man pgmramp (Commandes) - generate a grayscale ramp
NAME
pgmramp - generate a grayscale ramp
SYNOPSIS
pgmramp -lr|-tb | -rectangle|-ellipse width height
DESCRIPTION
Generates a graymap of the specified size containing a black-to-white ramp. These ramps are useful for multiplying with other images, using the pnmarith tool.
OPTIONS
- -lr
- A left to right ramp.
- -tb
- A top to bottom ramp.
- -rectangle
- A rectangular ramp.
- -ellipse
- An elliptical ramp.
All flags can be abbreviated to their shortest unique prefix.
SEE ALSO
AUTHOR
Copyright (C) 1989 by Jef Poskanzer.