Graphics Reference
In-Depth Information
Figure
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Polar hierarchical cluster tree of US murder rates
Figure
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[his figure also appears in the color insert.] Mobile of bank employee data
Suppose we have a directed geometric tree with one root having many children.
Such a tree may represent a flow from a source at the root branching to sinks at the
leaves. Water and migration flows are examples of such a tree. Phan et al. (
)
present a suite of algorithms (including hierarchical cluster analysis and force-direc-
tedlayout)forrenderingaflowtree.hedata consistofthegeographiclocation ofthe
