Hi Peter Ehlers <ehl...@ucalgary.ca> napsal dne 09.06.2010 19:05:24:
> Soapbox: > Well, if you're just starting out with R it would be > a VERY good idea to learn right away that T is not TRUE > and F is not FALSE, at least not always. Sooner or > later you WILL have problems. So do yourself a favour > and get into the habit of using TRUE/FALSE instead of T/F. > > (I know that Petr knows better.) Yes good point. However when I work interactively with command prompt I often (well almost exclusively :-) use T/F instead of TRUE/FALSE as I am lazy to type. It is necessary to keep habit not to use T/F/c/matrix/vector/... as names for objects. So T can be used as abbreviation for TRUE like mean(x, na.rm=T) as long as you do not define T <- "Title" mean(x, na.rm=T) Error in if (na.rm) x <- x[!is.na(x)] : argument is not interpretable as logical at least until T/F is removed from such use by R developers You can even try ?"T" and you can read help page for that. Regards Petr > > -Peter Ehlers > > On 2010-06-09 9:08, Larissa Lucena wrote: > > Thanks so much!!! I'm using R for the first time, and so, I have many stupid > > doubts! Sorry and thanks again! > > > > Regards! > > > > 2010/6/9 Petr PIKAL<petr.pi...@precheza.cz> > > > >> Hi > >> > >> where did you find parameter add=T. > >> > >> You can use > >> > >> par(new=T) > >> before using new plot command > >> > >> or use > >> > >> points, lines > >> > >> Regards > >> Petr > >> ______________________________________________ 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.
