Has anyone implemented "treemaps" in R?
A "treemap" is a visual display of a tree structure in which, at each level,
the several nodes are represented by rectangles which fill the available area.
The areas of the rectangles represent size, and their colors represent some
other variable. There are several algorithms for deciding how to place the
rectangles, ref:
<http://www.cs.umd.edu/hcil/treemaps/>
You might use a treemap to show how your disk space is allocated, how the stock
market is doing by sector, or how Usenet traffic is distributed.
Thanks!
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