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st: RE: XT LAGS


From   "Nick Cox" <[email protected]>
To   <[email protected]>
Subject   st: RE: XT LAGS
Date   Mon, 20 Jun 2005 12:24:36 +0100

. help tsset 

and look at linked sections in the help and the 
manual. 

You won't be able to do anything useful with 
xt data until you learn this material. 

Nick 
[email protected] 

[email protected]
 
> Does anyone know how can I create lags when I am using a long 
> format xt
> dataset eg:
> Id year var1 var2 ......
> 12 1
> 12 2
> 12 3
> 12 4
> 13 1
> 13 2
> 13 3
> 13 4
> If I use the command generate xlag= x[_n-1] then this will 
> only create one
> missing value at the first observation for the individual 
> with the personal
> identification mumber 12 and none for the rest- hence -this mixes up
> different individuals' observations.

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