st: Help using xi: with xtreg

[Rodney Andrews <rodney.j.andrews@gmail.com>]

I'm having problems using the expansion interaction with xtreg. I am
attempting to include cross-sectional specific trend terms in my
regression. Each time I get a r(101) time series operators not allowed
error message.

Here is my specification:

xi: xtreg  y x1 x2   i.post*x1 i.crossectionid.trend,xtreg




-- 
Rodney J. Andrews

*
*   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/