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
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