Hi
r-help-boun...@r-project.org napsal dne 13.01.2009 11:58:45: > Dear list, > > as a result of a logical operation I want to assign > a new variable to a DF with NA-values. > > z <- data.frame( x = c(5,6,5,NA,7,5,4,NA), > y = c(1,2,2,2,2,2,2,2) ) > > p <- (z$x <= 5) & (z$y == 1) > p > z[p, "p1"] <-5 > z > # ok, this works fine > > z <- z[,-3] > > p <- (z$x <= 5) & (z$y == 2) > p > z[p, "p2"] <-5 > z > # this failed... - how can I assign the value '5' to the new > # var "p2" z[which(p), "p2"] <-5 works. Regards Petr > > Thanks for any help!! > Patrick > > ______________________________________________ > 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.
