Compare two matrix and delete the same rows

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Patrick
Patrick 2014-10-27
回答： Andrei Bobrov 2014-10-27
Say I have A= [1 2 3, 4 5 6, 6 7 8] and B= [4 5 7, 1 2 3, 7 6 4, 6 7 8]. How can I delete the rows in B that are the same with A? The result desired is B=[4 5 7, 7 6 4]
Thanks!

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回答（3 个）

Azzi Abdelmalek
Azzi Abdelmalek 2014-10-27
编辑：Azzi Abdelmalek 2014-10-27
A= [1 2 3; 4 5 6; 6 7 8]
B= [4 5 7; 1 2 3; 7 6 4; 6 7 8]
B(ismember(B,A,'rows'),:)=[]
Andrei Bobrov
Andrei Bobrov 2014-10-27
setdiff(B,A,'rows')
David Sanchez
David Sanchez 2014-10-27
A= [1 2 3; 4 5 6; 6 7 8];
B= [4 5 7; 1 2 3; 7 6 4; 6 7 8];
Lia = ismember(B,A,'rows');
B_new = B(~Lia,:)
B_new =
4 5 7
7 6 4

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