Visual Variables. Characteristics of visual symbols How we distinguish between them. Slides by Sheelagh Carpendale, University of Calgary. Visual variables - attributes. position changes in the x, y (z) location size change in length, area or repetition shape
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Characteristics of visual symbols
How we distinguish between them
Slides by Sheelagh Carpendale, University of Calgary
is a change enough to allow us to select it from a group?
is a change enough to allow us to perceive them as a group?
is there a numerical reading obtainable from changes in this variable?
are changes in this variable perceived as ordered?
across how many changes in this variable are distinctions perceptible?