Dodeca-rings map: Interactively finding patterns and events in large geo-temporal data

Dodeca-Rings Map is the visual analytics system we designed to analyze geo-temporal traffic problems. The system is organized by three kinds of visualizations: dodecagons that show events on the map (Fig. 1 A & B), activity temporal charts (Fig. 1 C), and a social relationship matrix (Fig. 1D). We used it to solve the VAST 2014 Mini-Challenge 2 and then the Grand Challenge. The given data sets include two weeks of vehicle GPS tracking data, credit and loyalty card transaction data, as well as vehicle assignments data. The challenge requires us to describe common daily routines for the car drivers, identify unusual events, and address the uncertainties and conflicts inherent in this data.