MATLAB Function Reference

intersect

Set intersection of two vectors

Syntax

c = intersect(a,b)
c = intersect(A,B,'rows')
[c,ia,ib] = intersect(...)

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. 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,:)).

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, setdiff, setxor, union, unique

interpstreamspeed

inv