I have a number of drawings which I converted into geodatabase feature classes. Most drawings are composed or connected 3D polylines from which I want to construct TIN surfaces and multipatch features. In order to clip the TIN I also need to have the exact footprint. How I normally do it is to manually select the perimeter polylines which I then merge into one perimeter and convert to polygon. This works but is extremely time consuming because I often have to manually select 100s of polylines without missing a single connecting line. Can I somehow run a spatial selection to only select the polylines that form the ultimate perimeter?
Below is a typical example - i need to select only the perimeter polylines:
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Below is a typical example - i need to select only the perimeter polylines:
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