%MACRO nobs(sasset);  %*--macro returns the number of observations in the SAS data set;
%LOCAL dsid rc numobs;
%LET numobs=%STR(.);
%LET dsid=%SYSFUNC(OPEN(&sasset));
%LET numobs=%SYSFUNC(ATTRN(&dsid,NOBS));
%LET rc=%SYSFUNC(CLOSE(&dsid));
%STR(&numobs)
%MEND nobs;