In my Windows XP, I just have to load package every time I open R, but not Install !!
There must be some problem during installation ! Chakri -- View this message in context: http://r.789695.n4.nabble.com/installing-and-loading-packages-tp887190p2292339.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.