Re: [R] Getting tripped up on NAs in trying to create new variable

2010-10-17 Thread Gabor Grothendieck
On Sun, Oct 17, 2010 at 9:03 PM, Greg Blevins wrote: > Hello R help: > > I have the following data: > > a <- c(NA, 2, 2, 3, 2, NA) > b <- c(NA, NA, 3, NA, 1, 3) > df <- data.frame(a, b) >> df >   a  b > 1 NA NA > 2  2 NA > 3  2  3 > 4  3 NA > 5  2  1 > 6  NA 3 > > I want to create variable c such

Re: [R] Getting tripped up on NAs in trying to create new variable

2010-10-17 Thread Peter Alspach
om: r-help-boun...@r-project.org [mailto:r-help-boun...@r- > project.org] On Behalf Of Greg Blevins > Sent: Monday, 18 October 2010 2:04 p.m. > To: r-help@r-project.org > Subject: [R] Getting tripped up on NAs in trying to create new variable > > Hello R help: > > I have the

[R] Getting tripped up on NAs in trying to create new variable

2010-10-17 Thread Greg Blevins
Hello R help: I have the following data: a <- c(NA, 2, 2, 3, 2, NA) b <- c(NA, NA, 3, NA, 1, 3) df <- data.frame(a, b) > df a b 1 NA NA 2 2 NA 3 2 3 4 3 NA 5 2 1 6 NA 3 I want to create variable c such that if there is a 3 in either variable a or variable b, variable c is 1(rows 3, 4