Function colors()
lists all the color names that are recognized by R. There is a nice PDF where one can actually see those colors.
colorRampPalette
creates a function that interpolate a set of given colors to create new color palettes. This output function takes n
(number) as input and produces a color vector of length n
interpolating the initial colors.
pal <- colorRampPalette(c('white','red'))
pal(5)
[1] "#FFFFFF" "#FFBFBF" "#FF7F7F" "#FF3F3F" "#FF0000"
Any specific color may be produced with an rgb()
function:
rgb(0,1,0)
produces green
color.