colorspace (version 1.4-0)

polarLUV: Create polarLUV (HCL) Colors

Description

This function creates colors of class ``polarLUV''; a subclass of the virtual color-class class.

Usage

polarLUV(L, C, H, names)

Arguments

L, C, H

these arguments give the L, C and H coordinates of the colors. The values can be provided in separate L, C and H vectors or in a three-column matrix passed as L.

names

A vector of names for the colors (by default the row names of L are used).

Value

An object of class polarLUV which inherits from class color.

Details

The polarLUV space is a transformation of the CIE $L^{\ast }{u}^{\ast }{u}^{\ast }$ space so that the $u$ and $u$ values are converted to polar coordinates. The radial component $C$ measures chroma and the angular coordinate $H$ is measures hue. It is also known as the HCL (hue-chroma-luminance) space.

See Also

RGB, HSV, XYZ, LAB, polarLAB, LUV, polarLUV.

Examples

# NOT RUN {
## Show the polarLUV space
set.seed(1)
x <- RGB(runif(1000), runif(1000), runif(1000))
y <- as(x, "polarLUV")
head(x)
head(y)
plot(y)
# }