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. Author manuscript; available in PMC: 2009 Dec 2.
Published in final edited form as: Cartogr Geogr Inf Sci. 2008 Jan 1;35(1):33–50. doi: 10.1559/152304008783475689

Figure 2.

Figure 2

A 2-D cartographic color scheme is applied to a Self-Organizing Map (after Kohonen (2001)), the result is displayed in the SOM component (middle). A circular node in the SOM component represents a cluster, the multivariate characteristics of which are depicted in a PCP (i.e., the red node is depicted by the PCP at right-upper corner). Similar clusters (thus the nodes) are assigned similar colors and different clusters are assigned distinct colors. A node’s size is proportional to the amount of data items contained in the cluster.