Hi, I'm Ari Lamstein.  

I help people do great things with R.

What would you like help with?


I've written several R packages that deal with the mapping demographic datasets. 

Collectively this work is called "choroplethr". Click below to learn more.


Looking for in-depth courses to help you improve your technical skills?‚Äč

My highly-rated courses let you study niche topics, in depth, at your own pace.

Corporate Services

Need help migrating a team of analysts from tools such as Excel to R?  I've helped organizations like yours in the past.

Learn how I can help your team.

Learn to Map Census Data in R!

This free course has helped thousands of people learn to map demographic data in R.
The course contains 5 lessons and will teach you how to make this map:

About Ari

You might know me as the author of choroplethr, the popular R package for mapping open datasets. My work on choroplethr has led to the creation of two full-length courses.

I am an RStudio Certified Trainer and provide R Training and Consulting to corporations and government agencies.

If you would like to explore working together, then please contact me.