?read.table na.strings='.'
Then change all NAs to zero df$col[is.na(df$col)] <- 0 On Tue, Jan 12, 2010 at 12:46 PM, karena <dr.jz...@gmail.com> wrote: > > hi, I have a question about importing data in R. > > I want to import a file which has missing value in it, and the missing > values are denoted as ".", I want to first read in the file, and then > change > the "." into the number zero "0". > > how can I do that? > > thank you, > > karena > -- > View this message in context: > http://n4.nabble.com/how-to-handle-missing-values-when-importing-data-in-R-tp1012298p1012298.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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<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? [[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.
