A solution on the link below provides the steps of updating R without losing packages in Unix. http://zvfak.blogspot.se/2012/06/updating-r-but-keeping-your-installed.html
How could I do that on windows 7 platform? Thanks ______________________________________________ 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.