Improving Angular Resolution in Visualizations of Geographic Networks

  • Ulrik Brandes
  • Galina Shubina
  • Roberto Tamassia
Part of the Eurographics book series (EUROGRAPH)


In visualizations of large-scale transportation and communications networks, node coordinates are usually fixed to preserve the underlying geography, while links are represented as geodesics for simplicity. This often leads to severe readability problems due to poor angular resolution, i.e. small angles formed by lines converging in a node. We present a new method using automatically routed eubie curves that both preserves node coordinates and eliminates the resolution problem. The approach is applied to representations in the plane and on the sphere, showing European train connections and Internet traffic, respectively.


Planar Graph Angular Resolution Angular Difference Curve Edge Bezier Curve 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Ulrik Brandes
    • 1
  • Galina Shubina
    • 2
  • Roberto Tamassia
    • 2
  1. 1.Department of Computer and Information ScienceUniversity of KonstanzKonstanzGermany
  2. 2.Department of Computer ScienceBrown UniversityProvidenceUSA

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