freebsd man page for pgmramp

pgmramp(1)                                                    General Commands Manual                                                   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 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.

                                                                 24 November 1989                                                       pgmramp(1)