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Question

create point cloud from overlapping polygons

  • September 23, 2013
  • 3 replies
  • 38 views
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Hello,

 

I have a set of overlapping polygon features in 3D space. I'd like to create a point cloud from these polygons without overlapping points. I used the "PointCloudCombiner" but the transformer "rasterizes" each polygon individually. How can I avoid this and achive a pc without several overlapping points?

 

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3 replies

takashi
Celebrity
  • takashiCelebrity
  • September 23, 2013
Hi,

 

 

Just an idea:

 

1) Create a point cloud from the polygons.

 

2) Transform the point cloud into 3D points.

 

3) Select one point from each overlapping points.

 

4) Create a point cloud again from the points.

 

Takashi
Why not inspect features with Visual/Data Preview and Feature/Record Information before writing them into a destination dataset?
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  • borone
  • Author
  • September 25, 2013
Hi Takashi,

 

 

thank you for your idea, but it does not work. The points (step 3) do not overlapp.

 

Is there a way to drop point clouds from top onto the overlapping polygons? This should result in points only in the highest polygon of each polygon cluster.

 

 

Borone 
fmelizard
Safer
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  • fmelizardSafer
  • Safer
  • September 25, 2013
Do an AreaOnArea overlay first -- that will end up giving you a set of polygons that don't overlap. Then convert those to points using PointCloudCombiner (I think) -- you should be in business.

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