extract all colors from a portable pixmap
see also :
add an example, a script, a trick and tips
no example yet ...
... Feel free to add your own example above to help other Linux-lovers !
exists only for backward compatibility.
pnmcolormap, which replaced it in January 2002.
difference between ppmtomap and pnmcolormap
all is that if the input is PBM or PGM, ppmtomap
would produce PPM output, whereas pnmcolormap all
produces the same kind of output as the input. This should
not be very noticeable, though, as PBM and PGM images are
usually usable anywhere a PPM image is.