This week's lab required us to complete a few of the training courses offered on the Esri website. These courses were an excellent resource and instructional material, offering several helpful tips and tools for working with 3D scenes and visibility analyses.
These tips started with some basic camera and scene controls utilizing the mouse or keyboard/track pad combo. These included zooming in and out on a specific location within the scene, rotating the camera angle around a specific point in the scene, and rotating the scene around the camera position. We also learned how to link a 2D map and 3D scene. This was one of the most fascinating parts of the lab. The courses also instructed us on how to modify the output of a viewshed analysis using fields. We learned that, among others, the range of analysis, angle of analysis, and height of observer/target points could be adjusted utilizing fields in the input datasets' attribute tables.
The courses required us to implement a few new tools for our analyses. The Construct Sight Lines tool was used to create lines of sight between observer points and a feature (parade route), the Line of Sight tool was used to determine visibility along the sight lines created by the Construct Sight Lines tool, and the Viewshed tool was used to find how much of an area was visible from (illuminated by) the observer points (streetlights). The scenarios presented in the lessons brought the concepts to life in a way that made for an easier and more engaging learning experience. The possibilities for applying these visibility analyses and tools to the real world are immense and exciting to consider.
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