[R] maps. display hierararchical cluster analysis results on a map?

[Marshall Feldman]

Besides symbols, size and color ramps come to mind

	Marsh Feldman

-----Original Message-----
From: David Farrar [mailto:dfarrar at newrvana.com] 
Sent: Thursday, November 02, 2006 9:37 PM
To: R-help at stat.math.ethz.ch
Subject: [R] maps. display hierararchical cluster analysis results on a map?

All,
   
  I have done a cluster analysis analysis of some spatial locations, 
  based on variables other than lat-long, and want to show the results
  on a map to see if my clusters have some geographic meaning.  
   
  For kmeans (etc.) I would just use different symbols (etc.)
  to distinguish the clusters, but I am doing hierarchical CA.  I am looking
  for ideas or (better) code.  
   
  One idea would be to display the convex hull of each cluster on the map.
Another would be to place some graph on the map, connecting the locations, 
  with the same topology as my dendrogram.  
   
  It seems like something useful would have been developed by biologists 
  studying geographic variation of a species.  
   
  Any ideas will be greatly appreciated.
  regards,
  Farrar
   
   
   
   

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