pbmrot90 man page on DragonFly

pbmrot90 man page on DragonFly

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PBMROT90(1l)							  PBMROT90(1l)

NAME
       pbmrot90 - rotates a PBM-P4-file by 90 degree

SYNOPSIS
       pbmrot90 infile outfile

DESCRIPTION
       Pbmrot90	 reads	a PBM file in P4 format and produces a new PBM file in
       P4 format.  The output is rotated by 90 degree.	This tool can be  used
       to  modify  the	image produced as export output of the VCG tool from a
       graph before printing it on paper.  In this way, portrait format can be
       converted into landscape format.

WARNING
       This utility does not work with the PBM-P1-format !!!  It is not a gen‐
       eral conversion utility but only a small demonstation how to deal  with
       the output of the VCG tool.  There are excellent standard utilities for
       PBM-Files by Jef Poskanzer (pnmflip, pnmshift) but pbmrot90  should  be
       much faster on large files.

SEE ALSO
       vcg(l) pnmrotate(l) pnmflip(l) pbmshift(l) pbm2hp(l)

BUGS
       Currently, no bugs are known.

ACKNOWLEDGEMENT
       Jef  Poskanzer is the initiator and main implementor of the PBM package
       that contains various image processing routines and printer drivers.

AUTHOR
       Georg Sander, University of Saarland.

Release 1.3			  1995/01/05			  PBMROT90(1l)

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