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Maptitude® On-Line Training

Introductory Maptitude: Lesson 3

Themes & Legends

3.6 Methods for Color and Pattern Themes
  • Equal number of features (e.g., quartiles)
  • Equal size intervals (e.g., 0-25, 26-50, 51-75, 76-100)
  • Equal feature area/length
  • List of values (only choice for character fields)
  • Standard deviation
  • Nested averages
  • Manual (use Manual button)

Equal feature area has about the same total size of area features in each class. Equal feature length has about the same total length of line features in each class.

Nested averages for two classes splits them based on the average value. For four classes, each of those classes are split in two based on the average value for features in the class, and so on.