How do I create a greyscale version of a colour raster for a backdrop map? Digimap Community Q & A › Category: Data Download › How do I create a greyscale version of a colour raster for a backdrop map? 0 Vote Up Vote Down Anonymous asked 7 years ago I have download a colour raster from Digimap Data Download but I want a greyscale version to use as a backdrop in a GIS.
Anonymous