Either you have panel data and are not declaring
the panel identifier, or there is some other 
problem. (Or both.) 
Nick 
[email protected] 
Maarten Buis
 
> The warning messages seem pretty clear: You have multiple 
> observations occurring at the same time. If you have multiple 
> time series from different 
> individuals/countries/companies/critters than the family of 
> -xt- commands are your friend, see -help xt-.
Yoshiro Nagao
 
> I insheeted a new data file,
> and tried to "tsset" a variable:
> ********************************************
> . tsreport
> time variable not set, use -tsset varname ...-
> r(111);
> 
> . tsset sequential_month
> repeated time values in sample
> r(451);
> ********************************************
> 
> How can I declare that a variable
> represents "time"?
*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/