Hi Adrienne, I'm not familiar with your interface, but it sounds like R thinks the package "mvtnorm" is not installed. You can see the packages you've installed with:
row.names(installed.packages()) Is "mvtnorm" in the output of that command? You could test with the command, "mvtnorm" %in% row.names(installed.packages()) If the result of the above command is FALSE, you can install it with: install.packages("mvtnorm") Best, Ethan On Fri, Jun 10, 2011 at 12:00 PM, Adrienne Keller < adrienne.kel...@umontana.edu> wrote: > I am having problem loading packages in the newest version of R (2.13.0) on > my Mac. I have tried to install various packages (e.g. lawstat, Rcmdr, car) > and load them using the Package Installer and Package Manager menu options > but I get the follow error: > > > library(lawstat) > Loading required package: mvtnorm > Error: package 'mvtnorm' could not be loaded > In addition: Warning message: > In library(pkg, character.only = TRUE, logical.return = TRUE, lib.loc = > lib.loc) : > there is no package called 'mvtnorm' > > When I click on the box for loading lawstat in the Package Manager, it > immediately reverts back to an unchecked box. > > I have tried to load mvtnorm and then load lawstat but I get the same > error. > > Help? > > Thanks, > > Adrienne > > ______________________________________________ > 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. > [[alternative HTML version deleted]] ______________________________________________ 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.