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st: RE: on restructuring of panel datasets


From   Nick Cox <n.j.cox@durham.ac.uk>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   st: RE: on restructuring of panel datasets
Date   Thu, 27 Jan 2011 19:53:34 +0000

As far as Stata is concerned this is already a panel dataset. It is difficult to see why you want this restructure, which would break that. 

But what you ask for is possible through -reshape long-. 

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

rado645-bg@yahoo.de
 
I would like to ask for help with the reorganizing of a panel dataset. I 
have a panel data set with the following structure: 

 
Firm        date      VAR1      VAR2     VAR3 (other vars follow)
1              1              0              1      2   
1              2              1              2      3 
1              3              2              3      1
2              1             .                .       .
2              2             .                .       .
2              3             .                .       .              
3              1
3              2
3              3
 
 
VAR1      VAR2     VAR3 actually are sub-elements of a general variable VAR.

I would like to create the following series where these variables are combined 
in 

a single variable VAR for all firms:
On the example of firm 1, I would like to get:

Firm        date      VAR  
1              1              0               
1              1              1               
1              1              2               
1              2              1               
1              2              2               
1              2              3               
1              3              2              
1              3              3              
1              3              1              
and so on. 

I also have other variables in the dataset but I guess they will be reordered 
automatically with respect to this order.

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