Hi,
I am not sure I understand but why not just use the ground points and the
building points together in the same DEM? Do you only have the ground
classified points?
Nicolas
> Le 12 mai 2017 à 10:05, KevinKnoche [via OSGeo.org]
> <ml+s1560n5320349...@n6.nabble.com> a écrit :
>
> Hey there,
>
> I'm currently working on a project concerning heavy rainfalls. What I'm
> supposed to do is an 2D numerical calculation of flooded area of a town. For
> this I have a special plugin for QGIS.
>
> What this plugin needs is a precise DEM includes breaklines of buildings,
> walls etc.
> I've already managed to build up a DEM from LIDAR Data including some
> breaklines with Z-Values.
> What makes some trouble is the fact, that I only managed to include the
> breaklines for the buildings like a bowl so that they only have foundation
> walls and no roof. So if it would rain they will be filled up with water
> instead of contributing to the surface runoff.
>
> Does somebody of you have an idea how to include roofs onto the breaklines?
> Plane ones would be precise enough.
>
> Thanks a lot :)
> Kevin
>
>
>
>
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