Date:         Mon, 15 Sep 2008 18:17:53 -0400
Reply-To:     "P. Cristian Gugiu" <crisgugiu@YAHOO.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         "P. Cristian Gugiu" <crisgugiu@YAHOO.COM>
Subject:      Count number of unique values in a column vector in IML

Hi all. I have a variable that represents the group an individual belogs
to. I would like to calculate the number of group levels by counting the
number of unique values for a variable in IML. For example,

Variable X
0
0
0
1
1
2
2
2

So, variable X has 3 group levels (0, 1, 2). Anyone know how to define a
variable that is equal to the number of unique values in X?

thanks,
Cristian