colorspace: color-class – R documentation

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color-class

Class "color"

Description

Objects from the class color represent colors in a number of color spaces. In particular, there are subclasses of color which correspond to RGB, HSV, HLS, CIEXYZ, CIELUV, CIELAB and polar versions of the last two spaces.

Objects from the Class

Objects can be created by calls to the functions RGB, sRGB, HSV, HLS, XYZ, LUV, LAB, polarLUV, and polarLAB. These are all subclasses of the virtual class color.

Slots

coords:: An object of class "matrix".

Methods

[: signature(x = "color"): This method makes it possible to take subsets of a vector of colors.
coerce: signature(from = "color", to = "RGB"): convert a color vector to RGB.
coerce: signature(from = "color", to = "sRGB"): convert a color vector to sRGB.
coerce: signature(from = "color", to = "XYZ"): convert a color vector to XYZ.
coerce: signature(from = "color", to = "LAB"): convert a color vector to LAB.
coerce: signature(from = "color", to = "polarLAB"): convert a color vector to polarLAB.
coerce: signature(from = "color", to = "HSV"): convert a color vector to HSV.
coerce: signature(from = "color", to = "HLS"): convert a color vector to HLS.
coerce: signature(from = "color", to = "LUV"): convert a color vector to LUV.
coerce: signature(from = "color", to = "polarLUV"): convert a color vector to polarLUV.
coords: signature(color = "color"): extract the color coordinates from a color vector.
plot: signature(x = "color"): plot a color vector
show: signature(object = "color"): show a color vector.

Author(s)

Ross Ihaka

Examples

x <- RGB(runif(1000), runif(1000), runif(1000))
plot(as(x, "LUV"))

colorspace

A Toolbox for Manipulating and Assessing Colors and Palettes

v2.0-1

BSD_3_clause + file LICENSE

Authors

Ross Ihaka [aut], Paul Murrell [aut] (<https://orcid.org/0000-0002-3224-8858>), Kurt Hornik [aut] (<https://orcid.org/0000-0003-4198-9911>), Jason C. Fisher [aut] (<https://orcid.org/0000-0001-9032-8912>), Reto Stauffer [aut] (<https://orcid.org/0000-0002-3798-5507>), Claus O. Wilke [aut] (<https://orcid.org/0000-0002-7470-9261>), Claire D. McWhite [aut] (<https://orcid.org/0000-0001-7346-3047>), Achim Zeileis [aut, cre] (<https://orcid.org/0000-0003-0918-3766>)

Initial release

2021-05-03