On 17-05-2013, at 08:36, jpm miao <[email protected]> wrote: > Hi, > > I have a sequence whose 1st, 3rd, 4th, 6th are non-NAs. How could I let R > return 1,3,4,6, the indices? > > I know only how to find the non-NA elements. Thanks, > > Miao > >> test<-c(2,NA,6,8,NA,12) >> test[is.na(test)==FALSE] > [1] 2 6 8 12
?which which(!is.na(test)) Berend ______________________________________________ [email protected] 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.
