pnm
Updated: 03 October 2003
Table Of Contents
NAMEpnm ‐ Netpbm superformat
DESCRIPTION
This program is part of Netpbm.
The PNM format is just an abstraction of the PBM, PGM, and PPM
formats. I.e.
the name "PNM" refers collectively to PBM, PGM, and PPM.
The more general term "Netpbm format" refers to the PNM for‐
mats plus PAM.
Note that besides being names of formats, PBM, PGM, PPM, and
PNM are also
classes of programs. A PNM program can take PBM, PGM, or PPM
input. That’s
nothing special ‐‐ a PPM program can too. But a PNM program
can often
produce multiple output formats as well, and a PNM program can
see the
difference between PBM, PGM, and PPM input and respond to each
differently
whereas a PPM program sees everything as if it were PPM. This
is discussed
more in the description of the netpbm programs.
"pnm" also appears in the names of the most general Netpbm li‐
brary routines,
some of which aren’t even related to the PNM format.
SEE ALSO
ppm, pgm, pbm, pam, programs that process PNM, libnetpbm
AUTHOR
Copyright (C) 1989, 1991 by Jef Poskanzer.
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