Hi, I am trying to estimate a two-way model with both individual and time fixed effects. I am using plm with "twoways" specification.
plm(as.integer(yvar) ~ xvar, index = c("id", "time"), model="within", data=dataset, effect = "twoways") But I get keep getting the following message and I don't know what to do about it, because I don't think anything is wrong with my indices (but please correct me if I'm wrong on this!). : Error in plm.fit(formula, data, model, effect, random.method, random.models, : empty model Here's the data: https://drive.google.com/file/d/1p-LrZ3GdVhsat6xFCJ5FmmhUL9SvFAG5/view?usp=sharing Thank you so much in advance for your help. [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.