pgmramp (1) Linux Manual Page
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.