Garrett Grolemund

Garrett Grolemund

R expert

Franklin, Tennessee

Areas of Expertise:

  • R
  • Shiny
  • Data Science
  • Statistics
  • Visualization
Garrett maintains, the development center for the Shiny R package, and is the author of Hands-On Programming with R as well as R for Data Science, a forthcoming book by O'Reilly Media (watch him write it at Garrett is a Data Scientist and Professional Educator at RStudio, Inc. In his own words: I specialize in teaching people how to use R - and especially Hadley Wickham's R packages - to do insightful, reliable data science. Hadley was my dissertation advisor at Rice University, where I gained a first-hand understanding of his R libraries. While at Rice, I taught (and helped developed) the courses "Statistics 405: Introduction to Data Analysis," and "Visualization in R with ggplot2". Before that, I taught introductory statistics as a Teaching Fellow at Harvard University. I'm very passionate about helping people analyze data better. I have travelled as far as New Zealand, where R was born, to learn new ways to teach data science. I worked alongside some of the original developers of R to hone my programming skills, and I collaborated with the New Zealand government in a nationwide project to improve how New Zealand teaches data analysis to new statisticians. Back in the states, I focused my doctoral research on developing pragmatic principles that guide data science. These principles create a foundation for learning R, which is a bit of a layer cake. R is a set of tools for implementing statistical methods, and statistical methods are themselves a set of tools for learning from data. Like all toolkits, R gives its best results to those who use it wisely. Outside of teaching, I have spent time doing clinical trials research, legal research, and financial analysis. I also develop R software. I co-authored the `lubridate` R package, which provides methods to parse, manipulate, and do arithmetic with date-times, and I wrote the `ggsubplot` package, which extends `ggplot2`. I'm also the Editor-in-chief of RStudio's Shiny Development Center (, the official resource for learning to use the shiny package to make interactive web apps with R.

R for Data Science R for Data Science
by Garrett Grolemund, Hadley Wickman
December 2016
Print: $39.99
Ebook: $33.99

Hands-On Programming with R Hands-On Programming with R
by Garrett Grolemund
July 2014
Print: $39.99
Ebook: $31.99

Expert Data Wrangling with R Expert Data Wrangling with R
by Garrett Grolemund
February 2015
Video: $79.99

Introduction to Data Science with R Introduction to Data Science with R
by Garrett Grolemund
November 2014
Video: $159.99

Webcast: Easy, reproducible reports with R
August 26, 2015
The R Markdown package makes it very easy to generate reports straight from your R code. This webcast will cover applying the same report to multiple data sets.