Re: st: error message r(2000)

[Ron�n Conroy <rconroy@rcsi.ie>]

louis boakye-yiadom wrote:

> Dear All,
> I get a "no observations" error message -r(2000)- when I execute a do 
> file,
> and I'm having difficulty determining what's going wrong. According to 
> the
> error message, I "have requested some statistical calculation and 
> there are
> no observations on which to perform it. Perhaps you specified if exp 
> or in
> range and inadvertently filtered all the data." I don't understand 
> what is
> meant by "filtered all the data". The line that generates the error 
> message
> is:
> regress lnW `varlist' if migst1==0
> To check whether there are actually no observations, I gave the following
> command (and had the shown output):
> count if migst1==0 & !mi(`varlist')
> 2720
Is there a non-numeric variable in there perhaps?

--

Ronan M Conroy (rconroy@rcsi.ie) 
Senior Lecturer in Biostatistics 
Royal College of Surgeons 
Dublin 2, Ireland 
+353 1 402 2431 (fax 2764) 
-------------------- 
Just say no to drug reps 
http://www.nofreelunch.org/

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