  Provides diverging colour scales from Paul Tol's Colour Schemes.

scale_colour_sunset(
...,
reverse = FALSE,
range = c(0, 1),
midpoint = 0,
discrete = FALSE,
aesthetics = "colour"
)

scale_color_sunset(
...,
reverse = FALSE,
range = c(0, 1),
midpoint = 0,
discrete = FALSE,
aesthetics = "colour"
)

scale_fill_sunset(
...,
reverse = FALSE,
range = c(0, 1),
midpoint = 0,
discrete = FALSE,
aesthetics = "fill"
)

scale_colour_BuRd(
...,
reverse = FALSE,
range = c(0, 1),
midpoint = 0,
discrete = FALSE,
aesthetics = "colour"
)

scale_color_BuRd(
...,
reverse = FALSE,
range = c(0, 1),
midpoint = 0,
discrete = FALSE,
aesthetics = "colour"
)

scale_fill_BuRd(
...,
reverse = FALSE,
range = c(0, 1),
midpoint = 0,
discrete = FALSE,
aesthetics = "fill"
)

scale_colour_PRGn(
...,
reverse = FALSE,
range = c(0, 1),
midpoint = 0,
discrete = FALSE,
aesthetics = "colour"
)

scale_color_PRGn(
...,
reverse = FALSE,
range = c(0, 1),
midpoint = 0,
discrete = FALSE,
aesthetics = "colour"
)

scale_fill_PRGn(
...,
reverse = FALSE,
range = c(0, 1),
midpoint = 0,
discrete = FALSE,
aesthetics = "fill"
)

## Arguments

...

Arguments passed to ggplot2::continuous_scale().

reverse

A logical scalar. Should the resulting vector of colors be reversed?

range

A length-two numeric vector specifying the fraction of the scheme's colour domain to keep.

midpoint

A length-one numeric vector giving the midpoint (in data value) of the diverging scale. Defaults to 0.

discrete

A logical scalar: should the colour scheme be used as a discrete scale? If TRUE, it is a departure from Paul Tol's recommendations and likely a very poor use of colour.

aesthetics

A character string or vector of character strings listing the name(s) of the aesthetic(s) that this scale works with.

## Value

A continuous scale.

## Details

If more colors than defined are needed from a given scheme, the colour coordinates are linearly interpolated to provide a continuous version of the scheme. Note that the default colour for NA can be overridden by passing a value to ggplot2::continuous_scale().

 Palette Max. colours NA value sunset 11 #FFFFFF BuRd 9 #FFEE99 PRGn 9 #FFEE99

Tol, P. (2018). Colour Schemes. SRON. Technical Note No. SRON/EPS/TN/09-002, issue 3.1. URL: https://personal.sron.nl/~pault/data/colourschemes.pdf