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I have huge point clouds (Millions of points):

point cloud

I need to create a shapefile with the boundary of this point cloud. When I was working with this 2 months ago I could do this somehow:

enter image description here

I'm pretty sure I was using the Minimum Bounding Geometry with the convex hull option. But when I try to recreate it I get the following result:

enter image description here

I've been trying to figure out what did I do differently, but no luck yet.

I have ArcGIS 10.2 with advanced license.

  • Use concave hull toolbox by @Richard fond in geonet.esri.com/blogs/richard_fairhurst/2015/06/11/… – FelixIP Apr 12 '16 at 22:24
  • It seems this tool is very slow. It's running for an hour now. – Gary Apr 13 '16 at 0:48
  • Another thing to try is creating TIN and delineating it, i.e. removing long sides on perimeter – FelixIP Apr 13 '16 at 1:01
  • TIN method doesn't work. I ran out of memory (16GB) – Gary Apr 13 '16 at 1:41
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    Very dirty. Export view as image with world file. Convert result to grid and export to polygon. Try different resolution for export – FelixIP Apr 13 '16 at 1:48
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You can try Aggregate Points tool (Cartography Tools / Generalization). It will cluster your points based on user-given distance, so you have to know the dispersion of your point FC to define a very good one.

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