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RE: st: RE: RE: tabstat: how to save...


From   "b. water" <barleywater@hotmail.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: RE: RE: tabstat: how to save...
Date   Wed, 10 May 2006 12:41:38 +0000

The reason I said what I said is when I did:

. do "C:\DOCUME~1\waterb\LOCALS~1\Temp\STD02000000.tmp"

. local incidnsum

. sum incidn, meanonly

. scalar `incidnsum' =  r(sum)
= invalid name
r(198);

end of do-file
r(198);

. help scalar

revealled some example on how to use scalar, where none was put in Stata quotes  ` '. This led me to surmise that it is probably version issue of scalar syntaxes. But on closer look I realised that perhaps you are referring to may lax ( due to ignorance) use of -local- rather -tempname- in my -do- file, and consequently having to use -scalar- without `'. Is this what you meant by your warning? Although I think your warning refers to [P] Macro, I would appreciate if you can direct me to the pertinent reference in the manuals if this is assumption was not correct. Nevertheless, I have used your exact example using -tempname- and -scalar `foosum'-. 

Regards,
bw

----------------------------------------
> Subject: RE: st: RE: RE: tabstat: how to save...
> Date: Wed, 10 May 2006 12:47:13 +0100
> From: n.j.cox@durham.ac.uk
> To: statalist@hsphsun2.harvard.edu
> 
> No, on this detail you are wrong and version
> is not an issue. 
> 
> So long as you follow my example and issue 
> 
> tempname foosum
> 
> then after 
> 
> su foo, meanonly 
> 
> scalar `foosum' = r(sum) 
> 
> is as valid as can be. 
> 
> You are correct that you can do what
> looks the same thing by 
> 
> sum foo, meanonly 
> scalar foosum = r(sum) 
> 
> but to do that is to live more dangerously. 
> If you do this, sooner or later you will
> get burned, or bitten, by use of the same name in 
> different programs or use of identical
> or similar names for scalars and variables.
> 
> The problem is aired in the manuals and 
> rehearsed once more in a Tip by G. Kolev
> in Stata Journal 6(2), to appear next
> month. 
> 
> Nick 
> n.j.cox@durham.ac.uk 
> 
> b. water
>  
> > Thank you Nick for your alternative suggestion. 
> > 
> > In Stata 8.2, scalar `foosum' = r(sum) is an invalid syntax 
> > but checking on-line help showed valid syntax as scalar 
> > foosum = r(sum). This suggestion worked for my purpose and as 
> > you alluded, shorter than tabstat.

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