If you haven’t heard of LaTeX before (or tried it but failed to make it work for you), don’t fret. It is required for knitr to create professionally (or at least, academically) looking reports. MacTeX is a so-called LaTeX distribution (pronounced lah-tech or lay-tech). You should start by installing MacTeX (pronounced mac-tech). I have tested that this works exactly the same by first installing R and RStudio and then finally installing MacTeX on a clean installation of macOS.
You can just skip the parts explaining how to install R and RStudio. In case you are already experienced with R but are not using LaTeX, chances are you already have R and RStudio installed but do not have MacTeX. This guide assumes you have neither R, RStudio nor MacTeX installed before beginning the tutorial. Having installed R and RStudio before installing MacTeX? If you are running as a standard user, you may have varying degrees of success. I ran this tutorial as the default user that was created during installation of macOS. In other words, everything you need is explained in this tutorial.
When writing this tutorial I used a new and 100% clean installation of macOS- no software was installed in advance and no changes had been made to the settings of the computer (except changing the color of the desktop). If you are running an older version of macOS you should still be able to follow along, provided you are running at least OS X El Capitan. This tutorial assumes you are running macOS High Sierra. (If you’re not familar with R, I’m not quite sure why you’re reading, but of course, you’re very welcome to read along!) Requirements If you are familiar with R and not with Markdown, follow me here on Medium or on Twitter to get notified when I post a tutorial on that. Howevever, if you are familiar with R and Markdown, that should not be a problem once you have seen an example R Markdown file (which you will as part of his tutorial). It doesn’t teach you the syntax of R Markdown. This tutorial teaches you how to install everything you need on a Mac running macOS High Sierra, as well as how to create R Markdown files and compile them into PDF files.
An R Markdown file is basically a standard Markdown file with embedded R code chunks. If you’re using R to statistically explore data sets, and you need to write reports detailing your findings, you can benefit from using R Markdown. If you are a Windows user, see my original post. NOTE: This post builds on a post I wrote on installing RStudio on Windows a couple of years ago.
It also guides you through creating your first R Markdown file and shows how to compile it into a PDF file using knitr. TLDR: This tutorial teaches you how to install LaTeX, R and R Markdown on macOS High Sierra. Create PDF reports using R, R Markdown, LaTeX and knitr (on macOS High Sierra)
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