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RedHat 9 (Linux i386) - man page for ppmcolors (redhat section 1)

ppmcolors(1)			     General Commands Manual			     ppmcolors(1)

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

       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.

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

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

       ppmcolors  generates  a	one  row  PPM  image that contains one pixel of each color repre-
       sentable 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 col-
       ors 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 pro-
       duce 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.

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

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

       By Bryan Henderson, December 2001.

       Contributed to the public domain.

					 20 December 2001			     ppmcolors(1)

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