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Green Image
Issue No. 06 - November/December (2006 vol. 12)
ISSN: 1077-2626
pp: 1461-1474
The research reported here integrates computational, visual and cartographic methods to develop a geovisual analytic approach for exploring and understanding spatio-temporal and multivariate patterns. The developed methodology and tools can help analysts investigate complex patterns across multivariate, spatial and temporal dimensions via clustering, sorting and visualization. Specifically, the approach involves a self-organizing map, a parallel coordinate plot, several forms of reorderable matrices (including several ordering methods), a geographic small multiple display and a 2-dimensional cartographic color design method. The coupling among these methods leverages their independent strengths and facilitates a visual exploration of patterns that are difficult to discover otherwise. The visualization system we developed supports overview of complex patterns and through a variety of interactions, enables users to focus on specific patterns and examine detailed views. We demonstrate the system with an application to the IEEE InfoVis 2005 contest data set, which contains time-varying, geographically referenced and multivariate data for technology companies in the US
Pattern analysis, Data visualization, Displays, Spatiotemporal phenomena, Humans, Geography, Sorting, Design methodology, Time varying systems, Companies,Information visualization, multivariate and spatio-temporal data, geovisualization, self-organizing map (SOM), visual analytics, ordering, small multiples.
"A Visualization System for Space-Time and Multivariate Patterns (VIS-STAMP)", IEEE Transactions on Visualization & Computer Graphics, vol. 12, no. , pp. 1461-1474, November/December 2006, doi:10.1109/TVCG.2006.84
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