Whats to be done if one uses more than three bands to make an Unsupervised Classification?
ANSWER The first Unsupervised Classification operates on the color composite made from Bands 2, 3, and 4. Examine the resulting image when just 6 clusters are specified. The light buff colors associate with the marine waters but are also found in the mountains where shadows are evident in the individual band and color composite images. Red occurs where there is some heavy vegetation. Dark olive is found almost exclusively in the ocean against the beach. The orange, green, and blue colors have less discrete associations. We next display a more sophisticated version, again using Bands 2, 3, and 4, in which 15 clusters are set up; a different color scheme is chosen. Try to make some sense of the color patterns as indicators of the ground classes you know from previous paragraphs. A conclusion that you may reach is that some of the patterns do well in singling out some of the features in parts of the Morro Bay subscene. But, many individual areas represented by clusters do not appear to co
