scale-fill-viridis-b

Binned viridis fill scale.

Partitions the continuous domain into n-breaks equal segments, each coloured from the chosen viridis palette.

Usage

scale-fill-viridis-b(
  option,
  n-breaks,
  name,
  limits,
  oob,
  labels,
)

Parameters

Parameter	Default	Description
option		Palette name: "viridis", "magma", "plasma", "inferno", or "cividis".
n-breaks		Number of bins to partition the domain into.
name		Legend title. Overrides any name set via labs when both are present.
limits		Pair (lo, hi) clipping the trained domain, 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 the bins, or auto.

Returns

Scale object consumed by plot.

Examples

Default viridis ramp quantised into four bins for a banded fill.

#let d = range(0, 12).map(i => (grp: str(i), y: i + 1))
#plot(
  data: d,
  mapping: aes(x: "grp", y: "y", fill: "y"),
  layers: (geom-col(),),
  scales: (scale-fill-viridis-b(n-breaks: 4),),
  width: 10cm,
  height: 6cm,
)

The same ramp shown as a banded swatch via geom-rect.

#let d = range(0, 12).map(i => (
  xmin: i, xmax: i + 1, ymin: 0, ymax: 1, z: i,
))
#plot(
  data: d,
  mapping: aes(xmin: "xmin", xmax: "xmax", ymin: "ymin", ymax: "ymax", fill: "z"),
  layers: (geom-rect(),),
  scales: (scale-fill-viridis-b(option: "plasma", n-breaks: 6),),
  guides: guides(fill: none),
  theme: theme-void(),
  width: 8cm,
  height: 1cm,
)

See also

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