NAME

       ppmtorgb3 - separate a portable pixmap into three portable graymaps

SYNOPSIS

       ppmtorgb3 [ppmfile]

DESCRIPTION

       Reads a portable pixmap as input.  Writes three portable graymaps as output, one each for red, green, and
       blue.

       The output filenames are constructed by taking the input  filename,  stripping  off  any  extension,  and
       appending  ".red",  ".grn",  and  ".blu".   For  example, separating lenna.ppm would result in lenna.red,
       lenna.grn, and lenna.blu.  If the input comes from stdin,  the  names  are  noname.red,  noname.grn,  and
       noname.blu.

SEE ALSO

       rgb3toppm(1), ppmtopgm(1), pgmtoppm(1), ppm(5), pgm(5)

AUTHOR

       Copyright (C) 1991 by Jef Poskanzer.

                                                 10 January 1991                                    ppmtorgb3(1)