| LAB {colorspace} | R Documentation |
This function creates colors of class “LAB”; a subclass of the virtual “color” class.
LAB(L, A, B, names)
L,A,B |
these arguments give the L, A and B 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 |
The L, A and B values give the coordinates of
the colors in the CIE L*a*b* 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
take values between -100 and 100. The a and b coordinates
measure positions on green/red and blue/yellow axes.
An object of class “LAB” which inherits from class “color.”
Ross Ihaka
RGB,
HSV,
XYZ,
LAB,
polarLAB,
LUV,
polarLUV.
## Show the LAB space x = RGB(runif(1000), runif(1000), runif(1000)) plot(as(x,"LAB"))