Hello Ali,
Year and Company should uniquely identify your observations. So do you
really need Country as identifier in your analysis? If not take
Company as "id"-variable and Year as "time"-dimension.
Best regards
Christian
Zitat von "Shahzad, Muhammad" <[email protected]>:
Hello,
My data has the following "shape":
Country Year Company Industry Variables
Country1 2000 CompanyA IndX V1 V2 VN
Country1 2000 CompanyB IndY V1 V2 VN
Country1 2001 CompanyA IndX V1 V2 VN
...
Country1 2006 CompanyD IndZ V1 V2 VN
.
Country2 2000 CompanyB IndY V1 V2 VN
..
Country2 2006 CompanyJ IndX V1 V2 VN
...
CountryN 2006 CompanyN IndN V1 V2 VN
When I try to define it as a panel using country and year as the
panel and time variables respectively, I get the error message "
repeated time values in sample". Obviously the combination of
country and year is not uniquely defining each observation. What
should I do in this case to define this data as a panel in order to
utilize the --xt-- family of commands?
Your help and suggestions are appreciated.
Regards
Ali Shahzad
[email protected]
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--
___________________________________________________________
Christian Böber
International Research Training Group
"Sustainable Resource Use in North China" (769)
Department of Agricultural Economics and Social Sciences in
the Tropics and Subtropics (490A)
University of Hohenheim
D-70593 Stuttgart/ Germany
Phone: ++49 (0) 711-459-23475
Email: [email protected]
___________________________________________________________
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