Jeffrey Breen's Public Projects & Code

R Tutorial: Mining Twitter for consumer sentiment

All the code used to prepare and present my R tutorial on sentiment analysis. More information and slides are available on my blog.



Zipcode R package: U.S. zipcode database

This package contains the "CivicSpace US ZIP Code Database" by Schuyler Erle, August 2004 as a data.frame. It contains city and state name, latitude and longitude, and (possibly outdated) timezone information for over 98% of U.S. ZIP Codes as of 2004.

The source data is available in CSV format from and and has been released under the Creative Commons Share-Alike license.