intersect

Syntax

intersect(a,b)

intersect(a,b,'rows')

[x,y,z] = intersect(a,b)

Inputs

a,b

The sets to search for common elements in.

Type: double | integer | char | string | logical | struct | cell

Dimension: scalar | string | vector | matrix

'rows'

Specifies to search for common rows as opposed to common elements.

Type: double | integer | char | string | logical | struct | cell

Dimension: scalar | string | vector | matrix

Outputs

R

Common elements in ascending order.

x,y,z

x is the list of elements common to both sets (a and b).

y and z are the indices, for a and b, of the elements of x. They correspond to a(y)==xand b(z)==x.

Examples

Simple intersect example:

intersect([1,5,2;6,2,6],[9;0;1;2])

R = [ 1 ; 2 ]

Simple intersect example with multiple returns:

[a,b,c]=intersect([1,5,2;6,2,6],[9;0;1;2])

a = [ 1 ; 2 ]
b = [ 1 ; 5 ]
c = [ 3 ; 4 ]

Simple intersect example with rows option:

intersect([1,5,2;6,2,6],[9,0,1;6,2,6],'rows')

ans = [Matrix] 1 x 3
6  2  6