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On Rectangular Cartograms

  • Marc van Kreveld
  • Bettina Speckmann
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3221)

Abstract

A rectangular cartogram is a type of map where every region is a rectangle. The size of the rectangles is chosen such that their areas represent a geographic variable (e.g., population). Good rectangular cartograms are hard to generate: The area specifications for each rectangle may make it impossible to realize correct adjacencies between the regions and so hamper the intuitive understanding of the map.

Here we present the first algorithms for rectangular cartogram construction. Our algorithms depend on a precise formalization of region adjacencies and are building upon existing VLSI layout algorithms. Furthermore, we characterize a non-trivial class of rectangular subdivisions for which exact cartograms can be efficiently computed. An implementation of our algorithms and various tests show that in practice, visually pleasing rectangular cartograms with small cartographic error can be effectively generated.

Keywords

Planar Graph West Virginia Rectangular Partition Maximum Aspect Ratio Lower Average Error 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Marc van Kreveld
    • 1
  • Bettina Speckmann
    • 2
  1. 1.Inst. for Information & Computing SciencesUtrecht University 
  2. 2.Dep. of Mathematics & Computer ScienceTU Eindhoven 

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