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st: RE: storing values from within "by varname :" command


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: storing values from within "by varname :" command
Date   Sun, 22 Oct 2006 17:51:16 +0100

In addition to various other responses: -contract-
is the official Stata command designed to do this 
"ultimate" problem directly. 

Nick 
n.j.cox@durham.ac.uk 

Andrey V. Ivanov
 
> I have a dataset of individuals (and their characteristics) 
> that belong 
> to some groups and live in different regions.
> 
> I would like to be able to extract frequencies of individuals 
> by group 
> and region and store these frequencies in a different 
> dataset, ultimately.
> 
> so, I have the following code:
> 
> by region group : count (if...)
> 
> and now I want this to be stored in a special matrix that has 
> a vector 
> of group name, a vector of regions, and the vector of the 
> result of the 
> "count" command.
> 
> I know I can bypass all this if I collapse the dataset using 
> the "count" 
> option.
> 
> But, my question is more general: it is about storing the 
> output of some 
> command inside the "by varname :" construct.

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