With this in mind, we should create a new folder system that will hold all of this work. Later, we may use these data in tools like Google Earth and Sketchup and Adobe Illustrator. We are beginning a new project that is going to include a new GIS dataset. Download an already-clipped 3D dataset Create a Folder to Hold your Model Resources.Unzip it in your c:/temp folder and open the file, compilation.mxd in ArcMap 10.0 or better. Click Here to download the sample dataset.The 3D datasets that we extracr from GIS may also be exported to other tools, such as SketchUp, Google Earth, AutoCAD, Rinoceros, and others. In future tutorials, we will see how these elements can also serve as a laboratory for exploring urban design scenarios. At the end of the tutorial we create a 3D model from these that we can play with and generate renderings from a tool called ArcScene. Our clipped dataset is going to include: A Terrain Model, A Ground-Plan Image, Buildings, and a Clipping Frame. From this we will clip out a smaller dataset that we can play with in 3D without over-burdening a modest computer. We are going to start with a large city-wide repository of data representing terrain, buildings and the materiality of the ground. We will look at a few additional types of data that let us represent the form of places in three dimensions, or at least two-and-a-half dimensions! This tutorial will take this a step further. In an earlier tutorial on Digital Elevation Models, we got some experience with GIS data sources that represent the elevation of the terrain. I'll post the rather indirect method I'm currently using as an answer tomorrow.City Modeling Beginning a 3D Modeling Project in ArcGIS I would prefer an import converter that provides MMA with this import capability, but other routes are welcome too. My question is: How to convert SKP files in a clean polygon based structure in Mathematica? The resulting XML tree is rather complex as is the definition of Collada and getting at the geometry of the object is far from trivial (I managed to coerce the coordinate set of a model from it). DAE files are zipped Collada files and these can be read as XML by MMA's Import. Though MMA can read KMZ/KML files it doesn't read those containing 3D objects. The free version of Sketchup doesn't export to any other formats than the KMZ (Google Earth) and DAE (Collada) formats. The capability to import Sketchup's SKP files in Mathematica would be very nice, but alas, it doesn't do that yet. Many of the 3D buildings in Google Earth are made with Sketchup. Moreover Google has an enormous warehouse of 3D objects so that you actually don't have to do much modeling yourself if you aren't particularly gifted in this area. Google's Sketchup is a nice, simple 3D-object modeler.
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