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Re: st: Panel with minimum observations


From   Christian Bustamante <cdeb77@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Panel with minimum observations
Date   Sun, 15 Mar 2009 14:56:15 -0500

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?
>
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>



-- 
CdeB

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