how to handle missing values "." when importing data in R
Hi, tim, thank you very much for the reply, but I am really a new user. How to change all NAs to zero? thanks again. karena
jholtman wrote:
?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.jzhou at 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 at 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 at 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.
View this message in context: http://n4.nabble.com/how-to-handle-missing-values-when-importing-data-in-R-tp1012298p1012318.html Sent from the R help mailing list archive at Nabble.com.