prismatic (version 1.1.2)

clr_desaturate: Make a color more desaturated

Description

Make a color more desaturated

Usage

clr_desaturate(col, shift = 0.5)

Value

a colors object of same length as col.

Arguments

col

a color object or vector of any of the three kinds of R color specifications, i.e., either a color name (as listed by colors()), a hexadecimal string of the form "#rrggbb" or "#rrggbbaa" (see rgb), or a positive integer i meaning palette()[i].

shift

Numeric between 0 and 1, 0 will do zero desaturation, 1 will do complete desaturation. Defaults to 0.5.

Details

The colors will be transformed to HSL color space (hue, saturation, lightness) where the saturation of the color will be modified. The saturation of a color takes a value between 0 and 1, with 0 being black and 1 being white. The shift argument takes a value between 0 and 1, where 0 means that the saturation stays unchanged and 1 means completely desaturated. As an example, if the saturation of the color is 0.6 and shift is 0.5, then the saturation be set to the halfway point between 0.6 and 0 which is 0.3.

See Also

clr_saturate

Examples

plot(clr_desaturate(terrain.colors(10), shift = 0.5))

plot(clr_desaturate(terrain.colors(10), shift = 0.9))

plot(clr_desaturate(rep("firebrick", 11), shift = seq(0, 1, 0.1)))