st: lag for panel data

[Marcello Pagano <pagano@hsph.harvard.edu>]

For Kit:

Begin forwarded message:

> From: Kit Baum <baum@bc.edu>
> Date: August 12, 2005 8:01:46 AM EDT
> To: statalist@hsphsun2.harvard.edu
> Subject: lag for panel data
>
>
> webuse grunfeld
> tsset company year
> generate linvest = L.invest
> generate dkstock = D.kstock
>
> works whether you have balanced or unbalanced panels, or even  
> missing periods for all panels.
>
> Kit Baum, Boston College Economics
> http://ideas.repec.org/e/pba1.html
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