Date:         Thu, 11 Apr 2002 09:32:48 -0400
Reply-To:     Larry Bertolini <bertolini.1@OSU.EDU>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Larry Bertolini <bertolini.1@OSU.EDU>
Organization: Ohio State University
Subject:      Re: Does it exist??
Content-Type: text/plain; charset=us-ascii

Haven't tested this, but...
perhaps you could use two SET statements;
one would read sequentially, keeping track
of the current obs.  The other would use POINT=,
and get the desired OBS (forward or backward)
as needed.

fabio wrote:

> does it exist the inverse function of the lag function?? I mean a
> function that returns the future value of a variable (not the lagged).
> I need it in a proc model.
> thanks a lot
>
> esiste la funzione inversa della funzione lag? ossia una funzione che
> restituisca, nell ambito di una proc model, il valore futuro di una
> variabile...grazie mille