LUV.Rd
This function creates colors of class ``LUV''; a subclass of the virtual
colorclass
class.
LUV(L, U, V, names)
L, U, V  these arguments give the L, U and V coordinates of the colors.
The values can be provided in separate 

names  a vector of names for the colors (by default the row names of

An object of class LUV
which inherits from class color
.
The L
, U
and V
values give the coordinates of the
colors in the CIE (1976) \(L^*u^*v^*\) space. This is a
transformation of the 1931 CIE XYZ space which attempts to produce
perceptually based axes. Luminance takes values between 0 and 100, and the other coordinates
typically take values between 100 and 100, although these values can also
be exceeded by highly saturated colors. The \(u\) and \(v\)
coordinates measure positions on green/red and blue/yellow axes.
Ross Ihaka
## Show the LUV space set.seed(1) x < RGB(runif(1000), runif(1000), runif(1000)) y < as(x, "LUV") head(x)#> R G B #> [1,] 0.2655087 0.5308088 0.871805head(y)#> L U V #> [1,] 76.00763 25.7427 45.3886plot(y)