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1995-02-13
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pnmflip(1) PBM Plus pnmflip(1)
NAME
pnmflip - perform one or more flip operations on a portable
anymap
SYNOPSIS
pnmflip [-leftright|-lr] [-topbottom|-tb] [-transpose|-xy]
[-rotate90|-r90|-ccw] [-rotate270|-r270|-cw]
[-rotate180|-r180] [pnmfile]
DESCRIPTION
Reads a portable anymap as input. Performs one or more flip
operations, in the order specified, and writes out a port-
able anymap.
The flip operations available are: left for right (-
leftright or -lr); top for bottom (-topbottom or -tb); and
transposition (-transpose or -xy). In addition, some canned
concatenations are available: -rotate90 or -ccw is
equivalent to -transpose -topbottom; -rotate270 or -cw is
equivalent to -transpose -leftright; and -rotate180 is
equivalent to -leftright -topbottom.
All flags can be abbreviated to their shortest unique pre-
fix.
SEE ALSO
pnm(5), ppmrotate(1)
AUTHOR
Copyright (C) 1989 by Jef Poskanzer.
Permission to use, copy, modify, and distribute this
software and its documentation for any purpose and without
fee is hereby granted, provided that the above copyright
notice appear in all copies and that both that copyright
notice and this permission notice appear in supporting docu-
mentation. This software is provided "as is" without
express or implied warranty.
Printed 5/25/90 25 July 1989 1