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
       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.