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.