function Quick Reference.Rmd

---
title: "function Quick Reference"
author: "Mark Niemann-Ross"
output: html_document
---

```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
```

# About
## About This Document

This document provides brief explanations of the plotting functions available in Base R and the lattice package. It does not cover the [tidyverse or ggplot](https://rstudio.com/resources/cheatsheets/) - Rstudio does a great job of that without my help.

## Related Material
This Quick Reference is supplemental to courses on [LinkedIn Learning](https://www.linkedin.com/learning/r-for-data-science-lunchbreak-lessons/). A quick reference to [matrix math functions in R is here](http://niemannross.com/link/rmatrixqref). A quick reference to [clustering functions in R is here](http://niemannross.com/link/rclusterqref). An index to all R functions covered at LinkedIn Learning is found [here](http://niemannross.com/link/rindex). The latest version of this quick reference is found [here](http://niemannross.com/link/rplotqref). The source to this document is found on [github/mnr](https://github.com/mnr/R-for-Data-Science-Lunchbreak-Lessons). This document is available as Free Software under the terms of the [Free Software Foundation’s](http://www.gnu.org/) [GNU General Public License](https://www.r-project.org/COPYING).

## About Mark Niemann-Ross
[Mark](https://niemannross.com/) is an author for LinkedIn Learning and writes Science Fiction.

# Declare a function

# return()

# on.exit()

# nargs()

# args()

# formals()

# missing()

# invisible()

# debug()

# debugonce()

# undebug()

# isdebugged()

# debuggingState()

# debugcall()

# try