Thanks to Michelle Berry for the presentation outline document.

Websites used to construct this presentation:

• RStudio RMarkdown Documentation
  

• Rmd Cheatsheet

• Knitr Reference Card

install.packages("rmarkdown")

• Markdown file with embedded R code chunks.
  • Markdown: text-to-HTML conversion tool for web writers.
    • Allows you to write using an easy-to-read, easy-to-write plain text format.
      
• Rmd -> md -> html (docx, pdf)
  
• Can include both text and code to execute

A convenient tool for reproducible and dynamic reports with R!

• Execute code with the knitr.
  
• Easy to learn syntax

Use it to consolidate your code and document into a single file:

• Slideshows, pdfs, html documents, word files

Easy to use with version control: Use with GitHub

YAML: A set of key value pairs at the start of your file. Begin and end the header with a line of three dashes (- - -)

R Studio template writes the YAML header for you

output: html_document
output: pdf_document
output: word_document
output: beamer_presentation (beamer slideshow - pdf)
output: ioslides_presentation (ioslides presentation - html)

Markdown is a simple formatting language that is easy to use

• Create lists with * or + sign
  • like this
  • and this
• Use one or two asterisk marks to provide emphasis such as *italics* and **bold**. Can even include tables:

Code blocks display with fixed-width font

#quick summary
library(ggplot2)
min(diamonds$price)

## [1] 326

mean(diamonds$price)

## [1] 3932.8

max(diamonds$price)

## [1] 18823

x <- sample(1:100, 5)
x

## [1] 90 94 19 49 48

• You can name the code chunk.

• echo = TRUE: The code will be displayed.

• eval = TRUE: Yes, execute the code.

You may want to use the same set of chunk options throughout a document and you don't want to retype those options in every chunk.

Global chunk options are for you!

• You can evaluate expressions inline by enclosing the expression within a single back-tick qualified with r.

Last night, I saw 7 shooting stars!

1. Run rmarkdown::render("<filepath>")
   
2. Click the knit HTML button at the top of the RStudio scripts pane

When you render, R will:

• Execute each embedded code chunk and insert the results into your report.

• Build a new version of your report in the output file type.

• Open a preview of the output file in the viewer pane.

• Save the output file in your working directory.