in the name of God
hi dear I use benchmark package to use of dea and when I wanna save my result as csv by this as below write.csv(farzana,'D:sajjaad.csv') I can not and the error is as below Error in as.data.frame.default(x[[i]], optional = TRUE, stringsAsFactors = stringsAsFactors) : cannot coerce class ""Farrell"" to a data.frame what should I do ? best regards farzana [[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.