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st: RE: time and date series


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: time and date series
Date   Tue, 19 Oct 2004 15:43:56 +0100

In Stata, and indeed elsewhere, you can't 
have it both ways. The definition of a panel 
implies (a) identifiable individuals and (b) 
at most one observation for each time unit
and individual. Other data structures cannot 
be mapped into that without sacrificing something. 

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

Lars Korsholm
 
> I'm posting a question for a friend.
> 
> he has a dataset with data and time variable
> and he would like to use the nice features of tsset
> or something like that.
> each individual is just seen once
> but several individuals are seen each day.
> 
> I vague remeber this issue been discussed before on this list. 
> Any hint?
> 
> Best Lars
> 
> PS just using the date varibale in tsset yields:
> 
> "repeated time values in sample r(451);"

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