[R-sig-eco] The TWINSPAN program

[Gavin Simpson]

On Wed, 2011-04-13 at 09:25 -0300, Diogo B. Provete wrote:
> Dear Zang,
> this procedure is not currently used, since  Pierre Legendre and coleagues
> developed a new metric called IndVal, which is available in the labdsv
> package in R.

I'm sorry, (I don't like TWINSPAN...) but to claim TWINSPAN is not used
because it has been superseded by the IndVal approach is totally
incorrect.

TWINSPAN and IndVal do **very** different things; the former produces a
cluster analysis that happens to churn out [a form of] indicator species
values, whilst the latter **only** computes [a form of] indicator values
- you have to supply the clustering.

G

> Good Luck,
> Diogo
> 
> 2011/4/13 <r-sig-ecology-request at r-project.org>
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> >   1. The TWINSPAN program (Yong Zhang)
> >
> >
> > ---------- Mensagem encaminhada ----------
> > From: "Yong Zhang" <2010202035 at njau.edu.cn>
> > To: "r-sig-ecology" <r-sig-ecology at r-project.org>
> > Date: Wed, 13 Apr 2011 17:06:24 +0800
> > Subject: [R-sig-eco] The TWINSPAN program
> > Helo all,
> >
> > These days, when I looked into the multivariate analysis of community data,
> > I noticed that there is a very useful classification approach named
> > "TWINSPAN", maybe most of you already know that its full name is "Two-way
> > indicator species analysis", and the program has the same name---TWINSPAN.
> >
> > Could any one tell me whether this program is for free? And when and how
> > could get one? Any hint or suggestion from you will be greatly appreciated.
> >
> > Thanks very much for your time and answer.
> >
> > All the best,
> > Yong
> >
> >
> > 2011-04-13
> >
> >
> >
> > ZHANG Yong
> > Lab of aquatic insects & stream ecology
> > Dept.of Entonology, Nanjing Agricultural University
> > Nanjing, 210095,China
> > Phone number:  (+86) -25-84395241
> > E-mail:2010202035 at njau.edu.cn
> >
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> 
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