Date:         Thu, 10 Dec 2009 15:28:16 -0500
Reply-To:     "Fehd, Ronald J. (CDC/CCHIS/NCPHI)" <rjf2@CDC.GOV>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         "Fehd, Ronald J. (CDC/CCHIS/NCPHI)" <rjf2@CDC.GOV>
Subject:      Re: how to count the number of elements in a macro variable?
In-Reply-To:  <40918322-ab63-431f-8ce4-a30582090366@u25g2000prh.googlegroups.com>
Content-Type: text/plain; charset=us-ascii

see the Nitems macro:

http://www.sascommunity.org/mwiki/images/7/77/Nitems.sas

summary use functions compress and countc

Ron Fehd  the macro maven  CDC Atlanta GA USA RJF2 at cdc dot gov

> From: Takatsugu
> Sent: Thursday, December 10, 2009 2:32 PM
> Subject: how to count the number of elements in a macro variable?
>
> Hi,
>
> I am a newbie to SAS and use SAS at work while I have experience in
> using R for a while.
>
> I would like to know how to automatically determine the length of
> &vars (=5) instead of declaring 10 in the below script....
>
> %let vars = A B C D E;
>
> data _NULL_;
>    do i = 1 to 10;  <---- this value of 10 is what I would like to
> automate when I change &vars.
>       letter = scan(&vars., i, ' ');
>       put i letter;
>       if letter = " " then leave;
>    end;
> run;
>
> Any help is appreciated!!!
>
> Thanks.
>
> Taka
>
> how can I automatically count the number of itesm in this macro
> variable?
>
>