If you have land tenure mapping, and you're only interested in the areas for which there are no polygons in a region, is there a way to query these areas out and create a shapefile from them.
A tangible example using Mining Claim Mapping:
Various forms of land tenure are represented for an area. These areas are captured with polygon geometry. Areas include Mining Claims, and various forms of Patented Mining Lands (ie - Surface rights only, surface & mineral rights, 11 year lease, etc, etc).
In this example, If I'm ONLY interested in the areas that are not captured (which would be Crown Land), how do I go about extracting that data (data which is "NOT THERE") without manually digitizing? Is there a way to do this with a select by location query? The only thing I can come up with is to use the bpoly command in AutoCAD, but this would be a bit time consuming and would also lend itself to the possibility of oversights/errors on the part of the user.