I have a polygon layer of counties and another polygon shapefile of forest. I want now to fill out the county shape polygon fully in green where more than 30 % of the polygon is overlayed with the forest polygon. What are the steps to take?
My first thoughts on this...
Proceed to create your attribute driven symbology based on this field, where features with a % cover over 30 get a green fill.
Does that make sense? Perhaps there's an easier or more efficient way to do it, but that was the first workflow I thought of after brainstorming on it.