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Hello,

 

 

I'm able to drape feaures on a DTM with SurfaceModeller, but I want to have Z distance between the point (for exemple on a three) that I project and the same point projected (on the ground).

 

how can it be possible?

 

thanks

 

To get this, all you need to do is use the CoordinateExtractor twice on the feature.

 

 

First, use it on the feature before you manipulate it.  Save the z variable to something like _AMSL

 

 

Then, use the SurfaceModeller (or draper) to drape the feature.

 

 

Then, use the CoordinateExtractor again.  Be sure to rename the z variable to something different from the first time.  In this case, call it _GroundLevel.

 

 

Now, create a third attribute with the AttributeCreator, called _AGL.  Define it as a formula, which is _AMSL - _GroundLevel.

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