[R] Ordination of feature film data question
droberts at montana.edu
Mon Mar 13 21:07:23 CET 2006
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:
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
> 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.
>>>Dr. David Woods M.B.K.S.
>>>16 John Street
>>>Hull HU2 8DH
>>>tel. 44 (0)1482 323421
>>>cel (0781) 259 1772
>>> [[alternative HTML version deleted]]
>>>R-help at stat.math.ethz.ch mailing list
>>>PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
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