Il giorno mer, 20/10/2010 alle 00.05 -0700, Dieter Menne ha scritto:
> The following complete code works for me. Do you have the current version > of lattice/R installed? > So the problem could be somewhere else. I suspected some of this kind. RShowDoc("NEWS", package = "lattice") tell me that is the 0.18 version I actually do not know how to check which version of lattice I have For the rest Ubuntu 10.04 -- GNU Emacs 23.1.50.1 (x86_64-pc-linux-gnu, GTK+ Version 2.18.0) ESS version 5.8 -- R 2.10.1 ______________________________________________ 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.