How can I use latex packages in R markdown beamer?

Question

I want to include latex packages in R markdown pdf and beamer.

Could you help me in including usepackage command in rmarkdown beamer file?

Thanks a lot.

Answer 1

A simple solution would be to have your header setup like this:

---
title: "Document title"
author: "Author's name"
date: "Document date"
output: beamer_presentation
header-includes:
- \usepackage[brazil]{babel}
- \usepackage{graphicx}
- \usepackage[a4paper]{geometry}
---

Answer 2

The YAML header of the Rmd would look like:

---
title: "Habits"
output:
  pdf_document:
    includes:
      in_header: header.tex
---

Then, in the file header.tex, include any usepackage statements you need, eg. \usepackage{pdflscape}

See http://rmarkdown.rstudio.com/pdf_document_format.html for more information.