Use the Rectangle tool on ArcMap's Draw Toolbar to create a rectangle that will seve as your frame.By the time we get around to exchanfing the model between a number of tools, you will appreciate the utility of having a retangular model with a vector clipping frame that can be used to register the various parts of the model as we move them into various tools that do not support georeferencing. The main reason for the rectangle premise is that the ground plan of the model is going to be exchanged as an image. It is convenient to plan our model with a rectangular boundary. For a deeper discussion of a recommended filesystem, see Organizing Geographic Data for Re-Use. Later, you may add new subfolders to hold the resources that are used and created by other applications. I recommend that you have an outer folder named for your site, and a sub-folder within this to hold your GIS data. 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.
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