On Sep 2, 2011, at 3:51 PM, Josh Tewksbury wrote:

Hello, I have a dataframe that looks like this:

 a b  NA Honduras  China NA  NA Sudan  Japan NA  NA Mexico  NA Mexico
I would like to replace the NA values in column b with the non-NA values in column a. I have tried a number of techniques, (if, ifelse) but I must have
the logic wrong.

Mangled data but no matter:

dfrm$b[is.na(dfrm$b)] <- dfrm$a[is.na(dfrm$b)]

(Learn to post in plain text. This is a plain text list.)


David Winsemius, MD
West Hartford, CT

______________________________________________
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.

Reply via email to