Crash Course

3. Crash Course in R-Program
Why R?
Install R – free! Also available in Computer Labs if you don’t have a
labtop or it does not work.
Tons of online resources! If you are stuck, google your problem. For
example, “how do I only keep certain observations in R?”
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3. Install R for Windows
R for Window
Go to www.r-project.org
Click the “download R” link under “Getting Started”.
Click on “https://cloud.r-project.org/” to install from nearest server
Click on “Download R for Windows”
Click on the “install R for the frst time” link at the top of the page.
Click “Download R-4.2.2 for Windows” and save the executable fle
somewhere on your computer.
Right click on the .exe fle and select “Run as administrator,” follow the
installation instructions.
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3. Install R for MAC
R for MAC
Go to www.r-project.org
Click the “download R” link in the middle of the page under “Getting
Started.”
Click on “https://cloud.r-project.org/” to install from nearest server
Click on the “Download R for macOS” link at the top of the page.
Save the .pkg fle with the latest release (4.2.2), double-click it to
open, and follow the installation instructions.
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3. Install R Studio
Install R Studio: ideal to work with R – free!
Go to www.rstudio.com and click on “Download”.
Click the tab “Products” and click on “RStudio”
Click on “DOWNLOAD RSTUDIO” and click “DOWNLOAD
RSTUDIO” below RStudio Desktop
Scroll to “All Installers and Tarballs” and choose the fle for your
operating system.
Right-click on .exe fle (Windows) and select “Run as administrator”
(Mac: save the .dmg fle on your computer, double-click it to open,
and then drag and drop it to your applications folder.)
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3. Working in R Studio
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3. Projects and Scripts
Use a “Project” to work in R
Click on File, New Project, New Directory, New Project.
Give the directory a name, for example “CDM” and save all data, code,
etc. in that directory
R Studio will automatically search for data, scripts, etc. in your project
folder.
Use “Scripts” to save your code
Click on File, New File, R Script: Here is where you can write/save
your code (top left)
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3. Installing Packages and Loading Packages
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