ppmtorgb3(1)

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 non-
       ame.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)