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How to creat a surface from a grid constrained by a boundary line.

Andy in CanadaAndy in Canada Global Mapper UserPosts: 9
I have a grid in 3d as an ascii file and a boundary line as an ascii file.
I create a polygon in GM of the boundary line.
I use Elevation Grid Creation with a grid boundary but I dont get a decent looking surface.
Am I expecting too much of GM
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