I would say that the example for Erase is bad, I mean the drawing. It should have been drawn one on the top of another, not next to each other. It only erases then, right? Thank you for the video!
Hello My english is not gut, i am from Colombia Latin america, I study in the national university and take a class of Geomatic. I muss a exposition about SIG operations (Extract, overlay) but i find not a good and basic text for this theme. Thanks for your gut video, and maiby can you help me whit bibliography or webpage where i can find these.
