A Multilevel Algorithm for Force-Directed Graph Drawing

  • C. Walshaw
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1984)


We describe a heuristic method for drawing graphs which uses a multilevel technique combined with a force-directed placement algorithm. The multilevel process groups vertices to form clusters, uses the clusters to define a new graph and is repeated until the graph size falls below some threshold. The coarsest graph is then given an initial layout and the layout is successively refined on all the graphs starting with the coarsest and ending with the original. In this way the multilevel algorithm both accelerates and gives a more global quality to the force- directed placement. The algorithm can compute both 2 & 3 dimensional layouts and we demonstrate it on a number of examples ranging from 500 to 225,000 vertices. It is also very fast and can compute a 2D layout of a sparse graph in around 30 seconds for a 10,000 vertex graph to around 10 minutes for the largest graph. This is an order of magnitude faster than recent implementations of force-directed placement algorithms.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • C. Walshaw
    • 1
  1. 1.School of Computing & Mathematical SciencesUniversity of GreenwichGreenwich, LondonUK

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