Speaking of grid maps and abortion access, Jan Diehm and Michelle Pera-McGhee, for The Pudding, estimated a complexity score (with variables from the Guttmacher Institute) for each state and made mazes to match the scores. Mazes are organized as a state grid map initially, but you can also sort by complexity, alphabetically, or by region.
Visualize This: The FlowingData Guide to Design, Visualization, and Statistics (2nd Edition)
