Download R For Mac Yosemite
It is important to keep R and RStudio up-to-date. While it might be the case that you won't have any issues with older versions, as packages are updated, you may receive strange errors. Follow steps 1 to 5 to also upgrade R and RStudio to new versions.
Links to specific sections:
R | RStudio | TeX | Useful R Packages | Test Installation/Create RMarkdown Document
1. Determine the version of your operating system
In this example, the version of OS X is 10.10.5. This will dictate which version of R to download in the next step.
2. Download the appropriate version of R
Click on R for Mac OS X. You will see different options for different versions of OS X. Click on which package corresponds to your version. This will bring up the dialog to save the file.
3. Install R
Double click on the downloaded R package (PKG file) in the folder you specified. An example is shown below.
Follow the installation instructions. You do not need to open R after the completed installation. RStudio will automatically do that after it is installed and opened.
4. Download RStudio
RStudio is currently only available for Mac OS X 10.6 or higher. Click on RStudio for Mac OS X 10.6+. Click on the appropriate file corresponding to Mac OS X. This will again bring up the save file dialog.
5. Install RStudio
After your download has completed, find your version of RStudio in the folder you specified.
Double click on the downloaded DMG file and follow the installation instructions.
7. Install MacTeX
Find your version of MacTeX in the folder you specified.
Double click on the PKG file and follow the installation instructions. You do not need to open anything after MacTeX is finished installing.
8. Install useful R packages in RStudio
Download the file available at startup_packages.R. This is a text (script) file containing R commands that you will run. Double click on this downloaded file in your specified directory. This will open the file in RStudio. Shown below is only the top left pane of the four panes in RStudio and an example script file.
You now want to run all of this code to install the packages listed at the top. To do this, click on the Source button in the upper right of the top left pane (the one that has this code in it).
You should see some red text appear in the Console tab of the bottom left panel in RStudio. The code has downloaded the packages specified and you can now use them in your code as needed.
9. Test installation
To check that R, RStudio, and TeX have been installed correctly, we will create a sample R Markdown document. These types of documents will give you the ability to nicely document your code, include your code, and also the output that your code produces.
Select File > New File > R Markdown from the RStudio taskbar menu.
In the resulting screen, select Document on the left and select PDF as the Default Output Format. (This will check that MacTeX was appropriately installed. You can also create HTML or Word documents by choosing the appropriate output format here. You can also change your mind later and create any of (or all of) the three of these formats if you so choose.)
This creates a basic R Markdown file with some hints as to how to do a few things using R Markdown. To see what the resulting output looks like based on this code, click on the Knit PDF button near the top of the pane.
After giving the resulting PDF a name, you should obtain a PDF similar to the one shown below. The resulting PDF will be stored in the same directory as the Rmd (R Markdown file) you just created.
Questions
Contact Kristin Bott, associate director of instructional technology, at kbott@reed.edu.
Source: https://www.reed.edu/data-at-reed/software/R/r_studio.html
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