yes!! I join group study that study R-programming...
so I really tried..only to fail and made many erros.. I really don't know how to perform this... -- View this message in context: http://r.789695.n4.nabble.com/hi-l-have-a-question-please-help-me-tp2307569p2308091.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.