> On 01 Apr 2017, at 01:54 , Sarah Goslee <sarah.gos...@gmail.com> wrote: > > The short answer is that hold isn't a list-like object, and $ only > works with list-like objects (lists and data frames, mainly). > > You can get the full explanation (VERY full), at > ?Extract > or any of its aliases, like > ?'$' > or > ?'[' >
...and the intermediate answer is: hold["Mean"] -pd > Sarah > > On Fri, Mar 31, 2017 at 7:11 PM, Evan Cooch <evan.co...@gmail.com> wrote: >> Continuing my learning curve after 25_ years with using SAS. Want to pull >> the "Mean" forom the summary of something... >> >> test <- rnorm(1000,1.5,1.25) >> >> hold <- summary(test) >> >> names(hold) >> [1] "Min." "1st Qu." "Median" "Mean" "3rd Qu." "Max." >> >> OK, so "Mean" is in there. >> So, is there a short form answer for why hold$Mean throws an error, and >> hold["Mean"} returns the mean (as desired)? >> >> Silly question I know, but gotta start somewhere... >> >> Thanks... >> > > -- > Sarah Goslee > http://www.functionaldiversity.org > > ______________________________________________ > 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. -- Peter Dalgaard, Professor, Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000 Frederiksberg, Denmark Phone: (+45)38153501 Office: A 4.23 Email: pd....@cbs.dk Priv: pda...@gmail.com ______________________________________________ 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.
