View size and pointing difficulty in multi-scale navigation

  • Authors:
  • Yves Guiard;Michel Beaudouin-Lafon;Julien Bastin;Dennis Pasveer;Shumin Zhai

  • Affiliations:
  • LMP CNRS & Univ. Mééditerranée, Marseille, France;Université Paris-Sud, Orsay, France;LMP CNRS & Univ. Mééditerranée, Marseille, France;Université Paris-Sud, Orsay, France;IBM Almaden Research Center, San Jose, CA

  • Venue:
  • Proceedings of the working conference on Advanced visual interfaces
  • Year:
  • 2004

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Abstract

Using a new taxonomy of pointing tasks which includes view pointing beside traditional cursor pointing, we introduce the concept of multi-scale pointing. Analyzing the impact of view size, we demonstrate theoretically and experimentally that (1) the time needed to reach a remotely located target in a multi-scale interface still obeys Fitts' law and (2) the bandwidth of the interaction (i.e., the inverse of Fitts' law slope) is proportional to view size, a relationship bounded by an early ceiling effect. We discuss these results with special reference to navigation in miniaturized and enlarged interfaces.