intersect - Find set intersection of two vectors
Syntax
c = intersect(A, B)
c = intersect(A, B, 'rows')
[c, ia, ib] = intersect(a, b)
Description
c = intersect(A, B) returns
the values common to both A and B.
In set theoretic terms, this is A[[INTERSECT]]
B. Inputs A and B can be numeric
or character vectors or cell arrays of strings. The resulting vector
is sorted in ascending order.
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. ˋMATLAB ignores
the rows flag for all cell arrays.
[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,:)).
Remarks
Because NaN is considered to be not equal to itself, it is never
included in the result c.
Examples
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
See Also
ismember, issorted, setdiff, setxor, union, unique
 | interpstreamspeed | | intmax |  |
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