How do you install packages in R? (Windows)

1. Make sure you know the name(s) of your package(s).
2. Open R. You should see an R Console.
3. Select Packages from the drop down menu. Choose Install package(s)...
4. You will be asked to choose a mirror. Choose a location that is near your area. Of course, the default 0-Cloud should be ok.
• If you run into speed problems, it might be a good idea to choose a different mirror.
5. Click Ok and then Packages will pop up. Select the packages you need.
• If you need multiple packages, you have to hold the Shift key and click on the appropriate packages. Alternatively, you can install packages one at a time.
• You will be asked "Would you like to use a personal library instead?" Choose yes for this question, and yes again for the next question (might be relevant for new users).

How do you install packages in R? (macOS)

1. Make sure you know the name(s) of your package(s).
2. Open R. You should see an R Console.
3. Select Packages & Data from the drop down menu. Choose Package Installer.
4. You will be asked to choose the Packages Repository and Install Location.
• Choose CRAN (binaries) as your Packages Repository. Click on Get List. You will be asked to choose a mirror. Choose a location that is near your area. 0-Cloud should be also ok.
• Select the packages you need. If you need multiple packages, you have to hold the Shift key and click on the appropriate packages. Alternatively, you can install packages one at a time.
• Choose At User Level as your Install Location. Put a check for Install Dependencies.
• Once you are done, click Install Selected.

How do you load packages in R? (Windows and macOS)

1. Make sure you know the name(s) of your package(s). Suppose the name is name-of-package.
2. Open R. You should see an R Console.
3. Type in library(name-of-package) and press enter.
4. If you encounter an error, it is likely you have not installed the package. You may encounter warnings, but these depends on the package.