Comparison of multiple weighted hierarchies: visual analytics for microbe community profiling

  • Authors:

  • K. Dinkla;M. A. Westenberg;H. M. Timmerman;S. A. F. T. van Hijum;J. J. van Wijk

  • Affiliations:

  • Eindhoven University of Technology, the Netherlands;Eindhoven University of Technology, the Netherlands;NIZO Food Research, Ede, the Netherlands;Centre for Molecular and Biomolecular Informatics, Radboud University Nijmegen Medical Centre and NIZO Food Research, Ede, and TI Food and Nutrition, Wageningen and Netherlands Bioinformatics Cent ...;Eindhoven University of Technology, the Netherlands

  • Venue:
  • EuroVis'11 Proceedings of the 13th Eurographics / IEEE - VGTC conference on Visualization
  • Year:
  • 2011

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Abstract

We propose visual analytics techniques to support concurrent comparison of hundreds of cumulatively weighted instances of a single hierarchy. This includes a node-link representation of the hierarchy where nodes depict the weights of all instances with high-density heat maps that are grouped and aligned to ease cross-referencing. Hierarchy exploration is facilitated by smoothly animated expansion and collapse of its branches. Detailed information about hierarchy structure, weights, and meta-data is provided by secondary linked visualizations. These techniques have been implemented in a prototype tool, in which the computational analysis concerns have been strictly separated from the visualization concerns. The analysis algorithms are extensible via a script engine. We discuss the effectiveness of our techniques for the visual analytic process of microbe community profiling experts.