Meet the Toolkit

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# Meet the Toolkit
### Bora Jin

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<a href="https://introds.org" target="_blank">introds.org</a>

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## Material

🎥 Watch [Meet the Toolkit - Programming](https://youtu.be/Q2QN1RpvLq8)

- [Slides](https://rstudio-education.github.io/datascience-box/course-materials/slides/u1-d02-toolkit-r/u1-d02-toolkit-r.html#1)

🎥 Watch [Meet the Toolkit - Version Control and Collaboration](https://youtu.be/124DQasLyNQ)

- [Slides](https://rstudio-education.github.io/datascience-box/course-materials/slides/u1-d03-toolkit-git/u1-d03-toolkit-git.html#1)

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## Today's Goal

- Understand reproducibility and version control 
- Comfortably navigate RStudio fundamentals
- Be able to define common terms including: **data frame**, **function**, **variable**, **package**
- Interact with Git from RStudio (committing and pushing)
- Use a few functions, including: `glimpse()`, `group_by()`, `summarize()`, and `filter()`
- Understand the pipe operator `%>%`
- Create a reproducible report via today's application exercise using R Markdown

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## Quiz

**Q - What is a reproducible data analysis?**

Near-term goals:

- Exact/similar tables and figures can be generated from the code and data
- The code performs an intended task
- Purpose of the analysis is clear

Long-term goals:

- The code can be used for other data
- The code can be extended to do other things

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## Quiz

**Q - What is difference between R vs. RStudio?**

R:
- Open-source statistical programming language 
- Easily extensible with **packages**, collections of reproducible R code

RStudio: 
- Convenient interface for R called Integrated development environment (IDE)

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## Quiz

**Q - How do I install a package called** `unvotes` **and load it?**

```r
install.packages("unvotes")
library(unvotes)
```

**Q - How do I see a help page of data ** `un_votes`**?**

```r
?un_votes
```

**Q - What am I doing with** `un_votes$country`**?**

Accessing a column `country` in the data `un_vote`

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## Quiz

**Q - What can you do with R Markdown?**

- Create fully reproducible reports with code for analysis and text for narrative 
- Every assignment as an R Markdown document (with `.Rmd` extension)
- R Markdown document should be complete in itself. *The environment of your R Markdown document is separate from the R Console!*

**Q - How do I create a code chunk in an R Markdowm document?**

Three backticks

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## Quiz

**Q - What is difference between Git vs. GitHub?**

- Git: Version control system 
- GitHub: Home for Git-based projects on the internet

**Q - What is version control?**

Tracking changes (potentially with human readable messages)

**Q - Why is it important?**

- Otherwise you lose track of your work and become clueless where to go back when you need to fix things! e.g. final.docx, final2.docx, final_final.docx, final_final_XXXX.docx, ...
- At each version, important to leave an informative tag

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# Questions?

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## Let's Practice Together!

Go to [AE 02: Part 1, Tour of RStudio + GitHub](https://sta199-summer22.netlify.app/appex/ae02_BJ.html)

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## Bulletin

- Watch videos for [Prepare: May 13](https://sta199-summer22.netlify.app/prepare/week01_may13_BJ.html)