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Re: st: RE: How to merge individual records to groups in a large dataset, w/o using collapse


From   Allon Crazy <allon_crazy@yahoo.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: How to merge individual records to groups in a large dataset, w/o using collapse
Date   Mon, 26 Feb 2007 16:04:15 -0800 (PST)

Thanks, Nick,

It seems Merge is only to combine datasets with a
shared variable, while what I want is actually
aggregatre individual reacords into groups. 

--- Nick Cox <n.j.cox@durham.ac.uk> wrote:

> Dear Crazy, or dear Allon: 
> 
> On the face of it, a merge problem calls for the
> -merge-
> command. 
> 
> Nick 
> n.j.cox@durham.ac.uk 
> 
> Allon Crazy
>  
> > I am wondering how to merge individual records to
> > groups for an extremely large dataset (20 million
> > observations), without using collapse. I tred
> > collapse, but my computer would not offer enough
> > memeory for it because the dataset is too huge. I
> > tried egen, but egen does not take sampling
> weights
> > into consideration. I am wondering whether there
> is
> > another way or other options. 
>  
> 
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