First post here, and a thanks for this wonderfull sw.
I create some 8bit, greyscale raster maps from geotiffs, then process them with an array package, creating a new map with different levels of grey. These maps predict the Risk of disease infestation in agricultural areas.
I then use “posterize” to have 10 classes, making the maps easier to analyze.
I use this command, after RTM:
gmic png_in.png fx_posterize 67,19,0.85,12,0,40,10,0 -output png_out.png
The maps come out really nice, in general, and I create a 10 level legend for visualizing Risk on the map.
What I want to try now, is to convert/posterize my 8bit grey to 10 shades only between red and green. Red “High Risk” <—> Green “Low Risk”.
I have not figured this out yet,
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