scale-colour-viridis-d

Discrete viridis colour scale.

option selects between "viridis", "magma", "plasma", "inferno", and "cividis".

Usage

scale-colour-viridis-d(
  option,
  name,
  limits,
  oob,
  labels,
)

Parameters

Parameter	Default	Description
option		Palette name: "viridis", "magma", "plasma", "inferno", or "cividis".
name		Legend title. Overrides any name set via labels when both are present.
limits		Array of level names controlling order and inclusion, or none.
oob		Out-of-range policy: "drop" (default) removes rows whose value falls outside limits; "squish" clamps continuous values to the nearest endpoint.
labels		Array of legend labels aligned with limits, or auto.

Returns

Scale object consumed by plot.

Examples

Plasma option of the viridis family applied to four categories.

#let d = (
  (x: 1, y: 2, sp: "a"),
  (x: 2, y: 4, sp: "b"),
  (x: 3, y: 3, sp: "c"),
  (x: 4, y: 5, sp: "d"),
)
#plot(
  data: d,
  mapping: aes(x: "x", y: "y", colour: "sp"),
  layers: (geom-point(size: 3pt),),
  scales: (scale-colour-viridis-d(option: "plasma"),),
  width: 10cm,
  height: 6cm,
)

Switching option to "cividis" selects the colour-blind safe alternative.

#let d = (
  (x: 1, y: 2, sp: "a"),
  (x: 2, y: 4, sp: "b"),
  (x: 3, y: 3, sp: "c"),
  (x: 4, y: 5, sp: "d"),
)
#plot(
  data: d,
  mapping: aes(x: "x", y: "y", colour: "sp"),
  layers: (geom-point(size: 3pt),),
  scales: (scale-colour-viridis-d(option: "cividis"),),
  width: 10cm,
  height: 6cm,
)

See also

scale-colour-viridis-c, scale-colour-viridis-b, scale-fill-viridis-d.