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I need to create a groundlevel polygon from a las file,including the height.No classification is added to the pointcloud.
It doesn't need to be precise;otherwise there would be generate to many polygons.A generalisation would be perfect.
For example I get a polygon where the height is between 17 and 17.50 meter;and another polygon where the height is between 17.50 and 18 meter
I tried serveral thing with surfacemodeller,surfacebuilder,creating buffers around the points.But I can't get my hands around this issue.
Hope someone as experience with such an analysis
Hi@stefanh,
Have you tried thePointCloudFilter?You can chose to filter by the z component,and create an expression where it is > 17.50 and < 18 meters.Following this you could use aHullReplacerto create a very generalized polygon.Alternatively,using aPointCloudCoercerbefore the HullReplacer would allow you to create more precise areas out of your points.
Hope this helps,
Nathan
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