Dear Knut, Here's one way:
> as.vector((table(Dup) > 1)[Dup]) [1] TRUE TRUE TRUE FALSE TRUE TRUE TRUE FALSE Someone will probably think of something cleverer. I hope this helps, John -------------------------------------- John Fox, Professor Emeritus McMaster University Hamilton, Ontario, Canada Web: socialsciences.mcmaster.ca/jfox/ > -----Original Message----- > From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Knut > Krueger > Sent: Monday, November 19, 2018 9:42 AM > To: r-help@r-project.org >> r-help mailing list <r-help@r-project.org> > Subject: [R] unique() duplicate() not what i am looking for > > It should be simple but i do not find the right keywords: > > > Dup = c(1,2,3,4,1,2,3,5) > > I need 4,5 as result > > unique(Dup) gives me [1] 4 1 2 3 5 > > duplicated(Dup) gives me > [1] FALSE FALSE FALSE FALSE TRUE TRUE TRUE FALSE > > I need > [1] TRUE TRUE TRUE FALSE TRUE TRUE TRUE FALSE > > > Kind regards Knut > > ______________________________________________ > 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. ______________________________________________ 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.