vizvariabler
Vizvariabler, or visual variables, are perceptual properties of map symbols and graphic marks that can be varied to encode data values in maps, diagrams, and other geospatial visuals. The concept originated with the cartographer Jacques Bertin and has become foundational in cartography, GIS, and information visualization. Visual variables help designers translate abstract data into perceptually separable features while aiming for accurate reading and comparison.
Common vizvariabler include position, size, value (lightness), hue (color), saturation (color intensity), texture, shape, orientation, and
Data types guide how variables are used. Nominal data are often encoded with discrete hues, shapes, or
Design considerations include perceptual discriminability, accessibility (e.g., color vision deficiencies), and legibility in print and on