pgmramp(1)

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 multiply-
       ing 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 pre-
       fix.

SEE ALSO
       pnmarith(1) pgm(5) 

AUTHOR
       Copyright (C) 1989 by Jef Poskanzer.