Journal
JOURNAL OF VISUALIZATION
Volume 18, Issue 2, Pages 185-200Publisher
SPRINGER
DOI: 10.1007/s12650-015-0278-x
Keywords
Human movement patterns; Taxi O/D data; Visual analytics; Spatio-temporal visualization
Categories
Funding
- China-Europe International Cooperation Project - Ministry of Science and Technology
- Zhejiang Provincial Natural Science Funds for Distinguished Young Scientist [R14F020005]
- Qianjiang Talents Project in Zhejiang Province [2013R10054]
- Zhejiang Provincial Technology Application Project for Public Welfare [2014C3307]
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It is very useful to understand metropolitan human movement patterns for better city planning and traffic management. As the most accessible and wide-coverage data source for probing the laws behind city pulse and human movement, taxi O/D data have been receiving more and more attention from road traffic administration offices. In this paper, we design a visual analysis system for big taxis O/D data for assisting understanding the spatio-temporal patterns of human mobility. The system first helps users determine the regions of interest for further investigation by the global heat map view of O/D distributions; visually encodes the spatio-temporal patterns of the O/D data of the to-be-analyzed regions chosen by lasso or rectangle region selection tools; and provides a multi-dimensidoneonal analysis of the latent spatio-temporal patterns of taxis O/D data through interactions between multiple coordinated views of visualizations including circular pixel graph, spatio-temporal stacked graph and nested pixel bar. The proposed system of taxis O/D data visual analysis gets interesting findings about the metropolitan residents' movement behavior when applied to large-scale real taxis GPS data in Hangzhou and receives good user feedbacks.
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