testdata[is.na(testdata$onecolumn)] <- -9999 On Mon, Aug 17, 2009 at 11:41 AM, Steve Murray<smurray...@hotmail.com> wrote: > > Dear all, > > I'm trying to replace NA values with -9999 in one column of a data frame. > I've tried using is.na and the testdata[testdata$onecolumn==NA] <- 9999 > approach, but whilst neither generate errors, neither result in -9999s > appearing - the NAs remain there! > > I'd be grateful for any advice on what I'm doing wrong or any other suitable > approaches. > > Many thanks, > > Steve > > _________________________________________________________________ > > oticons. > > ______________________________________________ > 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. >
-- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve? ______________________________________________ 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.