== Creating & Analyzing a Semi-Random City Propagation Scene ==
For this tutorial lesson, you will use a wizard to build the geometry of an urban environment. Click on the <b>Random City Wizard</b> [[Image:RandomCityWizardIcon.png]] button of the Wizard Toolbar or select the menu item '''Tools → Propagation Wizards → Random City'''. A dialog pops up and asks for the total city extents and number of buildings. Accept the default values of 250m and 25 for the city size and the total number of buildings in the scene, respectively. Change the "Max Building Height" to 60 and press '''OK''' button. The wizard creates 25 buildings with random locations and random dimensions in an area of 250m × 250m centered at the origin of coordinates.
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