R. Rao and S. K. Card Present by Tao Zhan

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The Table Lens: Merging Graphical and Symbolic Representations in an Interactive Focus + Context Visualization for Tabular Information. R. Rao and S. K. Card Present by Tao Zhan. Focus + Context (Fisheye). Motivation
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The Table Lens: Merging Graphical and Symbolic Representations in an Interactive Focus + Context Visualization for Tabular InformationR. Rao and S. K. CardPresent by Tao ZhanFocus + Context (Fisheye)
  • Motivation
  • a view of the whole data available, while pursuing detail analysis of a part of it
  • Problems in overview + detail: visual search and working memory consequences degrade performance
  • user’s interest in detail fall away from the object of attention in a systematic way
  • Focus + Context (Continue)
  • Basic Idea
  • detail information and relevant context overview are combined within a single (dynamic) display
  • DOI: a metric that is the sum of a priori measure of importance and distance from the point of interest
  • method of reduction of information for the peripheral, contextual area
  • Focus + Context (Continue)
  • Key factors
  • zoom factor
  • focus/context space ratio
  • whether the zoom factor is a step function or continuous function
  • whether the fisheye effect is obtained by geometrical distortion, elision, or semantic scaling
  • Table Lens
  • Motivated by the particular nature of tables
  • Distort table without bending any rows or columns
  • Distortion in each of the two dimensions is independent from the other
  • GH456Distortion Function Framework
  • Each dimension has a block pulse DOI
  • Mapping from uniformly distributed cell to physical location
  • Multiple focal areas and Multiple focal levels are possible
  • Interactive Manipulation of Focus
  • Zoom
  • Adjust
  • Slide
  • Combined
  • Graphical Mapping Scheme
  • Value
  • Value Type
  • Region Type
  • Cell Size
  • User Choice
  • Spotlighting
  • Examples & Conclusion
  • Examples
  • Strength and Advantage
  • supports effective interaction with much larger tables than conventional one (68,400 V.S. 660)
  • graphical representations make it easy to view patterns for cell value
  • Suitable for large dimensional data and reveal correlation and patterns between them
  • Critique
  • Zoom Factor may be too big
  • Nominal variables with large domain are hard to present graphically
  • Search is not trivial in Table Lens
  • Favorite Sentence
  • Always take flight to where there is a free view over the whole single great problem, even if this view is still not a clear one.
  • Related Search
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