[R] enhanced MDS

[Prof Brian Ripley]

On Tue, 28 Jun 2005, Karen Kotschy wrote:

> Hi again
>
> Sorry, in looking again at sammon and isoMDS I see that they seem to do
> exactly what I want, except that they are non-metric, which means, as I
> understand it, that they relate the rank orders of the variables rather than
> the actual distances.
>
> Could I use these non-metric MDS packages even if my distances are metric?

Yes.

BTW, Sammon is not ordinal.  What `non-metric' means depends on who is 
using the term.

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595