st: Re: assigning a name to the output of -count-

[Kit Baum <baum@bc.edu>]

In addition, you might want to look at my recent posting

http://www.hsph.harvard.edu/cgi-bin/lwgate/STATALIST/archives/ 
statalist.0412/date/article-797.html

which discussed how to make use of results of r(count).

Kit Baum, Boston College Economics
http://ideas.repec.org/e/pba1.html

On Jan 2, 2005, at 2:33 AM, statalist-digest wrote:


> > Dear Stata users,
> >
> > I would like to count the number of missing observations in a variable
> > -var1- of my dataset and perform cetain operations based on the count.
> > To do this I entered
> > count if var1 == .
> > and  I get a number, lets say 40: However, when I wanted to compare
> > the output of count (here 40) with another number such that:
> > if count <=50 {....
> >
> > I receive error message saying that stata could not find count. How
> > can I assign a name to the output of the count command?
> >
> > thanks a lot
> > Sarah
> If you do -return list- after the -count- command, you'll see that the
> value computed by -count- is stored in r(N).  So, do something like
>
> count if missing(var1)
> if r(N) <= 50 {...
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