[R] Ordination of feature film data question

Gabor Grothendieck ggrothendieck at gmail.com
Mon Mar 13 21:32:23 CET 2006


Note that there is a Task View for ecology at:

http://cran.miscellaneousmirror.org/src/contrib/Views/Environmetrics.html

On 3/13/06, Dave Roberts <droberts at montana.edu> wrote:
> In addition to the references from Professor Ripley, you might be
> interested in the R packages and pages maintained by ecologists for such
> work (even if you're doing movies).  Packages labdsv, vegan, and ade4
> both have a broad variety of distance/dissimilarity indices and numerous
> alternative ordination programs.  You might also be interested in an
> ecologically oriented web page at:
>
> http://ecology.msu.montana.edu/labdsv/R
>
> Dave R.
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> David W. Roberts                                     office 406-994-4548
> Professor and Head                                      FAX 406-994-3190
> Department of Ecology                         email droberts at montana.edu
> Montana State University
> Bozeman, MT 59717-3460
>
> Frank Thomas wrote:
> > Sorry that I send this text for a second time - I didn't see my posting
> > before (though I have set the preferences to see them)
> >
> > If you want a comparison of different distance measures you might try
> > the manuscript of Johann Bacher who is a specialists in cluster methods.
> > He published an in-depth text on his web site
> > http://www.soziologie.wiso.uni-erlangen.de/koeln/
> >
> > Regards,
> > F. Thomas
> > Prof Brian Ripley wrote:
> >
> >>`Ordination' is ecologists' terminology for multidimensional scaling.
> >>You will find worked examples in MASS (the book, see the R FAQ), and the
> >>two most commonly used functions, isoMDS and sammon, in MASS the package.
> >>
> >>In your example, the main issue is going to be to choose an appropriate
> >>dissimilarity measure, and dist() (in stats) and daisy() in package
> >>cluster will give you a good start.
> >>
> >>On Sat, 11 Mar 2006, David Woods wrote:
> >>
> >>
> >>
> >>>I am severely rusty re. multivariate / ordination analysis, having done
> >>>my last work 40 years ago (in plant ecology). I am interested in
> >>>exploring applications of multivariate analytic approaches to data from
> >>>the history of motion picture films. I'd very much appreciate any
> >>>pointers as to possibly appropriate proceedures. The individual
> >>>"samples" may be individual films and the measurements may be the
> >>>presence and absence of actors and production personel; for example two
> >>>films with many actors and / or crew in common would be located close
> >>>together in the resultant ordination, while films with few or no
> >>>personel in common would be located far apart.
> >>>
> >>
> >>
> >>
> >>>May I express my appreciation in advance to any helpful recipients.
> >>>cordially
> >>>David Woods
> >>>
> >>>Dr. David Woods M.B.K.S.
> >>>Holcus Ltd.
> >>>16 John Street
> >>>Kingston Square
> >>>Hull  HU2 8DH
> >>>East Yorkshire
> >>>UK
> >>>
> >>>tel.  44 (0)1482 323421
> >>>cel  (0781) 259 1772
> >>>     [[alternative HTML version deleted]]
> >>>
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> >>>
> >>
> >>
> >
> >
> >
>
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