What do you want to happen when both are NA? what do you want to happen if both have values?
-- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.s...@imail.org 801.408.8111 > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- > project.org] On Behalf Of Erin Hodgess > Sent: Thursday, June 16, 2011 7:59 PM > To: R help > Subject: [R] combining strings > > Dear R People: > > Suppose I have the following two character vectors: > > xf > [1] "W" NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA > > xg > [1] NA "k" "h" NA "g" "r" "j" NA "v" "d" NA "v" NA "z" "r" "r" > "i" > > > > I want to end up with > > "W" "k" "h" ... > > What is the best way to achieve this, please? I was thinking that if > there is an exclusive "or" that it might work. I've tried all kinds > of ifs, and ifelse, to no avail. > > > Thanks, > Erin > > > -- > Erin Hodgess > Associate Professor > Department of Computer and Mathematical Sciences > University of Houston - Downtown > mailto: erinm.hodg...@gmail.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. ______________________________________________ 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.
