I tried it several times. it still gives me the same error. I also used traceback()
here is what I got: > traceback() 3: `[.data.frame`(df, -s1$SubID, ) 2: df[-s1$SubID, ] 1: crossed1(agr) But I don't think there is anything wrong with it...... -- View this message in context: http://r.789695.n4.nabble.com/error-message-tp3223412p3224006.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.
