[R] data(eurodist) and PCA ??

Dan Bolser dmb at mrc-dunn.cam.ac.uk
Wed Oct 13 05:21:03 CEST 2004

If I perform PCA on the 'eurodist' data, should I get an accurate
geographic layout of the cities with biplot?

(barring inversions, i.e. their is no way to define north.. but you get
the idea...)

I have a complex distance matrix, and I am thinking about how to cluster
it and how to visualize the quality of the resulting clusters. 

If I could 'see' the clusters in space I could understand how / what the
cluster algorithms were doing. 

Can I use PCA over the distance matrix to to do that?

Sorry for the dumb questions.


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