On Thu, Apr 5, 2012 at 3:07 PM, Dirk Eddelbuettel <e...@debian.org> wrote: > > Julio, > > Nobody mentioned the _set_ operations union(), intersect(), setdiff(), > which are described under 'help(union)' (and the other names, of course)
... but which are basically wrappers for match(). -- Bert > > R> X <- c(10:13, 17,18) > R> Y <- c(11,12,17,18) > R> intersect(X, Y) # gives the actual values > [1] 11 12 17 18 > R> X %in% intersect(X, Y) # use %in% to map to bool as desired > [1] FALSE TRUE TRUE FALSE TRUE TRUE > R> > > Oh, and no need to reply on-list to thousands of list subscribers if you > found this helpful. These one-line 'thanks' message are not that universally > useful, even though they are very polite :) > > Dirk > > -- > R/Finance 2012 Conference on May 11 and 12, 2012 at UIC in Chicago, IL > See agenda, registration details and more at http://www.RinFinance.com > > ______________________________________________ > 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. -- Bert Gunter Genentech Nonclinical Biostatistics Internal Contact Info: Phone: 467-7374 Website: http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm ______________________________________________ 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.
