How can I create intersections of vectors? a <- c(1,2,3) b <- c(1,5,6) the intersected list c should contain c(1)... Ralf
?intersect -- John A. Ramey, M.S. Ph.D. Candidate Department of Statistics Baylor University On Thu, May 6, 2010 at 12:48 PM, Ralf B <ralf.bierig at gmail.com> wrote:> How can I create intersections of vectors? > > a <- c(1,2,3) > b <- c(1,5,6) > > the intersected list c should contain c(1)... > > Ralf > > ______________________________________________ > R-help at 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. >
Check ?'%in%'> a[a %in% b]1 On Thu, May 6, 2010 at 7:48 PM, Ralf B <ralf.bierig@gmail.com> wrote:> How can I create intersections of vectors? > > a <- c(1,2,3) > b <- c(1,5,6) > > the intersected list c should contain c(1)... > > Ralf > > ______________________________________________ > 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. >-- Joris Meys Statistical Consultant Ghent University Faculty of Bioscience Engineering Department of Applied mathematics, biometrics and process control Coupure Links 653 B-9000 Gent tel : +32 9 264 59 87 Joris.Meys@Ugent.be ------------------------------- Disclaimer : http://helpdesk.ugent.be/e-maildisclaimer.php [[alternative HTML version deleted]]
On May 6, 2010, at 1:48 PM, Ralf B wrote:> How can I create intersections of vectors? > > a <- c(1,2,3) > b <- c(1,5,6) > > the intersected list c should contain c(1)...Is your help function not working?> > Ralf > > ______________________________________________ > R-help at 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.David Winsemius, MD West Hartford, CT