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 )」

Transcript

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
5. elementary perceptual tasks
6. sample distribution function plot
14. Juxtaposed Cartesian Graphs
17. Position Position ( unaligned ) length / direction / angle area volume / curvature shading / saturation
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
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
32. Curve Difference Chart
33. triple scatter plot vs framed rectangle graph area vs framed rect vs length
34. elementary perceptual tasks