MATLAB Functions Help Desk

intersect

Purpose

Set intersection of two vectors

Syntax

Description

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. Non-vector input arrays are regarded as column vectors a = A(:) or
b = B(:).

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,:)).

Examples

See Also

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



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