On labeling in graph visualization

  • Authors:
  • Ugur Dogrusoz;Konstantinos G. Kakoulis;Brendan Madden;Ioannis G. Tollis

  • Affiliations:
  • Tom Sawyer Software, Oakland, CA, USA and Tom Sawyer Software, Oakland, CA, USA;National Organisation for Medicines, Cholargos, Greece;Tom Sawyer Software, Oakland, CA, USA;Computer Science Department, University of Crete, Greece and Institute of Computer Science, Hellas-FORTH, Crete, Greece

  • Venue:
  • Information Sciences: an International Journal
  • Year:
  • 2007

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Abstract

When visualizing graphs, it is essential to communicate the meaning of each graph object via text or graphical labels. Automatic placement of labels in a graph is an NP-Hard problem, for which efficient heuristic solutions have been recently developed. In this paper, we describe a general framework for modeling, drawing, editing, and automatic placement of labels respecting user constraints. In addition, we present the interface and the basic engine of the Graph Editor Toolkit - a family of portable graph visualization libraries designed for integration into graphical user interface application programs. This toolkit produces a high quality automated placement of labels in a graph using our framework. A brief survey of automatic label placement algorithms is also presented. Finally we describe extensions to certain existing automatic label placement algorithms, allowing their integration into this visualization tool.