Look at which(x>100)
This is a zero-length vector. The negative of nothing is nothing, not a list of all possible index values. Do you want x[ !( x > 100 ) ] ? On April 18, 2018 6:13:30 AM CDT, Ashim Kapoor <ashimkap...@gmail.com> wrote: >Dear All, > >Here is a reprex: > >> x<- 1:100 >> x[-which(x>100)] >integer(0) > >In words, I am finding out which indices correspond to values in x >which >are greater than 100 ( there are no such items ) . Then I remove >those >indices. I should get back the x that I started with since there are no >items in x which are bigger than 100 . Instead, it is returning an >empty >vector. > >Why is this ? What am I misunderstanding? > >Best Regards, >Ashim > > [[alternative HTML version deleted]] > >______________________________________________ >R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >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. -- Sent from my phone. Please excuse my brevity. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
