FULLJOIN

Name

fulljoin

Purpose

Create the full join, or Cartesian product of two sets.

Description

a and b are two vectors of identical type.
a matrix c is returned where c[0,*] is values of a in order
c[1,*] is values of b in order

Calling Sequence

fulljoin( a,b)

Inputs

a - 1-D array
b - 1-D array

Optional Input Parameters

Keyword Input Parameters

NOUNIQ - Flag, if set, does a straight join across a and b as is.
Otherwise the a and b arrays are sorted into uniq values.
PRESERVE- Flag, if set, and NOUNIQ not set, unique values for a and b
will be used but they will be in their original order, ie,
for each unique value, the order of its first appearance.

Outputs

Returns a product matrix of dimension 2 X (m * n).
of the form [ [a0,b0], [a0, b1], [a0,b2]... [a1,b0],... [an,bn-1], [an.bn]]

Keyword Output Parameters

Common Blocks

Side Effects

Restrictions

Procedure

Modification History

2006/08/16, Written by Peter L. Collins, Lowell Observatory