Extract values by matching column values
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Friends, I have two matrices, a and b. a= [ 1 2 3 ; 4 5 6] and b = [1 2 3 4 ; 4 5 6 10]. I want to extract the fourth column of matrix b by matching first three columns of a & b.
Thanks
回答（1 个）
Andrei Bobrov
2017-5-11
[C,ia,ib] = setxor(a',b','rows');
out = C';
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2017-5-10
2017-5-11
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