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
portable anymap.
OPTIONS
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 prefix.
SEE ALSO
pnmrotate(1),
pnm(5)
AUTHOR
Copyright (C) 1989 by Jef Poskanzer.