我有一个单元阵列cA和向量V值
cA = {[11,21,3;14,5,63], [11,22], [33;95;66;7]};
V = [14 22 33 66];
i wanted to find which all values in V are there in cA and its position
output = { [ 0 0 0 1 0 0], [1 2], [3 0 4 0] }

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Accepted Answer

Andrei Bobrov
Andrei Bobrov on 17 Mar 2020
Edited:Andrei Bobrov on 17 Mar 2020
out = cell(size(cA));
fori = 1:numel(out)
x = ca {i}';
[~,out{i}] = ismember(x(:)',V);
end
or with cellfun
[~,out] = cellfun(@(x)ismember(reshape(x',1,[]),V),cA,'un',0);

More Answers (1)

Ahmed Anas
Ahmed Anas on 17 Mar 2020
Dear, Always use matrix instead of cell arrays, working with matrix is really easy as compared to cell arrays. In the code below, i have split cA matrix into three small matrices and then checked the entities which are present in vector V. Afterwards compile the entire output matrix.
%%Splitting cA matrix into three consistent matrices
cA1 = [11,21,3;14,5,63]
cA2 = [11,22]
cA3 = [33;95;66;7]
V = [14 22 33 66];
%%检查CA1实体
[Lia,Locb1] = ismember(cA1,V)
reshape(Locb1,1,[])
transpose(Locb1)
Locb1.'
Locb1(:)
Locb1=reshape(Locb1.',1,[])
%%检查CA2实体
[Lia,Locb2] = ismember(cA2,V)
Locb2=reshape(Locb2,1,[])
%%检查CA3实体
[Lia,Locb3] = ismember(cA3,V)
Locb3=reshape(Locb3,1,[])
Output=cell2mat({Locb1,Locb2,Locb3})
2 Comments
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Ahmed Anas
Ahmed Anas on 17 Mar 2020
I am unable to understand [11 22 3;44] in cA = {[11,22,3;44], [14,22]};
它的尺寸应该是一致的

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