Andrew -
I believe
character.data$z = ifelse(is.na(character.data$x),
character.data$y,character.data$x)
should do what you want.
- Phil Spector
Statistical Computing Facility
Department of Statistics
UC Berkeley
spec...@stat.berkeley.edu
On Thu, 24 Feb 2011, Andrew Anglemyer wrote:
Thanks! Unfortunately, in my effort to simply the question, I didn't really
adequately describe the problem. This solution is perfect in the numeric
case I presented, but what about in the case of character classes! Let me
try again:
I have
character.data
id x y
1 1 "a" NA
2 2 "b" "b"
3 3 "c" "c"
4 4 NA "d"
And I want first
new.character.data
id x y z
1 1 "a" NA "a"
2 2 "b" "b" "b"
3 3 "c" "c" "c"
4 4 NA "d" "d"
Thanks again!
On Thu, Feb 24, 2011 at 4:27 PM, Ista Zahn <iz...@psych.rochester.edu>wrote:
I think the easiest way is probably
data$z <- rowMeans(data[, c("x", "y")], na.rm=TRUE)
Best,
Ista
On Fri, Feb 25, 2011 at 12:12 AM, Andrew Anglemyer
<andrew.anglem...@gmail.com> wrote:
I am trying to combine two columns in a data frame into one column. Some
values in either column are missing, but not in the same row for the two
different columns. Additionally, when both columns in a row contain
data,
the data are identical. I want a new column with the identical data or
the
data from the column with observed data. For example:
I have
data
id x y
1 a 1 NA
2 b 2 2
3 c 3 3
4 d NA 4
And I want
new.data
id x y z
1 a 1 NA 1
2 b 2 2 2
3 c 3 3 3
4 d NA 4 4
I've looked through the help and there are column combining solutions,
but
they don't seem to work well for this solution.
Thanks for any help!
Andy
[[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.
--
Ista Zahn
Graduate student
University of Rochester
Department of Clinical and Social Psychology
http://yourpsyche.org
[[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.
______________________________________________
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.
