Thanks a lot. But an ignorant R user, like me, needed the code example from Jim Holtman posted outside the list earlier today to understand that:
x62_samvar$cn <- x62_samvar$cn[,drop=TRUE] was the way to code. Thank you both! /CG On Thu, July 19, 2007 3:01 pm, Uwe Ligges said: > > > CG Pettersson wrote: >> Dear all! >> >> W2k, R 2.5.1 >> >> I am working with an ongoing malting barley variety evaluation within >> Sweden. The structure is 25 cultivars tested each year at four sites, in /snip >> >> Where do I go wrong and how do I use subset in a proper way? > > > So you have to drop the levels you are excluding. Example: > > x <- factor(letters[1:4]) > x > x[1:2] > x[1:2, drop=TRUE] > > > Uwe Ligges > > > > >> Thanks >> /CG >> > -- CG Pettersson, PhD Swedish University of Agricultural Sciences (SLU) Dept. of Crop Production Ecology. Box 7043. SE-750 07 Uppsala, Sweden [EMAIL PROTECTED] ______________________________________________ [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.
