Theory of Graphical Perception

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December 05, 2015

Theory of Graphical Perception

視覺化分享會論文分享「Graphical Perception: Theory, Experimentation, and Application to the Development of Graphical Methods ( William S. Cleverland )」

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tkirby

December 05, 2015
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  1. Theory of Graphical Perception the “Visual Encoding” Kirby Wu

  2. Graphical Methods for Data Analysis and Presentation aka Data Visualization

    needs a scientific foundation
  3. “Every mature science has been able to identify its basic

    elements 
 and to explain its phenomena as the known interaction between these elements” Julesz, 1981 thus we can organise knowledge and predict behaviour
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  5. elementary perceptual tasks

  6. sample distribution function plot

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  14. Juxtaposed Cartesian Graphs

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  17. Position Position ( unaligned ) length / direction / angle

    area volume / curvature shading / saturation
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  19. unaligned > length Weber’s Law

  20. p = kab Stevens 1975, power law of theoretical psychophysics

    perceived magnitude actual magnitude Baird 1970 b = 1 b < 1 (b’) b < b’ length area volume
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  23. Redesign of Often-Used Charts

  24. Pie, Stack and Group Bar Chart

  25. Pie, Stack and Group Bar Chart

  26. Curve Difference Chart

  27. Curve Difference Chart

  28. Statistics Map 1. Area Bias 2. Grouping

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  32. Curve Difference Chart

  33. triple scatter plot vs framed rectangle graph area vs framed

    rect vs length
  34. elementary perceptual tasks