x[“V2”] would retain columns of x headed by V2. What I need is the opposite——I need a data grime with those columns excluded.
Steven from iPhone > On Feb 13, 2023, at 9:33 AM, Rolf Turner <r.tur...@auckland.ac.nz> wrote: > > >> On Sun, 12 Feb 2023 14:57:36 -0800 >> Jeff Newmiller <jdnew...@dcn.davis.ca.us> wrote: >> >> x["V2"] >> >> is more efficient than using drop=FALSE, and perfectly normal syntax >> (data frames are lists of columns). > > <SNIP> > > I never cease to be amazed by the sagacity and perspicacity of the > designers of R. I would have worried that x["V2"] would turn out to be > a *list* (of length 1), but no, it retains the data.frame class, which > is clearly the Right Thing To Do. > > cheers, > > Rolf > > -- > Honorary Research Fellow > Department of Statistics > University of Auckland > Stats. Dep't. phone: +64-9-373-7599 ext. 89622 > Home phone: +64-9-480-4619 > [[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.