mutual array between two matrix

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alexaa1989
alexaa1989 2014-8-11
回答： Andrei Bobrov 2014-8-11
Hi everyone I need to eradicate mutual arrays between matrix Y and matrix Z and put the rest of Z in another matrix to make more clear:
Y=[8,4,2,1,7,3,5,6];
Z=[5,2,1,6,8,3,4,7];
Now I need to choose for example '2' and '7' in Y and consequently eliminate '2' and '7' in Z and keep the rest of Z (5,1,6,8,3,4) in for example R
can someone tell me how to code that?
thank you all in advance.
  1 个评论
Hikaru
Hikaru 2014-8-11
This question is not that clear to me. What are the conditions to pick '2' and '7' in Y?

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回答（3 个）

Iain
Iain 2014-8-11
Two ways:
R = setdiff(Z,Y);
That'll remove every element of Y that appears in Z.
Aleternatively, use this approach
R = Z;
eliminate_this = Y(1);
R(R == eliminate_this) = [];
You'll need to add in the right loops, and index Y correctly.
Azzi Abdelmalek
Azzi Abdelmalek 2014-8-11
Z=[5,2,1,6,8,3,4,7];
a=[2 7]
Z(ismember(Z,a))=[]
Andrei Bobrov
Andrei Bobrov 2014-8-11
k = [2, 7];
t = ismember(k,Y);
if all(t)
R = Z(~ismember(Z,k));
end

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