Laura Smith wrote: > > What do the nfnGroupdata, nfGroupdata mean, please? > >
??nfnGroupedData (not nfnGroupdata) gives some information, and tells you, that it is related to package nlme. This package is one of the most useful and has a good documenting book (Pinheiro/Bates), but the groupedData concept is more confusing than helpful. I only started to understand lme and friend until I had noted that it works without grouped data. So better consider CO2 a simple data frame of example data, with historical decoration. I suggest you start with CO2 <- as.data.frame(CO2) Dieter -- View this message in context: http://r.789695.n4.nabble.com/newbie-question-on-str-output-tp3092078p3092237.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.