Maybe I'm just obtuse, but this graph makes no sense to me: http://lmart999.github.io/assets/cluster_gis.png
What exactly do the colors mean? And what do those brackets at the top and at the side mean?
What exactly do the colors mean? And what do those brackets at the top and at the side mean?
The brackets are presumably an explanation of how the "clustering" was done, though with such a small data set it could have been done manually.