Visualizing biodiversity with voronoi treemaps

Michael Horn*, Matthew Tobiasz, Chia Shen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

31 Scopus citations

Abstract

Introduced in 2005, the Voronoi treemap algorithm is an information visualization technique for displaying hierarchical data. Voronoi treemaps use weighted, centroidal Voronoi diagrams to create a nested tessellation of convex polygons. However, despite appealing qualities, few real world examples of Voronoi treemaps exist. In this paper, we present a multi-touch tabletop application called Involv that uses the Voronoi treemap algorithm to create an interactive visualization for the Encyclopedia of Life. Involv is the result of a yearlong iterative development process and includes over 1.2 million named species organized in a nine-level hierarchy. Working in the domain of life sciences, we have encountered the need to display supplemental hierarchical data to augment information in the treemap. Thus we propose an extension of the Voronoi treemap algorithm that employs force-directed graph drawing techniques both to guide the construction of the treemap and to overlay a supplemental hierarchy.

Original languageEnglish (US)
Title of host publication6th International Symposium on Voronoi Diagrams in Science and Engineering, ISVD 2009
Pages265-270
Number of pages6
DOIs
StatePublished - Dec 1 2009
Event6th International Symposium on Voronoi Diagrams in Science and Engineering, ISVD 2009 - Copenhagen, Denmark
Duration: Jun 23 2009Jun 26 2009

Publication series

Name6th International Symposium on Voronoi Diagrams in Science and Engineering, ISVD 2009

Other

Other6th International Symposium on Voronoi Diagrams in Science and Engineering, ISVD 2009
Country/TerritoryDenmark
CityCopenhagen
Period6/23/096/26/09

Keywords

  • Biodiversity
  • Information visualization
  • Interaction esign
  • Multi-touch tabletop displays
  • Voronoi treemaps

ASJC Scopus subject areas

  • Information Systems
  • Biomedical Engineering
  • Applied Mathematics

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