I am a geophysicist and I am going to create a prospectivity map.
In other words, I've got several geophysical maps (e.g. magnetic anomaly, Bouguer anomaly etc.) and I would like to pick up the values for some interesting areas (e.g. magnetic anomaly weight 2/5, Bouguer anomaly weight 4/5....), assign weight to them and tell the program to find other areas in the map with similar values. Does any one know how may I do this?