This is an R Markdown presentation.

Markdown is a simple formatting syntax for authoring HTML, PDF, and MS Word documents.

For more details on using R Markdown consult the R Markdown page on the course website.

R markdown is a convenient way to present your R scripts that allows you to:

• Embed R code
• Run R code chunks
• Display R graphics output
• Annotate and explain your code
• Display mathematical equations (LaTeX)

You will be handing in all of your homework as .Rmd documents.

From within RStudio, you need to do four things:

1. Create an .Rmd document
2. Write some text
3. Write some code
4. Render the document

In the RStudio menu, select File => New File => R Markdown …

• Give your document a title.
• Add your name.
• Add the date.
• Select HTML or PDF (you can change this later).

• “YAML ain’t markup!”
• Encodes some metadata about the document

• Use R Markdown tags to format the document (it’s simple!)
• Headers, paragraphs, lists, etc. each use special symbols
• Use escape char \ for special symbols like Greek letters
• Use $ and $$ for LaTeX-formatted equations

• Insert blocks of code using
  • the RStudio menu: Insert => R
  • keyboard shorcut: Command+Option+i (Mac) or Control+Option+i (PC)
• Code blocks are enclosed by ```{r} and ```
• Comments start with #

• echo=FALSE to hide the code; eval=FALSE to hide execution result (TRUE by default)
• Can specify size

• Click the Knit button to generate a document that includes both content as well as the output of any embedded R code chunks within the document.
• Knit your document to HTML or PDF, Word, or a variety of other formats (e.g. slide presentations).

Exercise

• Open the R project you just created
• Start an R Markdown document
  • You will see some placeholders
  • Replace these with some of your own text and code
• Knit your .Rmd file to html or pdf
  • Note that it will automatically be saved when you knit it