You give us far too little information about what you do, what you want and what happens.
Given that, the only help one can give is: Read the documentation. :) -- Regards, Bjørn-Helge Mevik, dr. scient, Research Computing Services, University of Oslo ______________________________________________ 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.