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Accessing R in IDAS
For research users
Summary
R can be used with both RStudio and JupyterLab in IDAS.
When you log in to IDAS, you can choose the default interface (RStudio or JupyterLab).
In the Server Options form, under IDAS Image:
Choose an RStudio option, such as
IDAS-R-RStudio-4.4.1, to start RStudio.Choose an R option, such as
IDAS-R-4.4.1, to start JupyterLab.
In JupyterLab:
Click the R tile under Notebook to start a Jupyter Notebook with R.
Click the RStudio tile under Notebook to start RStudio.
See the steps below for more details.
1. Follow the steps here to log in to IDAS: Accessing IDAS for Research Use
2. In the Server Options form, click on the drop down menu under IDAS Image:
3. Under IDAS Image, choose one of the options for R or RStudio.
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4. If you choose one of the RStudio options under IDAS Image, for example, IDAS-R-RStudio-4.4.1, you will see RStudio after your session starts.
From here, you can use RStudio as normal.
5. R can also be used with JupyterLab. If you choose one of the R options under IDAS Image, for example, IDAS-R-4.4.1, you will see JupyterLab after your session starts.
To use Jupyter Notebook with R, click the R tile under Notebook:
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This will start a Jupyter Notebook with R:
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To use RStudio, click on the RStudio tile under Notebook:
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This will open RStudio in a new tab in your web browser:
From here, you can use RStudio as normal.
For class users
When the instructor of the class requests IDAS for the class, they can select a programming language (Python, R, or Julia) and a programming interface (JupyterLab or RStudio). The instructor’s choice will determine what students see when they log in to IDAS.
Instructors can contact research-computing@uiowa.edu if they would like to change the programming language or interface for the class.
Switching between JupyterLab, Jupyter Notebook, and RStudio
The following interfaces are available in IDAS:
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For class users, the interfaces that are available will depend on the programming language requested by the instructor of the class.
This rest of this article outlines a few common tasks using RStudio in IDAS. For more information about RStudio, please see the official website for Posit: https://posit.co/
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To download a folder, check the box next to it. Click More, then Export. Enter a name for the downloaded file, then click Download. The folder will be downloaded as a .zip file.
To download multiple files and folders, check the boxes next to those files and folders. Click More, then Export. Enter a name for the downloaded file, then click Download. They will be downloaded as a .zip file.
Working with the Terminal in IDAS
The Terminal allows you to perform more tasks in IDAS, including checking system information, managing files and folders, and installing packages. Below are a few common tasks that may be helpful in IDAS.
Accessing the Terminal in RStudio
To access the Terminal, click on the Terminal tab next to the Console tab in RStudio.
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This will open a command line interface (the Terminal):
Checking information using the Terminal
The following commands can be typed after the prompt $ in the Terminal:
pwd: prints the current working directory. If you are in your IDAS home directory, the directory will be/home/HawkID, whereHawkIDis your HawkID.ls -a: lists the files and directories in your current directory. The-aoption lists all files, including hidden files that start with., such as.bashrc.cd <destination>: change directory to a destination directory. For example,cd demo: changes to thedemodirectorycd: (with no argument) returns to your home directory
Contact
If you have any questions or comments, please contact mailto:research-computing@uiowa.edu.
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