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Colin Ware s Information Visualization

Semiotics and perception. Symbols and their meaningsPicturesRealism vs. conventionWordsSensory vs. arbitrarySensoryno need to learn, rapidly processed, not culture-specificArbitraryhard to learn, easy to forget, culture-specific, can change quickly, but are formally powerful. Affordance theo

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Colin Ware s Information Visualization

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    1. Colin Ware’s Information Visualization Kathryn Summers 2003

    2. Semiotics and perception Symbols and their meanings Pictures Realism vs. convention Words Sensory vs. arbitrary Sensory—no need to learn, rapidly processed, not culture-specific Arbitrary—hard to learn, easy to forget, culture-specific, can change quickly, but are formally powerful

    3. Affordance theory Affordances—physical properties of the environment that invite/support action and that are directly perceived (Gibson 1986) Gibson assumed that perception is action-driven, that we primarily perceive possibilities for action (legacy of evolution) Cognitive model of affordances—the notion of “learned” (or socially constructed) affordances such as links or submit buttons

    4. Opponent process color theory Luminance is based on input from all three cones Red-green is based on the difference between long- and middle-wavelength cones Yellow-blue is based on the difference between short wave-length cones and the sum of the other two

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