Thanks so much. It greatly enrich my mind. 2013/1/25 arun <smartpink...@yahoo.com>
> > > Hi, > x<-1:80 > y<- x[-(1:77)] > y > > #[1] 78 79 80 > #or > > ?tail() #already suggested > > If you want only the last element,, > library(pastecs) > last(x) > #[1] 80 > A.K. > > > > > ----- Original Message ----- > From: hp wan <huaping....@gmail.com> > To: r-help@r-project.org > Cc: > Sent: Thursday, January 24, 2013 7:23 PM > Subject: [R] How to extract elements from vector in reverse order? > > Hi all mailing listers, > > I wanna get the last several elments of vector. > e.g. x <- c(1,2,3,.....,78, 79, 80) > > How can I implement to assign last three elements to y, y <- c(78, 79, 80) > ? > > In Matlab, It can easily achieve by y=x(end-2:end) > > > Thanks > > Huaping Wan > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. > > [[alternative HTML version deleted]] ______________________________________________ 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.
