Gang Chen wrote: > Hi experts, > > I just started to learn R today, and tried to work with an add-on > package sem. I have a version of 2.3.1 on MacOS X 10.4.6 with sem put > under /Library/Frameworks/R.framework/Versions/2.3/Resources/library > > However when I typed > > library(sem) > > the following error showed up: > > Error in library(sem) : 'sem' is not a valid package -- installed < > 2.0.0?
Please read the R Installation and Administration manual on how to install packages (e.g. with R CMD INTALL in the OS' console or install.packages() in R) Uwe Ligges > Why is this? > > Thank you, > Gang Chen > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
