This is not correct. There is no rule that a time variable _must_ be specified.
On Thu, Nov 8, 2012 at 10:11 AM, Justina Fischer <JAVFischer@gmx.de> wrote:
> Hi Andrew
>
> when using xtset you have to specify both observational unit and time dimension at the same time.
>
> E.g. xtset country year
>
> or xtset id timeline
>
>
> etc.
>
>
> Best
>
> Justina
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/faqs/resources/statalist-faq/
* http://www.ats.ucla.edu/stat/stata/
