Date:         Wed, 5 Nov 1997 16:55:42 CST
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              <owner-LISTSERV@UGA.CC.UGA.EDU>
Sender:       "SAS(r) Discussion" <SAS-L@UGA.CC.UGA.EDU>
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From:         Undetermined origin c/o LISTSERV administrator
              <owner-LISTSERV@UGA.CC.UGA.EDU>
Subject:      Re[2]: macro variable
Comments: To: pprimak@genzyme.com

Philip Primak <pprimak@GENZYME.COM> wrote:
 
>Use the following code (if you have SAS 6.12+ or 6.09E+):
>%let dsid=%sysfunc(open(yourdata));
>%let numobs=%sysfunc(attrn(&dsid,nobs));
>%let rc=%sysfunc(close(&dsid));
>
>Then macro variable numobs will be equal to number of observations in
>your data set.
 
I haven't tested this, but you might want to use the NLOBS (logical
observations) attribute instead of the NOBS attribute, in case there
are deleted observations in the dataset.
 
Also, while you're using the data set functions anyway, you might
as well check the value of the ANOBS attribute to see whether the
engine knows the correct number of observations.
 
Have these functions been documented anywhere other than the
draft Macro Facility Enhancements paper?