color variable

A color variable is a visual variable that defines the color of a symbol based on a numeric data value returned from a field or expression. If an expression is used, the color can be defined from a color ramp with a set of pre-defined color ranges. Numeric data should be normalized before visualizing it with color, especially for polygon layers.

Color visual variables require the following:

  1. A reference to a data value either from a field name, or an Arcade expression.
  2. At least two color stops that match data values to colors. The colors of symbols with data values between the designated stops are interpolated linearly.

Also known as

  • Color visual variable

Related terms

  • Opacity variable
  • Rotation variable
  • Size variable

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