Lighten/darken a colour/fill aesthetic

Lighten/darken a colour/fill aesthetic based on a

• aes_colour_darken() Darken a colour aesthetic, relative to a fill aesthetic

• aes_colour_lighten() Lighten a colour aesthetic, relative to the fill aesthetic

• aes_fill_darken() Darken a fill aesthetic, relative to a colour aesthetic

• aes_fill_lighten() Lighten a fill aesthetic, relative to the colour aesthetic Can be spliced into ggplot2::aes with rlang::!!!.

Usage

aes_colour_darken(..., amount = 0.1)

aes_colour_lighten(..., amount = 0.1)

aes_fill_darken(..., amount = 0.1)

aes_fill_lighten(..., amount = 0.1)

Arguments

...

Other arguments passed to colorspace::darken()/colorspace::lighten().

amount

Numeric specifying the amount of lightening or darkening.

Value

A ggplot2 aesthetic

Examples

library(ggblanket)
library(ggplot2)
library(palmerpenguins)

set_blanket(
  alpha_recursive = 1,
)

penguins |>
  gg_bar(
    y = species,
    col = island,
    mapping = aes_colour_darken(amount = 0.2),
    width = 0.75,
  )
#> Warning: Ignoring unknown parameters: `outlier.alpha`
#> Warning: Ignoring unknown parameters: `outlier.alpha`
#> Scale for colour is already present.
#> Adding another scale for colour, which will replace the existing scale.


penguins |>
gg_bar(
  y = species,
  col = island,
  mapping = aes(!!!aes_colour_darken(amount = 0.2)),
  width = 0.75,
)
#> Warning: Ignoring unknown parameters: `outlier.alpha`
#> Warning: Ignoring unknown parameters: `outlier.alpha`
#> Scale for colour is already present.
#> Adding another scale for colour, which will replace the existing scale.