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Re: st: `x' notation


From   "Svend Juul" <SJ@SOCI.AU.DK>
To   <statalist@hsphsun2.harvard.edu>
Subject   Re: st: `x' notation
Date   Mon, 24 Oct 2005 23:19:42 +0200

Terra wrote:

I have a forvalues loop I'm trying to run:
forvalues x=1989(1)2005 {
  forvalues y=1(1)12 {
   if `x'==2005 & `y'>8 continue
   gen
mktgprof`y'`x'=(det`y'`x')/(det`launchdatemo'`launchdateyr')
   }
}
And when I run that I get the following error:
det ambiguous abbreviation
r(111);
end of do-file
r(111);
After some experimenting I know that the problem lies in
the(det`launchdatemo'`launchdateyr') part.  I need the denominator to refer
to, for example, the variable det11989 if launchdate (one of my variables)
for that observation is equal 1/1/1989.  I have created two variables,
launchdatemo and launchdateyr which are the launch date month and year,
respectively. That's what I'm trying to refer to in the denominator above....
--------------------------------------

It looks as if you try to handle launchdatemo and launchdateyr as macros,
but according to your description they are variables. Try a debug.
Before running your commands:
   . set trace on
   . set tracedepth 1
and see what happens. This lets check whether your macros expanded to what
you expected. In this case `launchdatemo' and `launchdateyr' probably
expanded to nothing, hence the error message on det being an ambiguous
abbreviation.


Hope this helps
Svend

________________________________________________________

Svend Juul
Institut for Folkesundhed, Afdeling for Epidemiologi
(Institute of Public Health, Department of Epidemiology)
Vennelyst Boulevard 6
DK-8000 Aarhus C,  Denmark
Phone, work:  +45 8942 6090
Phone, home:  +45 8693 7796
Fax:          +45 8613 1580
E-mail:       sj@soci.au.dk
_________________________________________________________

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