Or... > X = c ("red", "blue", "green", "black" ) ; Y = c("red", "blue", "green", "magenta", "cyan") > unique ( c ( X [X %in% Y] , Y [Y %in% X] ) ) [1] "red" "blue" "green" >
David -----Original Message----- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Praveen Surendran Sent: Thursday, July 16, 2009 11:42 AM To: r-help@r-project.org Subject: [R] Finding missing elements by comparing vectors Hi, Is there a function in R to do a-b where a and b are two non-numeric sets (or intersection complement of these two sets). Kind Regards, Praveen. [[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. ______________________________________________ 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.