scale-fill-continuous

Continuous fill scale mapping a numeric column to fill colours.

Usage

scale-fill-continuous(
  name,
  palette,
  limits,
  oob,
  breaks,
  labels,
)

Parameters

Parameter	Default	Description
name		Legend title. Overrides any name set via labels when both are present.
palette		Colour source: a gradient, an array of colours, or auto.
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.
breaks		Array of break values for the legend, or auto.
labels		Array of legend labels aligned with breaks, or auto.

Returns

Scale object consumed by plot.

Examples

Default ramp filling bars by their numeric value.

#let d = (
  (grp: "a", y: 1),
  (grp: "b", y: 2),
  (grp: "c", y: 3),
)
#plot(
  data: d,
  mapping: aes(x: "grp", y: "y", fill: "y"),
  layers: (geom-col(),),
  scales: (scale-fill-continuous(),),
  width: 10cm,
  height: 6cm,
)

The default ramp shown as a continuous swatch via geom-rect over a sampled gradient.

#let d = range(0, 16).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-continuous(),),
  guides: guides(fill: none),
  theme: theme-void(),
  width: 10cm,
  height: 1cm,
)

See also

scale-fill-viridis-c, scale-fill-discrete, scale-colour-continuous.