Preface For this post, I’m going to assume you are fairly familiar with RMarkdown. If not, you may want to start with RMarkdown: The Definitive Guide, or R for Data Science. The short version is that RMarkdown is a flavor of the markup language Markdown, which uses plain-text formatting and can be rendered into a variety of output types, including PDF, MS Word, HTML, and others. With RMarkdown, you can incorporate R “code chunks” to create a fully reproducible document.