Re: AW: AW: st: AW: mfxrcspline : error message in Stata11

[SCHOUMAKER Bruno <bruno.schoumaker@uclouvain.be>]

***
_rmcoll `varlist', forcedrop
local xvars `r(varlist)'
poisson _d `xvars'
mfxrcspline, link(log) level(80) generate(marg margl margu)
***

Le 15/07/2010 14:59, SCHOUMAKER Bruno a écrit :
> Thanks !
>
> _rmcoll removes collinear variables if the option forcedrop is used 
> (otherwise they are flagged o.varname).
> It now works with the following syntax
>
> ***
> _rmcoll `varlist'==1, forcedrop
> local xvars `r(varlist)'
> poisson _d `xvars'
> mfxrcspline, link(log) level(80) generate(marg margl margu)
> ***
>
> Bruno
>
>
> Le 15/07/2010 13:41, Martin Weiss a écrit :
> > <>
> >
> >
> > " So I guess I need to find a way of dropping the collinear variables
> > variables before running the models (or use Stata10)."
> >
> >
> >
> > Try
> >
> > *************
> > help _rmcoll
> > *************
> >
> >
> > Re your attempts to -version- your way out of the problem, see NJC`s 
> > recent comment at 
> > http://www.stata.com/statalist/archive/2010-07/msg00180.html
> >
> >
> >
> > HTH
> > Martin
> >
> >
> > -----Ursprüngliche Nachricht-----
> > Von: owner-statalist@hsphsun2.harvard.edu 
> > [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von 
> > SCHOUMAKER Bruno
> > Gesendet: Donnerstag, 15. Juli 2010 13:02
> > An: statalist@hsphsun2.harvard.edu
> > Betreff: Re: AW: st: AW: mfxrcspline : error message in Stata11
> >
> > Thank you for your replies !
> >
> > Below is a copy of the part around the error. I noticed that dumy102 and
> > bin103 had been transformed into o.dumy102 and o.bin103.
> >
> > In the previous version, these variables were dropped automatically from
> > the regression model when there was collinearity, but it is no longer
> > the case in stata11 .
> >
> > "As of Stata 11, variables are no longer dropped because of
> > collinearity. Instead, these variables are omitted and are labeled with
> > the “o.” operator in the column names of the resulting parameter
> > vector.", (http://www.stata.com/support/faqs/lang/post.html).
> >
> > This is the cause of the problem. When I drop the collinear variables
> > before running the model, it works (adding "version 10.1:" before the
> > regression model and/or mfxrcspline does not solve the problem)
> >
> > So I guess I need to find a way of dropping the collinear variables
> > variables before running the models (or use Stata10).
> >
> > Best,
> >
> > Bruno
> >
> >
> >
> >
> > ***********
> >       - local other : list other - notis
> >       - if "`other'" != "" {
> >       = if "_Iageg_5 _Iageg_6 _Iageg_7 _Iageg_8 _Iageg_9 _Iageg_10 rcsp1
> > rcsp2 rcsp3 rcsp4 rcsp5 dumy82 dumy8
> > >  7 dumy94 o.dumy102 bin82 bin87 bin94 bin102 bin83 bin88 bin95
> > o.bin103" != "" {
> >       - foreach var of varlist `other' {
> >       = foreach var of varlist _Iageg_5 _Iageg_6 _Iageg_7 _Iageg_8
> > _Iageg_9 _Iageg_10 rcsp1 rcsp2 rcsp3 rcsp4
> > >   rcsp5 dumy82 dumy87 dumy94 o.dumy102 bin82 bin87 bin94 bin102 bin83
> > bin88 bin95 o.bin103 {
> > o. operator not allowed
> >         sum `var' if `touse', meanonly
> >         qui drop `var'
> >         qui gen double `var' = r(mean)
> >         }
> >         }
> > ***********
> >
> > Le 15/07/2010 11:36, Martin Weiss a écrit :
> > > <>
> > >
> > >
> > > And yet, strangely, Bruno does not seem to have used the "factor 
> > > variable notation" in any way in his call to -ssc d mfxrcspline-. I 
> > > tried to recreate his problem, but all efforts failed. The 
> > > "click-to-run" examples in the help file do work as expected. So I 
> > > would ask Bruno to -set tr on- and report the area around the error...
> > >
> > >
> > > HTH
> > > Martin
> > >
> > >
> > > -----Ursprüngliche Nachricht-----
> > > Von: owner-statalist@hsphsun2.harvard.edu 
> > > [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Maarten 
> > > buis
> > > Gesendet: Donnerstag, 15. Juli 2010 11:31
> > > An: statalist@hsphsun2.harvard.edu
> > > Betreff: Re: st: AW: mfxrcspline : error message in Stata11
> > >
> > > --- SCHOUMAKER Bruno wrote:
> > >
> > > > I used mfxrcspline with Stata10. I recently upgraded to
> > > > Stata11, ran on Stata11 the do file that worked (and
> > > > still works) with Stata10, and I
> > > > got the following error message
> > > >
> > > > . mfxrcspline, link(log) level(80) generate(marg margl
> > > > margu)
> > > > o. operator not allowed
> > > > r(101);
> > > > r(101);
> > > >
> > > > Do you know what this message means and how to solve it ?
> > > --- On Thu, 15/7/10, Martin Weiss wrote:
> > >
> > > > The -program- sets -version- to 10. So the new features
> > > > under 11, in particular -fvvarlist-s, are not yet
> > > > implemented.
> > > Martin maybe on to something. None of my programs allow the new
> > > factor variable notation. This is not because I think that it is
> > > a bad idea, but just because I haven't found the time to find
> > > out how to implement it. I have tried out some examples with and
> > > without the new factor variable notation, and indeed everything
> > > works as expected as long as you don't use the factor variable
> > > notation but errors are returned as soon as the factor varaibles
> > > are used.
> > >
> > > Thanks for the report,
> > > Maarten
> > >
> > > --------------------------
> > > Maarten L. Buis
> > > Institut fuer Soziologie
> > > Universitaet Tuebingen
> > > Wilhelmstrasse 36
> > > 72074 Tuebingen
> > > Germany
> > >
> > > http://www.maartenbuis.nl
> > > --------------------------
> > >
> > >
> > >
> > >
> > >
> > > *
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> > >
> > >
> > > *
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> > > *   http://www.ats.ucla.edu/stat/stata/

--
Bruno SCHOUMAKER

Centre de recherche en démographie et sociétés
Université catholique de Louvain
1-17 PLace Montesquieu
1348 Louvain-la-Neuve
BELGIUM

Tel. +32 10 474136
Fax. +32 10 472952

bruno.schoumaker@uclouvain.be
www.uclouvain.be/demo

*
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