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Find Duplicates in cellarrays / use of subsindex for cellarrays

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Léon
Léon 2012-10-31
关闭： MATLAB Answer Bot 2021-8-20
Hello,
I know how to find the duplicates in cellarrays but how can I reference the cellarray to filter out the duplicated or vice versa get a list with the duplicates etc.?
This is actually what I try to achieve, but the last line doesn't work on cellarrays, so what is the best way in this case? Thank you very much for your help beforehand:
A = {'A',1;'A',2;'B',3}
[C,IA,IC] = unique(A(:,1),'R2012a');
IA(A)
The result should be the following:
X = {'A',1;'B',3}
Y = {'A',2}

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回答（2 个）

Honglei Chen
Honglei Chen 2012-10-31
Is this what you are looking for?
X = A(IA,:)
Y = A(setdiff(1:3,A),:)
Andrei Bobrov
Andrei Bobrov 2012-10-31
A = {'A',1;'A',2;'B',3};
[b b c] = unique(A(:,1),'first');
out1 = A(b,:);
out2 = A(setdiff(1:numel(c),b),:);

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