I don't know if I understood your problem, but maybe you can retrieve your columns simply in this way: > DF$y [1] 10 9 8 7 6 5 4 3 2 1
or (for looking at column) > DF[2] y 1 10 2 9 3 8 4 7 5 6 6 5 7 4 8 3 9 2 10 1 Bye D. 2013/2/9 Lorenzo Isella <lorenzo.ise...@gmail.com>: > Dear All, > Probably a one liner, but I am banging my head against the floor. > Consider the following > > DF <- data.frame( > x=1:10, > y=10:1, > z=rep(5,10), > a=11:20 > ) > > mn<-names(DF) > > but then I cannot retrieve a column by doing e.g, > > DF$mn[2] > > 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.