Thanks Jorge , I mistakingly (and foolishly) confused a vector of ranking, to a vector of ordering that ranked vector...
Patrick Burns explained to me that I was looking for: aa[order(aa)] df[order(df[,1]), ] Sorry, Tal On Sat, Mar 28, 2009 at 9:08 PM, Jorge Ivan Velez <jorgeivanve...@gmail.com>wrote: > > Dear Tal, > It works as it should. In this code: > > # Data > aa <- c(3, 1 ,2 ) > aa > [1] 3 1 2 > > aa[aa] > [1] 2 3 1 > > you are telling R to do the following: take the vector aa and select the > elements aa (in R language that is aa[aa]). If you look carefully, the third > element of aa is 2, the first is 3 and the second is 1. > > Perhaps I'm missing something but, to me, it works as expected. What would > you like to get? > > HTH, > > Jorge > > > On Sat, Mar 28, 2009 at 1:48 PM, Tal Galili <tal.gal...@gmail.com> wrote: > >> Hello people. >> >> I wish to reorder a simple vector of numbers by another vector of the >> order >> (and then do the same, but with a data frame rows) >> >> I try this (which doesn't work) : >> > aa <- c(3, 1 ,2 ) >> > aa[aa] >> [1] 2 3 1 >> >> The same won't work if I try to order a data frame: >> > data.frame(matrix(c(3,1,2), 3,2))[c(3,1,2),] >> X1 X2 >> 3 2 2 >> 1 3 3 >> 2 1 1 >> >> >> How should I do this? >> >> >> p.s: sorry if the question is too simple, but I couldn't find a good >> explanation for this on google. >> p.p.s: I am running R 2.8 >> >> >> Thanks, >> Tal >> >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> 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. >> > > -- ---------------------------------------------- My contact information: Tal Galili Phone number: 972-50-3373767 FaceBook: Tal Galili My Blogs: http://www.r-statistics.com/ http://www.talgalili.com http://www.biostatistics.co.il [[alternative HTML version deleted]] ______________________________________________ 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.
