Download (16MB) | Preview
Visualizing ﬂows between origins and destinations can be straightforward when dealing with small numbers of journeys or simple geographies. Representing ﬂows as lines embedded in geographic space has commonly been used to map transport ﬂows, especially when geographic patterns are important as they are when characterising cities or managing transportation. However, for larger numbers of ﬂows, this approach requires careful design to avoid problems of occlusion, salience bias and information overload. Driven by the requirements identiﬁed by users and managers of the London Bicycle Hire scheme we present three methods of representation of bicycle hire use and travel patterns. Flow maps with curved ﬂow symbols are used to show overviews in ﬂow structures. Gridded views of docking station location that preserve geographic relationships are used to explore docking station status over space and time in a graphically eﬃcient manner. Origin-Destination maps that visualise the OD matrix directly while maintaining geographic context are used to provide visual details on demand. We use these approaches to identify changes in travel behaviour over space and time, to aid station rebalancing and to provide a framework for incorporating travel modelling and simulation.
|Uncontrolled Keywords:||Visualization, bicycle, OD map, origin destination, treemap, ﬂow map|
|Subjects:||G Geography. Anthropology. Recreation > GA Mathematical geography. Cartography|
Z Bibliography. Library Science. Information Resources > Z665 Library Science. Information Science
|Divisions:||School of Informatics > Department of Information Science|
School of Informatics > giCentre
Actions (login required)