It is assumed that you have read Sections 3.1–3.4 of R4DS and completed Preparation 3 prior to completing this activity.

In this activity, you will:

• Create boxplots and scatterplot visualizations using {ggplot2}.
• Combine multiple geometric layers in one visualization.
• Identify when to map an aesthetic to a feature of a dataset or set to a specific value.

Remember to take these steps slowly, help each other out, and get a hold of your instructor when you have questions or issues. These directions have been slightly modified from Activity 1 to hopefully further reduce these steps in Activity 3.1 and beyond.

You may need your PAT that you created in Preparation 2. If you misplaced this token, you will need to create a new one prior to beginning these steps.

1. In this GitHub repo, click on the Fork icon near the upper-right-hand corner. You should be taken a copy of this repo that is in your GitHub account - your page title should be {username}/activity02-ggplot2-intro, where {username} is replaced with your GitHub username.
2. Click on the green Code button.

• Verify that the drop-down identifies that you are using the HTTPS method (this is probably the default view; otherwise, select “HTTPS”).
• Click on the icon to copy the repo HTTPS information.

3. Log in to the RStudio Server.

• Verify that you are in an RStudio session (it doesn’t matter if it is a previous Project session or a “vanilla” RStudio session).

4. ONE TIME ONLY Note that we are using Git syntax to (hopefully) store your GitHub credentials in RStudio for the entire semester (for ten millions seconds or just over 16 weeks).

   • In the Console pane (left-hand pane), select the Terminal tab. Once this loads, you should see a line of information followed by a $ and blinking cursor. Here, type the following and press Enter/Return (note the use of single quotation marks):

   git config --global credential.helper 'cache --timeout=10000000'

5. Create a new Project. You can do this by clicking on the icon or through the menus (File > New Project…).

• In the New Project Wizard pop-up, select Version Control on the Create Project screen, then select Git on the Create Project from Version Control screen.
• On the Clone Git Repository screen, paste the HTTPS information from (2) into the Repository URL dialog box. It should look like: https://github.com/<username>/activity02-ggplot2-intro.git
• The Project directory name dialog box should automatically populate with your repository name, but sometimes Macs have an issue with this (if so, click into this box and press the command key on your keyboard). It should look something like: activity02-ggplot2-intro
• In the Create project as subdirectory of dialog box, click on Browse.
• In the Choose Directory pop-up, navigate to your class-level folder (i.e., you were encouraged to create a folder named either STA418 or STA518) You were also encouraged to create anactivities folder within your class-level folder to help organize our materials. Once you have navigated to the folder you wish this repo to be located, click Choose.
• Verify that the Create project as a directory of dialog box contains the folder location that you previously specified, then click on Create Project.
• You may be asked to login with your GitHub credentials on a Clone Repository pop-up window. Provide your GitHub username and PAT (not your GitHub password) if prompted.

6. After a few seconds, your RStudio session will refresh and you should be in your newly created RStudio Project!
7. ONE TIME ONLY If you weren’t previously asked to provide your GitHub username and PAT, we will attempt to force a prompt so that RStudio will not ask for them anymore (wahoo!).

• Open the activity02-ggplot2-intro.Rmd file. This should open on the upper-left-hand portion of your RStudio session.
• In your RMarkdown document, edit the top portion (the YAML) that currently says author: "Name" so that it contains your name and save your changes.
• In the Git pane (upper-right-hand pane), select the activity02-ggplot2-intro.Rmd file and click Commit.
• In the pop-up window, provide a meaningful commit message (e.g., “Add author name”) and click the Commit button.
• Click the icon. You should be asked for your GitHub credentials - provide your GitHub username and PAT. If you were not, RStudio has already stored them!

The activity02-ggplot2-intro.Rmd file contains the directions for this activity. For the rest of this class period, you will complete the RMarkdown document with your neighbor(s). Your instructor will be circling and be available to help when needed.

Note that each person is working in their own repo. We are not worrying about collaborating for the time being and instead will be working on being more comfortable with the workflow for working between RStudio and GitHub.

However, do not continue in this README document until you and your neighbor(s) have completed your .Rmd files.

YOU DID IT!

Take 5 minutes to write a reflection on what you feel confident in and what you need to spend some time better understanding. What is one thing you can do to help clarify your current misunderstandings?

Next: Activity 3 will cover the foundational syntax of programming in R.