How do I manually install an R package?

Go into R, click on Packages (at the top of the R console), then click on “Install package(s) from local zip files”, then find the zip file with arm from wherever you just saved it. Do the same thing to install each of the other packages you want to install.

How install all R packages?

To install any package from CRAN, you use install. packages() . You only need to install packages the first time you use R (or after updating to a new version). R Tip: You can just type this into the command line of R to install each package.