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| From | Ivan Png <iplpng@gmail.com> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | Re: st: xtpoisson -- error |
| Date | Tue, 15 Nov 2011 07:56:50 +0800 |
Many thanks, Rrof Williams. I updated and it now works :) Thanks also for the tip on factor variables. On Tue, Nov 15, 2011 at 7:24 AM, Richard Williams <richardwilliams.ndu@gmail.com> wrote: > At 06:01 PM 11/14/2011, Ivan Png wrote: >> >> Dear STATAlist: >> >> I'm running xtpoisson and keep encountering an error message >> "factor variables and time-series operators not allowed in option xvars()" >> >> My code: >> >> . global explvar bkval_ln mktval_ln revt_ln at_ln >> . global fixedeff i.sic i.year >> >> . set matsize 1000 >> . xtset gvkey year >> >> . xi: xtpoisson move cnc_alt $explvar $fixedeff , fe i(gvkey) vce(robust) >> >> I'm using STATA-11. It runs through about 12 iterations then stops, >> giving me the error message, >> ""factor variables and time-series operators not allowed in option >> xvars()". >> >> I would appreciate your help. > > According to the Stata 11 update 01jul2010, "xtpoisson with options fe and > vce(robust) failed when factor variables were used. This has been fixed." > So, my guess is you don't have the most current version of Stata. On my > computer, > > . update query > (contacting http://www.stata.com) > > Stata executable > folder: C:\Program Files (x86)\Stata11\ > name of file: StataSE-64.exe > currently installed: 01 Sep 2011 > latest available: 01 Sep 2011 > > Ado-file updates > folder: C:\Program Files (x86)\Stata11\ado\updates\ > names of files: (various) > currently installed: 01 Sep 2011 > latest available: 01 Sep 2011 > > Utilities updates > folder: C:\Program Files (x86)\Stata11\utilities > names of files: (various) > currently installed: 01 Sep 2011 > latest available: 01 Sep 2011 > > Recommendation > Do nothing; all files up to date. > > > > ------------------------------------------- > Richard Williams, Notre Dame Dept of Sociology > OFFICE: (574)631-6668, (574)631-6463 > HOME: (574)289-5227 > EMAIL: Richard.A.Williams.5@ND.Edu > WWW: http://www.nd.edu/~rwilliam > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > -- Best wishes Ivan Png Skype: ipng00 T: +1 603 646 8995 * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/