Sorry, please nevermind. It seems to have been an econometrical problem after all.
(A variable consisting of 2 or more of the 150 Country-Dummies for the fixed effects causes perfect multicollinearity as well. So does a variable that differs over cross-sections but not over periods, seemingly. I was not aware before...) -- View this message in context: http://r.789695.n4.nabble.com/2-not-defined-because-of-singularities-appearing-after-introducing-Fixed-Effects-tp2327047p2328686.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
