pnmflip
perform one or more flip operations on a portable anymap
see also :
pnmrotate
Synopsis
pnmflip
[-leftright|-lr]
[-topbottom|-tb]
[-transpose|-xy]
[-rotate90|-r90|-ccw ]
[-rotate270|-r270|-cw ]
[-rotate180|-r180] [pnmfile]
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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 ,
pnm
author
Copyright (C)
1989 by Jef Poskanzer.