RStudio is an integrated development environment (IDE) for R. It includes a console, syntax-highlighting editor that supports direct code execution, as well as tools for plotting, history, debugging and workspace management.
All the desktop apps can be found within the 'Desktop Apps' dropdown in our OnDemand web portal as shown in the image below:
After selecting RStudio Server, you will arrive at this page:
Here you can select the resources you would like your RStudio session to have using the menu on the lefthand side of the page. You can also access your files or launch the shell using the options in the center. After you click "Launch", a new session will be queued. Once the session is active you page will look like the image below:
Click on "Connect to RStudio Server" to begin using RStudio.
Once you have entered your session, you should see the RStudio page below:
This is a typical RStudio interface that should be familiar to most users.
More info on RStudio and its use can be found on the RStudio official support page.