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Viridis and ColorBrewer scales

Source: R/scales.R
scale_viridis.Rd

Named convenience constructors for popular palettes, easing migration from ggplot2. They are thin wrappers over the palette = argument of scale_color_continuous() / scale_color_discrete() (any grDevices::hcl.colors() name works there directly).

Usage

scale_color_viridis_c(
  plot,
  option = "viridis",
  breaks = NULL,
  labels = NULL,
  name = NULL
)

scale_color_viridis_d(
  plot,
  option = "viridis",
  breaks = NULL,
  labels = NULL,
  name = NULL
)

scale_fill_viridis_c(
  plot,
  option = "viridis",
  breaks = NULL,
  labels = NULL,
  name = NULL
)

scale_fill_viridis_d(
  plot,
  option = "viridis",
  breaks = NULL,
  labels = NULL,
  name = NULL
)

scale_color_brewer(
  plot,
  palette = "Blues",
  breaks = NULL,
  labels = NULL,
  name = NULL
)

scale_fill_brewer(
  plot,
  palette = "Blues",
  breaks = NULL,
  labels = NULL,
  name = NULL
)

scale_color_distiller(
  plot,
  palette = "Blues",
  breaks = NULL,
  labels = NULL,
  name = NULL
)

scale_fill_distiller(
  plot,
  palette = "Blues",
  breaks = NULL,
  labels = NULL,
  name = NULL
)

scale_colour_viridis_c(
  plot,
  option = "viridis",
  breaks = NULL,
  labels = NULL,
  name = NULL
)

scale_colour_viridis_d(
  plot,
  option = "viridis",
  breaks = NULL,
  labels = NULL,
  name = NULL
)

scale_colour_brewer(
  plot,
  palette = "Blues",
  breaks = NULL,
  labels = NULL,
  name = NULL
)

scale_colour_distiller(
  plot,
  palette = "Blues",
  breaks = NULL,
  labels = NULL,
  name = NULL
)

Arguments

plot

A PlotSpec.

option

Which viridis map (see above).

name, breaks, labels

As for scale_color_continuous().

palette

A grDevices::hcl.colors() palette name.

Value

The modified PlotSpec.

Details

  • scale_*_viridis_c() / scale_*_viridis_d() — the perceptually-uniform, colour-vision-deficient-safe viridis maps, continuous (_c) or discrete (_d). option picks the map: "viridis", "plasma", "inferno", "cividis", "rocket", or "mako" (unknown options fall back to viridis).

  • scale_*_brewer() — a discrete ColorBrewer-style qualitative/sequential palette; scale_*_distiller() — the same ramp interpolated for continuous data. palette is any hcl.colors() name (e.g. "Blues", "Set 2").

See also

scale_color_continuous()

Examples

vplot(mtcars) |> mark_point(x = wt, y = mpg, color = hp) |> scale_color_viridis_c()

vplot(mtcars) |>
  mark_point(x = wt, y = mpg, color = factor(cyl)) |>
  scale_color_brewer(palette = "Set 2")