NAME
pgmramp - generate a grayscale ramp
SYNOPSIS
pgmramp
R -lr | -tb
|
R -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
pnmarith(1), pgm(5)
AUTHOR
Copyright (C) 1989 by Jef Poskanzer.
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