Date:         Sun, 27 Sep 1998 14:07:50 +0100
Reply-To:     af <armel.francois@WANADOO.FR>
Sender:       "SAS(r) Discussion" <SAS-L@UGA.CC.UGA.EDU>
From:         af <armel.francois@WANADOO.FR>
Organization: Wanadoo - (Client of French Internet Provider)
Subject:      Re: enumerating data - urgent!

Try something  like  ( with your table sorted by X.)
:
 
Data newfile;
   Set Yourfile;
   By X;
 
Retain ctr 0 ;
 
If first.X then ctr = 0;
 
ctr + 1;
Output newfile;
 
 
RUN ;