What does the -d flag 'Dither' in GRASS GIS mean? For example in r.composite
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1grass.osgeo.org/grass64/manuals/r.composite.html – risail Mar 16 '17 at 19:29
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2en.wikipedia.org/wiki/Floyd%E2%80%93Steinberg_dithering – Midavalo♦ Mar 16 '17 at 20:10