PNMFLIP

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.
      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

      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 documentation.  This software is provided "as is" without
      express or implied warranty.