pgmramp

generate a grayscale ramp

Synopsis

pgmramp -lr|-tb | -rectangle|-ellipse width height

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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 , pgm

author