NAME

       ppmcolors - generate a color map of all colors of a certain maxval

SYNOPSIS

       ppmcolors [-maxval=maxval]

       All  options  can be abbreviated to their shortest unique prefix.  You may use two hyphens instead of one
       to designate an option.  You may use either white space or an equals sign between an option name and  its
       value.

DESCRIPTION

       ppmcolors generates a PPM color map containing all the colors representable with a certain maxval.

       A PPM color map is a regular PPM image that is used by some programs to define a set of colors.

       ppmcolors generates a one row PPM image that contains one pixel of each color representable by the maxval
       you choose.  The maxval of the PPM image is that maxval.  Note that you can  change  the  maxval  of  the
       color  map  by running the output of ppmcolors through pnmdepth.  As long as the new maxval is a multiple
       of the original, the resulting set of colors will be identical.  If the new maxval is not a multiple, the
       resulting set of colors will be slightly different.

       When you select a maxval of 5 (which is the default), you get a color map of the set of "web safe" colors
       as defined by Netscape.  Most web browsers guarantee that they can produce at least these 216 colors (215
       plus black).

       pnmcolormap is another program to generate a color map.  It chooses a set of colors designed to represent
       the colors in a specified image (or simply the set of all the colors in that image, if you choose).

       pgmramp performs a similar function for PGM images.

OPTIONS

       -maxval=maxval
              This is the maxval of the generated color map.  Default is 5.

SEE ALSO

       pnmdepth(1), pnmcolormap(1), ppmcie(1), ppmrainbow(1), pgmramp(1), ppm(5)

AUTHOR

       By Bryan Henderson, December 2001.

                                                20 December 2001                                    ppmcolors(1)