Intro

This notebook covers the data cleaning and analysis for the NPR series “Off The Mark”.

Data comes from the Historical Marker Database was launched by J.J. Prats in 2006. It includes over 180,000 active markers in the United States, contributed by thousands of hobbyists. Anyone who sees a marker can take a photo and submit it to the website. Entries are reviewed by editors to make sure that the marker is permanent, is located outdoors and has information beyond just names, dates and titles.

Use the sidebar to navigate the code notebook.

Stories that the data analysis appeared in are below:

• +digital
• +up_first_sunday
• +marking_hate_watc_radio
• +marking_the_frontier_radio
• +marking_a_murder_radio