[R] enhanced multidimensional scaling?

[Martin Maechler]

>>>>> "Karen" == Karen Kotschy <karen at biology.biol.wits.ac.za>
>>>>>     on Tue, 28 Jun 2005 13:13:31 +0200 writes:

    Karen> Dear R list Would anyone be able to tell me whether
    Karen> it is possible to do "enhanced multidimensional
    Karen> scaling" (enhanced MDS) in R? In other words,
    Karen> something that goes beyond "cmdscale" by iteratively
    Karen> improving the fit between observed dissimilarities
    Karen> and inter-object distances, using the KYST algorithm
    Karen> (Kruskal, 1964).

Since you know about cmdscale(), do read it's help page more
carefully, in particular the section  "See Also:"
{which, in an ESS help buffer, is reachable by simple "s s"
The help page of the first function mentioned there is entitled
`` Kruskal's Non-metric Multidimensional Scaling ''

    Karen> I have found several implementations of non-metric
    Karen> MDS in various packages but nothing like what I have
    Karen> described above.

well, you've mentioned Kruskal(1964), but not described much
more, hence I hope the above hint does help.

Regards,
Martin Maechler, ETH Zurich