On Wed, 2011-04-13 at 12:13 +0200, Andres Mellado Diaz wrote: > Hi, > > It seems that there is no R function for TWINSPAN, but you can get the > program for free here: > > http://www.canodraw.com/wintwins.htm > > Anyway, I would better use IndVal analysis (Dufrene & Legendre 1997) > that you can find here for R (indicspecies > package):http://sites.google.com/site/miqueldecaceres/software
Or in package labdsv under function indval(). And anyway, TWINSPAN and IndVal do very different things; the former clusters data in groups and *then* also computes indicator species values. The latter assumes that a clustering has already been performed and computes indicator species values for that clustering. G > hope this helps, > > Andres > > Yong Zhang <2010202...@njau.edu.cn> escribió: > > > 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:2010202...@njau.edu.cn > > > > _______________________________________________ > R-sig-ecology mailing list > R-sig-ecology@r-project.org > https://stat.ethz.ch/mailman/listinfo/r-sig-ecology -- %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% Dr. Gavin Simpson [t] +44 (0)20 7679 0522 ECRC, UCL Geography, [f] +44 (0)20 7679 0565 Pearson Building, [e] gavin.simpsonATNOSPAMucl.ac.uk Gower Street, London [w] http://www.ucl.ac.uk/~ucfagls/ UK. WC1E 6BT. [w] http://www.freshwaters.org.uk %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% _______________________________________________ R-sig-ecology mailing list R-sig-ecology@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-ecology
