# ppmtorgb3

Updated: 10 January 1991
Index

## 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, ppmtopgm, pgmtoppm, ppm, pgm

## AUTHOR

Copyright (C) 1991 by Jef Poskanzer.

## Index

NAME
SYNOPSIS
DESCRIPTION
SEE ALSO
AUTHOR