Tuesday, April 9, 2013

Intro to GIS, Lab 13: Georeferencing & ArcScene

Bald Eagle nest location on UWF campus

This week in lab we learned how to georeference a photo with an unknown spatial reference system.  In other words, we were able to give a simple 'digital photo' a correct reference location on a map.  We had a known map of the campus building and roads and then two raster files of the campus.  We used different tools to associate the building shapes of the known file with the building images of the unknown files.  It was interesting and fun getting the two to become one.  We also learned how to create new buildings and roads with the Editor tool.  A cool feature I really enjoyed using was creating a buffer zone or easement around, in this case, a Bald Eagles nest near the UWF campus.  Hopefully in my future, I'll be creating numerous conservation easements!


3-D map of UWF campus

In the second part of the lab, we were introduced to ArcScene.  This program creates 3-D maps.  It's a useful program and provides you with a little extra perspective when looking at a map.  One thing I did notice, however, was how pixelated the map became once it was exported as a .jpg.  It looses a certain amount of luster.  I tried increasing the export resolution, however, it still didn't look as clear as it did in ArcScene.

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