Viz - Visual Primitive Ranking over decoding

About

Cleveland and McGill studied what people are able to decode most accurately and defined and ranked visual primitives in the following list.

  1. Position along a common scale e.g. scatter plot
  2. Position on identical but nonaligned scales e.g. multiple scatter plots
  3. Length e.g. bar chart
  4. Angle & Slope (tie) e.g. pie chart
  5. Area e.g. bubbles
  6. Volume, density, and color saturation (tie) e.g. heatmap
  7. Color hue e.g. newsmap

The ordering does not result in a precise prescription for displaying data but rather is a framework within which to work.


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