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I have a polygon of a park boundary in ArcMap. It is a single line around the perimeter of the park. When I display that same polygon in ArcScene, it looks the same. However, when I drape that layer on the DEM (using "float layer on a custom surface"), all sorts of extra lines appear in the polygon. I have clipped the screen below to show a) the image straight out of ArcMap with the polygon on a DEM layer,

a) Polygon in ArcMap

b) the polygon in ArcScene without adding Base Height information

enter image description here

and c) the polygon in ArcScene once I have added "Base Height" information enter image description here

What is going on with this?

  • 3
    Convert it to polyline, draping polygons over terrain is very challenging task – FelixIP Nov 3 '15 at 21:54

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