When creating a new map based on an existing using r.mapcalc, the color
table of the old map is used for the new map. However, if the new map
only contains a subset of the values of the old map, how can I trim the
color table so it only contains color definitions for the values present
in the new map? Any easy (automatic) way to do this? Note, this is
probably only useful for integer (category) maps.
Rgds.
Paulo
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