On Wed, 2011-05-04 at 15:44 -0400, Tyler Smith wrote: > Hi, > > Why does vegan not plot species as arrows in plot? I know how to use > scores() and arrows() to create my own arrows, but it seems odd that > this feature is not built in. Is there ever a situation where species > *should* be plotted as points rather than arrows? > > I checked ?plot.cca, vegan-decision, and google, but I didn't find > anything, (excepting the possibility of using biplot.rda, but only for > unconstrained analyses).
I don't know, but it might having something to do with Jari's aversion to using linear methods for species data ;-) More seriously, perhaps this hasn't/didn't occur to the developers, despite being the author of biplot.rda() I never got round to doing a triplot() generic and method... If you would care to offer some code it would be appreciated, otherwise I might get to take a look later in May. G > Thanks, > > Tyler > > _______________________________________________ > 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