Hi r-help-boun...@r-project.org napsal dne 17.08.2009 17:41:59:
> > Dear all, > > I'm trying to replace NA values with -9999 in one column of a data frame. I've Well, Jim sent you a solution but I would rise a question, why do you want to do that. R has many instruments how to smoothly handle NA (missing values) but not many how to handle -9999 values. See ?na.omit na.action or na.rm parameters in many modelling or summary functions. Regards Petr > 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. ______________________________________________ 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.
