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 ______________________________________________ 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.
