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pgmramp - generate a grayscale ramp |
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pgmramp -lr|-tb | -rectangle|-ellipse width height |
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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. |
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-lr |
A left to right ramp. |
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-tb |
A top to bottom ramp. |
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-rectangle |
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A rectangular ramp. |
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-ellipse |
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An elliptical ramp. |
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All flags can be abbreviated to their shortest unique prefix. |
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pnmarith(1), pgm(5) |
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Copyright (C) 1989 by Jef Poskanzer. |
