Judith I think you'll find the issue is that read.csv creates a data.frame and your subsetting syntax dat[is.na(dat)] is assuming it to be a matrix. If this is the case, you have two options:
Coerce dat into a matrix with as.matrix(dat); Use apply() to replace the missing data for each column in turn ... apply(dat, 2, function(x) x[is.na(x)] <- 'N') HTH ....... Peter Alspach > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Judith Flores > Sent: Thursday, 24 April 2008 11:20 a.m. > To: RHelp > Subject: [R] Replecing empty values with a letter (continuation) > > Sorry, I hit the send botton by accident. Here is my code so far: > > dat<-read.csv('myfile.csv', na.strings="") dat[is.na(dat]<-'N' > > But it doesn't replace the <NA> for the letter 'N'. > > > I am using R v 2/7/0, running it under Windows XP. > > Thank you, > > Judith > > > > ______________________________________________________________ > ______________________ > Be a better friend, newshound, and > > ______________________________________________ > 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. > The contents of this e-mail are privileged and/or confidential to the named recipient and are not to be used by any other person and/or organisation. If you have received this e-mail in error, please notify the sender and delete all material pertaining to this e-mail. ______________________________________________ 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.
