On 30-10-2012, at 22:08, vincent guyader wrote: > Hi everyone, > > i'm looking for a "NA-friendly" operator > > I explain : > > vec<-c(3,4,5,NA,1,NA,9,NA,1) > > vec[vec == 1] # NA 1 NA NA 1 > > I dont want the NA's : > vec[vec == 1 & ! is.na(vec)]# 1 1 > is the same as > vec[vec %in% 1] # 1 1 > > %in% is NA-friendly :) > > But if i want >2 without the NA's : > > vec[vec>2] #3 4 5 NA NA 9 NA > > if i dont want the NA i have to do : > > vec[vec>2 & !is.na(vec)] #3 4 5 9 > > is there an opérator to directly do that?
You could define one "%>.nona%" <- function(x,y) x[x>y & !is.na(vec)] and use vec %>.nona% 2 Use ?`%in%` to see an example (in the Examples section) Berend ______________________________________________ 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.
