This is an analysis I carried out on the database of Tucson business licenses for the The New York Times Student Journalism Institute in 2015.
The original data sets are available on the city's webpage. The initial motivation for the analysis was to look at growth patterns in businesses in proximity to the City's new street car line.
A story written by Polo Rocha on that topic will be available soon, as well as a blog post with the methodology and process involved with the analysis.