In this project, we propose OD-Wheel, a novel visual design and associated analysis tool, to explore OD patterns. Once users define a region, all taxi trips starting from or ending to that region are selected and grouped into OD clusters. With a hybrid circular-linear visual design, OD-Wheel allows users to explore the dynamic patterns of each OD cluster, including the variation of traffic flow volume and travel time. The proposed tool supports convenient interactions and allows users to compare and correlate the patterns between different OD clusters. With real taxi GPS trajectories, we present a use study to demonstrate the effectiveness of OD-Wheel.
Min Lu, Jie Liang, Zuchao Wang and Xiaoru Yuan.
Exploring OD Patterns of Interested Region based on Taxi Trajectories
Journal of Visualization, 2016, 1-11
Min Lu, Zuchao Wang, Jie Liang and Xiaoru Yuan.
OD-Wheel: Visual Design to Explore OD Patterns of a Central Region.
In Proceedings of IEEE Pacific Visualization Symposium (PacificVis'15), (Notes Paper), Hang Zhou, April 14-17, 2015.
Pipeline of OD-Wheel system
Travel Time Exploration of the region around Beijing Railway Station: (a) the top five O and D clusters; (b) selecting the blue region in dotted box, trajectories travelling are shown; (c, d) travel routes with normal travel time and abnormal travel time are plotted respectively.