Hi Sean, Actually, you are in a great situation to build some nice looking models from your data. There are some workflows that could work for you. Obviously, some trade-offs are involved but on the plus side it is really quick to do. Let's say you have DEM and DSM as Raster Data available (if not then google "ArcGIS convert LAS Multipoints to Raster"): Import DEM and DSM layers as Terrain Layers in CityEngine. Make sure that you convert your elevation data from feet to meter - if needed using the layer attribute window. Create a cga with two attributes: attr Ground_H = 0 attr Eave_H = 0 Create a start rule rule: Footprint --> extrude(Eave_H-Ground_H) X. Connect the two attributes with the height values from each terrain layer Run the rule and have fun! This is of course quite basic. But now you could extend this rule with generating roof shapes among other things. At this point it is up to you if you use rule by thumb precision for reconstructing the shapes or if you invest more time to classify building with roof forms, orientation, style etc. In any case, the generated geometry is great to generate floors and to run reports on surfaces etc... Let me know if that helps! Best, Jan
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