I3D '11 Symposium on Interactive 3D Graphics and Games
Alleviating the modifiable areal unit problem within probe-based geospatial analyses
EuroVis'10 Proceedings of the 12th Eurographics / IEEE - VGTC conference on Visualization
TrajectoryLenses - a set-based filtering and exploration technique for long-term trajectory data
EuroVis '13 Proceedings of the 15th Eurographics Conference on Visualization
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Traditional geospatial information visualizations often present views that restrict the user to a single perspective.When zoomed out, local trends and anomalies become suppressed and lost; when zoomed in for local inspection, spatial awareness and comparison between regions become limited.In our model, coordinated visualizations are integrated within individual probe interfaces, which depict the local data in user-defined regions-of-interest.Our probe concept can be incorporated into a variety of geospatial visualizations to empower users with the ability to observe, coordinate, and compare data across multiple local regions.It is especially useful when dealing with complex simulations or analyses where behavior in various localities differs from other localities and from the system as a whole.We illustrate the effectiveness of our technique over traditional interfaces by incorporating it within three existing geospatial visualization systems: an agent-based social simulation, a census data exploration tool, and an 3D GIS environment for analyzing urban change over time.In each case, the probe-based interaction enhances spatial awareness, improves inspection and comparison capabilities, expands the range of scopes, and facilitates collaboration among multiple users.