Rolf can tell us for sure but I thought the goal was to use v ? Maybe not ? Either way, I think Bert wins for shortest and Kimmo wins for longest. IMHO, elegance is in the eye of the beholder.
On Fri, Sep 27, 2024 at 4:35 AM Stephen Berman via R-help < r-help@r-project.org> wrote: > Yet another way (not as sexy as Deepayan's): > > as.vector(t(sapply(x, c))) > > Steve Berman > > On Fri, 27 Sep 2024 10:45:06 +0300 Eric Berger <ericjber...@gmail.com> > wrote: > > > v <- as.numeric(matrix(unlist(x),ncol=5,byrow=TRUE)) > > v > > [1] 7 2 6 13 5 9 1 14 15 4 8 12 10 11 3 > > > > On Fri, Sep 27, 2024 at 8:33 AM Deepayan Sarkar > > <deepayan.sar...@gmail.com> wrote: > >> > >> > unsplit(x, f) > >> [1] 7 2 6 13 5 9 1 14 15 4 8 12 10 11 3 > >> > >> Is more general (works if the subgroups are imbalanced), and hopefully > more > >> sexy as well :-) > >> > >> Best, > >> -Deepayan > >> > >> > >> On Fri, 27 Sept 2024 at 10:11, Bert Gunter <bgunter.4...@gmail.com> > wrote: > >> > >> > ... And, in fact, I just realized that > >> > > >> > c(do.call(rbind, x)) > >> > > >> > is even better. > >> > > >> > -- Bert > >> > > >> > > >> > On Thu, Sep 26, 2024 at 9:26 PM Bert Gunter <bgunter.4...@gmail.com> > >> > wrote: > >> > > >> > > Sorry, hit send by accident. > >> > > The 2-line version is: > >> > > > >> > > x <- do.call(rbind, x) > >> > > dim(x) <- NULL > >> > > > >> > > Cheers, > >> > > Bert > >> > > > >> > > On Thu, Sep 26, 2024 at 9:23 PM Bert Gunter <bgunter.4...@gmail.com > > > >> > > wrote: > >> > > > >> > >> How about: > >> > >> as.vector(do.call(rbind,x)) > >> > >> > >> > >> Cheers, > >> > >> Bert > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> However, I much prefer a 2 line version: > >> > >> > >> > >> On Thu, Sep 26, 2024 at 8:56 PM Rolf Turner <rolftur...@posteo.net > > > >> > >> wrote: > >> > >> > >> > >>> > >> > >>> I have (toy example): > >> > >>> > >> > >>> x <- list(`1` = c(7, 13, 1, 4, 10), > >> > >>> `2` = c(2, 5, 14, 8, 11), > >> > >>> `3` = c(6, 9, 15, 12, 3)) > >> > >>> and > >> > >>> > >> > >>> f <- factor(rep(1:3,5)) > >> > >>> > >> > >>> I want to create a vector v of length 15 such that the entries of > v, > >> > >>> corresponding to level l of f are the entries of x[[l]]. I.e. I > want > >> > >>> v to equal > >> > >>> > >> > >>> c(7, 2, 6, 13, 5, 9, 1, 14, 15, 4, 8, 12, 10, 11, 3) > >> > >>> > >> > >>> I can create v "easily enough", using say, a for-loop. It seems > to me, > >> > >>> though, that there should be sexier (single command) way of > achieving > >> > >>> the desired result. However I cannot devise one. > >> > >>> > >> > >>> Can anyone point me in the right direction? Thanks. > >> > >>> > >> > >>> cheers, > >> > >>> > >> > >>> Rolf Turner > >> > >>> > >> > >>> -- > >> > >>> Honorary Research Fellow > >> > >>> Department of Statistics > >> > >>> University of Auckland > >> > >>> Stats. Dep't. (secretaries) 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 > >> > >>> https://www.R-project.org/posting-guide.html > >> > >>> and provide commented, minimal, self-contained, reproducible code. > >> > >>> > >> > >> > >> > > >> > [[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 > >> > https://www.R-project.org/posting-guide.html > >> > and provide commented, minimal, self-contained, reproducible code. > >> > > >> > >> [[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 > https://www.R-project.org/posting-guide.html > >> and provide commented, minimal, self-contained, reproducible code. > > ______________________________________________ > 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 > https://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > [[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 https://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
