Well, how about the nomatch argument to the match function, see ?match . The nomatch argument is NA by default.
-----Original Message----- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Peng Yu Sent: Tuesday, September 15, 2009 4:05 PM To: r-h...@stat.math.ethz.ch Subject: [R] How to remove 'NA's? Hi, > match(c(3,4), c(3,2,1)) [1] 1 NA The above result has 'NA' in. Is there a way to make 'match' does not produce any 'NA's? Regards, Peng ______________________________________________ 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.