Man page 1 : pnmflip

pnmflip - perform one or more flip operations on a portable anymap

pnmflip [ -leftright | -lr ] [ -topbottom | -tb ] [ -transpose | -xy ] [ -rotate90 | -r90 | -ccw ] [ -rotate270 | -r270 | -cw ] [ -rotate180 | -r180 ] [ pnmfile ]

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

R -lr ); top for bottom ( -topbottom or

R -tb ); and transposition ( -transpose or

R -xy ). In addition, some canned concatenations are available:

-rotate90 or

-ccw is equivalent to

-transpose

R -topbottom ;

-rotate270 or

-cw is equivalent to

-transpose

R -leftright ; and

-rotate180 is equivalent to

-leftright

R -topbottom .

All flags can be abbreviated to their shortest unique prefix.

pnmrotate(1), pnm(5)

Copyright (C) 1989 by Jef Poskanzer.