Sunday, April 3, 2016

3D Mapping

   In this lab, the learning objectives were to: perform techniques to visualize raster and feature data in 3D, convert 2D feature to 3D using elevation values derived from lidar data, utilize the 3D Analyst Extension in ArcMap, demonstrate proficiency in ArcScene, and export data to a KMZ file to be viwewed in Google Earth. Below is a screenshot of one of the 3D labs I completed in ESRI's virtual campus course training.


   In this part of the ESRI training, vertical exaggeration was implemented through ArcScene. It is used to give a more dynamic appearance to terrain that has small changes in elevation. Here, the terrain in Minnesota is enhanced. The other ESRI training labs demonstrated how to: set base heights for raster and feature data, set illumination and background color, and extrude features based on height or other attributes. 
   3D mapping is beneficial in many ways. It is as easy to share as 2D data and has useful applications for simulations. It can present vertical information as cant be seen in 2D and has intuitive symbology. It is easier to recognize terrain and location because of its human-centric aspects. However, it is easy to get disoriented while navigating. Map content can be hidden underneath surfaces or in building interiors. There is also the issue of performance. Since 3D mapping entails a lot of data, performance issues with computer hardware can arise. Overall, 3D mapping is a unique and immersive way to communicate data and information.
 

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