rgb                   package:base                   R Documentation

RGB Color Specification

Description:

     This function creates ``colors'' corresponding to the given
     intensities (between 0 and 1) of the red, green and blue
     primaries. The names argument may be used to provide names for the
     colors.

     The values returned by `rgb' can be used with a `col='
     specification in graphics functions or in `par'.

Usage:

     rgb(red, green, blue, names=NULL)

Arguments:

red, blue, green: vector in [0, 1].

   names: character. The names for the resulting vector.

See Also:

     `col2rgb' the ``inverse'' for translating R colors to RGB vectors.
     `rainbow', `hsv', `gray'.

Examples:

     rgb(0,1,0)
     u01 <- seq(0,1, length=11); all(rgb(u01,u01,u01) == gray(u01))
     reds <- rgb((0:15)/15, g=0,b=0, names=paste("red",0:15,sep="."))
     reds

