I'm pretty sure that what you have is not what you think you have. Do a str(Elder1) on the data set and you will see that age is a factor not a numerical variable. Bascally you have a mangled data set from the look of it.
Why would you want to change NA's to 0's? John Kane Kingston ON Canada > -----Original Message----- > From: ecoking...@yahoo.co.in > Sent: Sun, 19 Jan 2014 11:39:43 -0800 (PST) > To: r-help@r-project.org > Subject: [R] how to replace <NA> values > > Dear R community > B > I have a large data set contain some empty cells. BecauseB of that,B may > be I am wrong, <NA> values are produced. > Now I want replace both empty and <NA> values with zero. > B > Elder1 <- data.frame( > B ID=c("ID1","ID2","ID3","ID6","ID8"), > B age=c(38,35,"",NA,NA)) > Output I am expecting > B > IDB B age > ID1B 38 > ID2B 35 > ID3B 0 > ID6B 0 > ID8B 0 > B > In advance I thank your help. > > > > -- > View this message in context: > http://r.789695.n4.nabble.com/how-to-replace-NA-values-tp4683831.html > Sent from the R help mailing list archive at Nabble.com. > [[alternative HTML version deleted]] > > ______________________________________________ > 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. ____________________________________________________________ Send your photos by email in seconds... TRY FREE IM TOOLPACK at http://www.imtoolpack.com/default.aspx?rc=if3 Works in all emails, instant messengers, blogs, forums and social networks. ______________________________________________ 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.