Mixed Upward Planarization – Fast and Robust

  • Martin Siebenhaller
  • Michael Kaufmann
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3843)

Abstract

In a mixed upward drawing of a graph G = (V,E) all directed edges ED ⊆ E are represented by monotonically increasing curves. Mixed upward drawings arise in applications like UML diagrams where such edges denote a hierarchical structure. The mixed upward planarization is an important subtask for computing such drawings. We outline a fast and simple heuristic approach that provides a good quality and can be applied to larger graphs as before in reasonable time. Unlike other Sugiyama-style [4] approaches, the quality is comparable to the GT based approach [2] even if there are only few directed edges. Furthermore, the new approach is particularly suitable for extensions like clustering and swimlanes.

References

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Martin Siebenhaller
    • 1
  • Michael Kaufmann
    • 1
  1. 1.Universität Tübingen, WSITübingenGermany

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