On Feb 9, 2013, at 1:40 PM, Lorenzo Isella <lorenzo.ise...@gmail.com> wrote:
> Dear All, > Probably a one liner, but I am banging my head against the floor. > Consider the following > > DF <- data.frame( > x=1:10, > y=10:1, > z=rep(5,10), > a=11:20 > ) > > mn<-names(DF) > > but then I cannot retrieve a column by doing e.g, > > DF$mn[2] > $ doesn't evaluate it's arguments so I think you want something like: DF[[mn[2]]] or DF[,mn[2]] Cheers, MW > I tried to play with the quotes and so on, but so far with no avail. > Any suggestion is welcome. > Cheers > > Lorenzo > > ______________________________________________ > 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.