Date:         Wed, 14 Feb 2001 11:54:46 -0700
Reply-To:     "Garnett P. McMillan" <gnet@UNM.EDU>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         "Garnett P. McMillan" <gnet@UNM.EDU>
Organization: University of New Mexico, Albuquerque
Subject:      Combinations of elements from a string
Content-Type: text/plain; charset=us-ascii

Greetings all!!

Suppose I define a macro variable:

%LET  X = x1 x2 x3 z1;

How can I generate a set of macro variables, each of which describes a
particular combination of the elements from X?

For example,
VAR1 = x1,
VAR2 = x1 x3,
VAR3 = x1 z1,
VAR4 = x2 x3,

and so on until I have all possible combinations identified by
individual macro variables.

Is this possible?

Thanks very much in advance,
Garnett