Following last weeks creation of the Land Use Land Cover map, we continued this week with ground truthing. By using Google Maps satellite view, we were able to verify out initial LULC assessments. By randomly picking 30 sample points and creating a new shapefile we compared the codes we provided last week to what that land use/land cover actually was. It was cool to see the differences. Areas where I generalized as "Residential" often times had various community buildings dispersed throughout. After staring at this image for so long last week, it was nice to get down into "Street View" on Google Maps to actually see what was going on. I enjoyed this lab.
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| Ground truthing on my LULC map. 70% accuracy. |
Above is my LULC map with my 30 randomly selected spots. The green dots represent accurate code classification, while the red dots represent locations that were not accurate. After all 30 sample points were verified, an accuracy assessment was done. This map is 70% accurate.
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