Question

RasterDEMGenerator Issue

O
Rank
Badge +3

Hello,

 

Please can someone help me with this very strange issue i have encountered with the RasterDEMGenerator transformer.

 

I have uploaded some sample data and the sample workbench. The input features have 40 vertices to pass through to the RasterDEMGenerator but it fails each time, whereas when i add in another transformer - PointCloudCombiner before the RasterDEMGenerator it works fine.

 

I need to get to the bottom of this issue as i cannot use the PointCloudCombiner transformer.

 

Many thanks

 

@Mark Stoakes​ @Takashi Iijima​ @danatsafe​ 

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3 replies

nielsgerrits
Rank
Userlevel 6
Badge +33

I have not checked your data yet, but what is the grid distance of the vertices and what is the cell size in the RasterDEMGenerator?

O
Rank
Badge +3

The vertices are spaced every 10m or so, and the cell size is set to 2m so this shouldnt be the issue

nielsgerrits
Rank
Userlevel 6
Badge +33

The coordinates in your dataset have 9 decimals, which is extremely small in meters. Rounding the coordinates to mm (3 decimals) got it working for me.

 

As an alternative, changing the Surface Tolerance from 0 to something really small worked as well.

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