R Markdown

markdown for formatted text

Paragraph is simply one or more consecutive lines of text, separated by one or more blank lines.

Header, setext are created by “underlining” with equal signs (=) and hyphens (-), respectively, atx are created by putting 1-6 hash marks (#) at the beginning of the line

Blockquote, created by “>”

Phrase emphasis, uses asterisks (* or **) and underscores (_ or __)to indicate spans of emphasis

bold

italics

List, use *, +, and - as list markers, nest list with four spaces

• Candy.
• Gum.

• Booze.

• Fruit
  • Apple
  • Orange
  • Banana

1. Red
2. Green
3. Blue

Links, inline with [](), and reference [][], []:

[Google](http://www.google.com)

[Google][1]

[1]: http://www.google.com

knitr for embedded R code

The knitr package extends the basic markdown syntax to include chunks of executable R code

• output display both code and results

dim(iris)

## [1] 150   5

• output display just the code

dim(iris)

• output display just the results

## [1] 150   5

• inline code

Two plus two equals 4

YAML for render parameters

You can use a YAML header to control how rmarkdown renders your .Rmd file. A YAML header is a section of key: value pairs surrounded by — marks

--- title: "Untitled" author: "Lin Chen" date: "Nov. 27, 2018" output: html_document ---

output: recognizes the following values

• html_document, which will create HTML output (default)
• pdf_document, which will create PDF output
• word_document, which will create Word output
• ioslides_presentation will create an ioslides (HTML5) slideshow
• beamer_presentation will create a beamer (PDF) slideshow

rmarkdown will convert your document into a slideshow by starting a new slide at each header or horizontal rule

Reference

1. Markdown Tutorial
2. Introduction to R Markdown