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I have several .tab files each with a grid of points (in British National Grid) each point has a height value. I want to make these into a 3D surface/terrain that i can use in sketchup but do not know how

 

(The files were generated from photogrametry by the company who supplies our aerial photography)

 

 

I have tried SurfaceModeller, SurfaceDraper, RasterDEMGenerator, DEMGenerator and TINGenerator but none of these have created anything 3D just a load of points or a flat grey square.I did not know what kind of writer to use so have just been using the inspector as output

 

 

Eventually I want to put buildings on to the terrain. I previousely used Extrude to make the building outlines 3D but I want these to sit on the terrain (at the moment they are all at one level not on the hill like in real life). Each building has a height value for extruding and a Z value indicating its height above sea level which i took as an avarege of the height points in the building footprint. I dont know if i drape these 3D buildings over a 3D terrain then they will appear at the correct height (not inside the hill) or if there is another way of making the buildings appear at the correct z value spatially. Can anyone advise please
Hi,

 

 

have a look at this article for some tips and ideas: https://knowledge.safe.com/articles/Samples_and_Demos/3D-Terrain-Model-with-Buildings-from-Point-Cloud

 

 

David
Thank you David, I had been using the 3D tutorials but had missed out the 3D forcer. My buildings are now floating at the correct height

 

 

Unfortunately my point heights will not turn into a TIN, the output is always just a flat square. Maybe it is in the wrong format? It is just a .tab file with a grid of points each with one attribute of 'elevation' (I did try using the coordinate extractor to give it x and y attributes also but that didnt make any difference)

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