Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: st: string variable
From
"Fabian Schönenberger" <[email protected]>
To
[email protected]
Subject
Re: st: string variable
Date
Fri, 03 Aug 2012 10:36:21 +0200
Many thanks Nick.
-encode- worked fine.
Fabian
-------- Original-Nachricht --------
> Datum: Fri, 3 Aug 2012 08:41:12 +0100
> Von: Nick Cox <[email protected]>
> An: "[email protected]" <[email protected]>
> Betreff: Re: st: string variable
> My guess is that -wtmean()- is written for some version of Stata --
> say around Stata 5 -- sufficiently old that by an old misfeature it
> behaves as if the quotation marks were stripped on parsing. I wrote an
> FAQ on this about 10 or 12 years ago, but can't find it using only a
> phone.
>
> Your solutions include
>
> to rewrite -wtmean()-
>
> to -encode- your string variable and work with the corresponding
> numeric variable (this is probably closest to what else you are doing)
>
> to write a loop using -summarize- and -replace-
>
> to use -statsby-.
>
> Nick
>
> On 3 Aug 2012, at 06:14, "Fabian Schönenberger" <[email protected]> wrote:
>
> > Dear Statalist
> >
> > I try the following commands:
> >
> > . levelsof SIZEBM,local(levels)
> > `"BH"' `"BL"' `"BM"' `"SH"' `"SL"' `"SM"'
> >
> > foreach l of local levels {
> > egen meanwreturn_`l'=wtmean(trt1m) if SIZEBM=="`l'",weight(size) by
> > (datemt)
> > }
> > BH not found
> > r(111);
> >
> > wtmean is from SSC.
> >
> > SIZEBM is a string variable, generated with the command
> >
> > egen SIZEBM=concat(SIZE BM)
> >
> > It seems the problem is not the foreach, but the term -
> > SIZEBM=="`l'" -
> >
> > Any ideas the solve the problem highly appreciated.
> >
> >
>
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/