Hi Kate, is.na() does not work on entire data frames. You just need to specify the column, for example:
data[is.na(data[, 8]), 8] <- 0 if the NAs were in column 8. Best regards, Josh On Tue, Nov 9, 2010 at 9:33 AM, Kate Hsu <[email protected]> wrote: > Dear r-users, > > Basically, I have a data as follows, > >> data > S s1 s2 s3 s4 s5 prob obs num.strata > 1 NNNNN N N N N N 0.0000108 32 <NA> > 2 NNNNY N N N N Y 0.0005292 16 <NA> > 3 NNNYN N N N Y N 0.0005292 24 <NA> > 4 NNNYY N N N Y Y 0.0259308 8 1 > .... > > I want to replace <NA> by 0, when I tried the following command, I get som > error message. > data[is.na(data)]<-0 > > Warning message: > In `[<-.factor`(`*tmp*`, thisvar, value = 0) : > invalid factor level, NAs generated > > Anyone knows how to deal with this? > > Thanks, > > Kate > > [[alternative HTML version deleted]] > > ______________________________________________ > [email protected] 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. > -- Joshua Wiley Ph.D. Student, Health Psychology University of California, Los Angeles http://www.joshuawiley.com/ ______________________________________________ [email protected] 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.
