This posting is only to celebrate that R-help-es (R-help for Spanish Speakers) have reached 500 members!
(and to thank Patricia for doing the bulk of admin work). Kjetil ______________________________________________ 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.