pal_vsup function

Variance suppressing uncertainty palette

Returns a palette function that turns v (value) and u (uncertainty) (both between 0 and 1) into colors.

pal_vsup(
  values,
  unc_levels = 4,
  max_light = 0.9,
  max_desat = 0,
  pow_light = 0.8,
  pow_desat = 1
)

Arguments

• values: Color values to be used at minimum uncertainty. Needs to be a vector of length 2^unc_levels.
• unc_levels: Number of discrete uncertainty levels. The number of discrete colors at each level doubles.
• max_light: Maximum amount of lightening
• max_desat: Maximum amount of desaturation
• pow_light: Power exponent of lightening
• pow_desat: Power exponent of desaturation

Returns

A function that takes two parameters, v (value) and u (uncertainty), both expected to be in the range of 0 to 1, and returns a color. This color is determined by the specified values colors at minimum uncertainty, and modified according to the given v and u parameters to represent uncertainty by adjusting lightness and saturation. The resulting function is useful for creating color palettes that can encode both value and uncertainty in visualizations.