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Re: st: Panel with minimum observations


From   "Martin Weiss" <Martin.Weiss1@gmx.de>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Panel with minimum observations
Date   Sun, 15 Mar 2009 21:02:18 +0100

<>

You should start a new thread for this new subject, although the distinction between new and related subject may mean different things to different people...

I have observed severe declines over a couple of months in the ability to -set mem- over time as well. Does this have to do with fragmentation of the dsk?

HTH
Martin
-------- Original-Nachricht --------
> Datum: Sun, 15 Mar 2009 14:56:15 -0500
> Von: Christian Bustamante <cdeb77@gmail.com>
> An: statalist@hsphsun2.harvard.edu
> Betreff: Re: st: Panel with minimum observations

> Thanks for your answers Joseph and Nick.
> I have another problem. When I tried to run -xtgls- Stata saids:
> 
> insufficient memory for temporary matrix
>     You need to increase the size of memory; see help memory.
> r(950);
> 
> In a previous ocassion I ran the same command in the same laptop, I
> don't kwon what happens. Also, after I could assign more than 1gb to
> memory (I have 3gb of RAM), but now I can only assing 500mb.... what's
> going on?
> 
> 
> On Sun, Mar 15, 2009 at 11:37 AM, Nick Cox <n.j.cox@durham.ac.uk> wrote:
> > -egen- is a slip here for -gen-. But you could do this without any new
> variables at all.
> >
> > bysort myid : drop if _N <= 2
> >
> > That said, I support Joseph's last paragraph strongly.
> >
> > Nick
> > n.j.cox@durham.ac.uk
> >
> > Joseph McDonnell
> >
> > . sort myid
> > . by myid: egen myN=_N
> > . drop if myN<=2
> >
> > Of course, dropping is quite a severe step. You might prefer to use
> > one of the 'mark' commands or just use the 'if' qualifier.
> >
> > Christian Bustamante
> >
> >> I runing a panel data model with a large dataset. The panel is
> >> unnbalanced, so there is individuals with one or two observations. I
> >> don't want to use this observations in my model, how can I set it?
> >
> > *
> > *   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/
> >
> 
> 
> 
> -- 
> CdeB
> 
> *
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> *   http://www.stata.com/help.cgi?search
> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/

-- 
Martin Weiss
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