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3D Edge Bundling for Geographical Data Visualization

A. Lambert, R. Bourqui, D. Auber
LaBRI, INRIA Bordeaux Sud-Ouest, Bordeaux, France
14th International Conference Information Visualisation (IV), 2010

@inproceedings{lambert20103d,

   title={3D edge bundling for geographical data visualization},

   author={Lambert, A. and Bourqui, R. and Auber, D.},

   booktitle={2010 14th International Conference Information Visualisation},

   pages={329–335},

   year={2010},

   organization={IEEE}

}

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Visualization of graphs containing many nodes and edges efficiently is quite challenging since representations generally suffer from visual clutter induced by the large amount of edge crossings and node-edge overlaps. That problem becomes even more important when nodes positions are fixed, such as in geography were nodes positions are set according to geographical coordinates. Edge bundling techniques can help to solve this issue by visually merging edges along common routes but it can also help to reveal high-level edge patterns in the network and therefore to understand its overall organization. In this paper, we present a generalization of [18] to reduce the clutter in a 3D representation by routing edges into bundles as well as a GPU-based rendering method to emphasize bundles densities while preserving edge color. To visualize geographical networks in the context of the globe, we also provide a new technique allowing to bundle edges around and not across it.
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