This week we continued our work on El Mirador and surrounding pyramids. We started with an NDVI (normal difference vegatation index) which highlights biomass base on NIF and IF spectral bands. The second map shows a composite band using bands 4, 5, 1 RGB. The last map is a supervised classification of the surround area using the training sample manager (TSM) in the image classification tool. Polygons were drawn and combined to show each respective class. By utilizing the TSM we are able to highlight different classes of the area given.
I noticed a few glitches in ArcMap, most likely caused by using large files. There was periods of lagging and a few where I needed to restart. Additionally, there may be a need to use higher resolution images. I struggled with locating pyramids and found it to be highly pixelated. With the use of the base map and the swipe feature I was able to narrow it down.
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