| MATLAB Function Reference | Search Help Desk |
| intersect | Examples See Also |
Set intersection of two vectors
c = intersect(a,b) c = intersect(A,B,'rows') [c,ia,ib] = intersect(...)
c = intersect(a,b)
returns the values common to both a and b. The resulting vector is sorted in ascending order. In set theoretic terms, this is a
b. a and b can be cell arrays of strings.
c = intersect(A,B,'rows')
when A and B are matrices with the same number of columns returns the rows common to both A and B.
[c,ia,ib] = intersect(a,b)
also returns column index vectors ia and ib such that c = a(ia) and c = b(ib) (or c = a(ia,:) and c = b(ib,:)).
A = [1 2 3 6]; B = [1 2 3 4 6 10 20];
[c,ia,ib] = intersect(A,B);
disp([c;ia;ib])
1 2 3 6
1 2 3 4
1 2 3 5
ismember True for a set member
setdiff Return the set difference of two vectors
setxor Set exclusive-or of two vectors
union Set union of two vectors
unique Unique elements of a vector