This is the code for the first part of Introduction to Data Science book: Data Wrangling and Visualization with R.
The website for the second part is here.
This material is used in the HarvardX Data Science Series.
For updates follow <a class="twitter-follow-button" href="https://twitter.com/rafalab"> @rafalab
This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)