Question

Clipper not clipping point cloud

  • 11 September 2013
  • 4 replies
  • 1 view

I'm new to FME, using FME 2011.

 

 

I'm trying to tile some LAS files with a shapefile grid, as outlined here: http://fmepedia.safe.com/articles/Samples_and_Demos/Tiling-Point-Cloud-Data

 

 

My sole addition is a Reprojector between the LAS files and the Clipper. Everything lines up in the visualizer, but the Clipper returns all the LAS files as 'Outside'. Is there something obvious I'm missing?

 

 


4 replies

Userlevel 4
Badge +13
Hi,

 

 

Logically it means that your las is far far away...:) what happens if you duplicate the reprojector and add it between the tiles and clipper?

 

Userlevel 4
Badge +13
Also very recommended is to upgrade your FME version, there have been additions and improvements of 3D clipping since 2011.

 

 

See http://fmepedia.safe.com/articles/FAQ/Whats-Great-2012

 

(search for clipper)

 

 

Hope this helps,

 

Itay
@Itay: Sadly, convincing IT to install an upgrade is beyond the scope of today's tasks :)

 

 

Adding the second reprojector ends with the same result. The visualizer drops the LAS on top of the clipper SHP grid, but the clipper output has it all outside.
Userlevel 4
Badge +13
Hi,

 

 

It is strange that the demo doesn't make use of the point cloud coercer to decompose the data. What happens if you insert a point cloud coercer after the LAS reader?

 

 

If you stuck with 2011 for awhile :) then maybe the following link can help

 

 

http://fmepedia.safe.com/articles/Samples_and_Demos/Point-Cloud-and-3D-Clipping

 

 

Itay

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