# phpman > man > ppmcolors(1)

[ppmcolors(1)](https://www.chedong.com/phpMan.php/man/ppmcolors/1/markdown)                           General Commands Manual                          [ppmcolors(1)](https://www.chedong.com/phpMan.php/man/ppmcolors/1/markdown)



## 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 in‐
       stead of one to designate an option.  You may use either white space or an  equals  sign  be‐
       tween 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  col‐
       ors.

       **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 im‐
       age, if you choose).

       **pgmramp** performs a similar function for PGM images.


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


## SEE ALSO
       [**pnmdepth**(1)](https://www.chedong.com/phpMan.php/man/pnmdepth/1/markdown), [**pnmcolormap**(1)](https://www.chedong.com/phpMan.php/man/pnmcolormap/1/markdown), [**ppmcie**(1)](https://www.chedong.com/phpMan.php/man/ppmcie/1/markdown), [**ppmrainbow**(1)](https://www.chedong.com/phpMan.php/man/ppmrainbow/1/markdown), [**pgmramp**(1)](https://www.chedong.com/phpMan.php/man/pgmramp/1/markdown), [**ppm**(5)](https://www.chedong.com/phpMan.php/man/ppm/5/markdown)


## AUTHOR
       By Bryan Henderson, December 2001.





                                          20 December 2001                              [ppmcolors(1)](https://www.chedong.com/phpMan.php/man/ppmcolors/1/markdown)