palette              package:grDevices              R Documentation

Set or View the Graphics Palette

Description:

     View or manipulate the color palette which is used when a 'col='
     has a numeric index.

Usage:

     palette(value)

Arguments:

   value: an optional character vector.

Details:

     If 'value' has length 1, it is taken to be the name of a built in
     color palette.  If 'value' has length greater than 1 it is assumed
     to contain a description of the colors which are to make up the
     new palette (either by name or by RGB levels).

     If 'value' is omitted or has length 0, no change is made the
     current palette.

     Currently, the only built-in palette is '"default"'.

Value:

     The palette which _was_ in effect.  This is 'invisible' unless the
     argument is omitted.

See Also:

     'colors' for the vector of built-in named colors; 'hsv', 'gray',
     'rainbow', 'terrain.colors',... to construct colors.

     'colorRamp' to interpolate colors, making custom palettes;
     'col2rgb' for translating colors to RGB 3-vectors.

Examples:

     require(graphics)

     palette()               # obtain the current palette
     palette(rainbow(6))     # six color rainbow

     (palette(gray(seq(0,.9,len=25)))) # gray scales; print old palette
     matplot(outer(1:100,1:30), type='l', lty=1,lwd=2, col=1:30,
             main = "Gray Scales Palette",
             sub = "palette(gray(seq(0,.9,len=25)))")
     palette("default")      # reset back to the default

