R is the name of both:
RStudio is a user-friendly interface around R that makes the programming experience much nicer. It bundles together
The programming language R comes with built-in functionality, like
computing the square root with the sqrt() function. Over
the years, R users have created lots of additional functionalities that
is available on demand. If you particular application requires extra
functionality not available with the basic R installation, you can add
it by installing packages. A package is an additional bit of
functionality and it needs to be installed only once to bring it from
the web to your own R installation. However, it is also important to
keep packages updated once or twice a year.
This document explains how to
If you have a previous R installation, please uninstall the following software from your PC if you have it:
Download the installer: https://cran.r-project.org/bin/windows/base/R-4.4.0-win.exe
Open the installer and follow the instructions.
Download RTools:
If you have a Windows 64-bit PC (most likely) click here: https://cran.r-project.org/bin/windows/Rtools/rtools43/files/rtools43-5958-5975.exe
If you have a Windows 32-bit PC (if your PC is quite old) you may need to find an older version here: https://cran.r-project.org/bin/windows/Rtools/
Open the installer and follow the instructions.
If you have a previous R installation, please go to the Applications folder in your Finder window and move the following applications to the Bin:
Check which Apple PC you have. On the top-left of your screen click the Apple logo, click About This Mac, note what the Processor line says. If it has the word “Intel”, you want to follow 1 below, and 2 otherwise.
Download this if you have an Apple M1-M3 macOS PC: https://cran.r-project.org/bin/macosx/big-sur-arm64/base/R-4.4.0-arm64.pkg
Download this if you have an older Intel-based macOS PC: https://cran.r-project.org/bin/macosx/big-sur-x86_64/base/R-4.4.0-x86_64.pkg
Open the installer and follow the instructions.
Download XQuartz: https://xquartz.macosforge.org/.
Open the installer and follow the instructions.
You cannot install R on Chromebooks. You need to access a version of R installed on a remote machine or server.
Go to https://posit.co/download/rstudio-desktop/ and, under section “2: Install RStudio”, click the big blue “Download RStudio Desktop” button.
Open the installer and follow the instructions.
Go to https://posit.co/download/rstudio-desktop/ and, under section “2: Install RStudio”, click the big blue “Download RStudio Desktop” button.
Open the installer and follow the instructions.
You cannot install RStudio on Chromebooks. You need to access a version of R installed on a remote machine or server.
If your R version or packages are old, you might get errors or find that the code required to run some examples is different from the one provided.
Recall that R is the underlying programming language, while RStudio is just a wrapper around R providing a nicer user interface (text editor, file explorer and graphical window). Updating RStudio (the interface) will not update the R programming language which runs your code.
Check that your R version is up-to-date by typing into the R console:
versionAfter pressing Enter, you should see something like this:
platform << this will be different for each of you >>
arch << this will be different for each of you >>
os << this will be different for each of you >>
system << this will be different for each of you >>
status
major 4
minor 4.0
<< and more lines which you can ignore... >>Please check here: https://www.r-project.org/ to see what the most recent version is. If you have a different number for “major” than the most recent, it may well be time for an update.
Open RStudio, and type the following in the R console. Press Enter to run the code.
install.packages("installr")
installr::updateR()To update R, you need to remove any old R installations and then reinstall R.
First, go to Finder, click Applications, and drag and drop R to the bin. Then, follow the instructions from A.1 to reinstall it.
You cannot install R on Chromebooks. You need to access a version of R installed on a remote machine or server.
You still may want to update packages, though. Check section C for that.
Open RStudio. In the R console, type the following and press Enter:
options(pkgType = "binary")
update.packages(ask = FALSE)