Global Mapper v25.0

Elevation Grid Combination

SimonJSO
SimonJSO Global Mapper User
edited April 2014 in Technical Support
I have two elevation grids, one large rectangle and the other a small annulus (donut shape) which is completely contained by the other's boundary. I need to combine them in a way that I map the annulus data within it's own borders, and the rectangle data everywhere else. I don't know if this makes sense, so I'll put it another way.

How do I remove a polygonal area from inside an elevation grid and/or how can I combine these two layers by using the larger area bounds as opposed to the smaller area bounds?

Sorry for the stupid question. I just started using this software.

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