[R-sig-eco] Intepreting a plot from a constrained NMDS

2008-12-07 Thread Manuel Spínola
Dear list members, Is there any reference or document on how to interpret a constrained non-metrical multidimensional scaling using ecological data? By constrained I mean after fitting environmental covariables, using, for example, the envfit function in the vegan package. Is it possible to

Re: [R-sig-eco] Intepreting a plot from a constrained NMDS

2008-12-07 Thread Salvador Sánchez-Colón
Well, I guess you can have a look at Data Analysis in Community and Landscape Ecology. Edited by R.H.G. Jongman, C.J.F. ter Braak, and O.F.R. van Tongeren, 1995, Cambridge University Press, 299 pages. I sure hope it helps. Un abrazo, Salvador Salvador Sánchez-Colón, Consultoría Ambiental

Re: [R-sig-eco] Intepreting a plot from a constrained NMDS

2008-12-07 Thread tyler
Manuel Spínola [EMAIL PROTECTED] writes: Is there any reference or document on how to interpret a constrained non-metrical multidimensional scaling using ecological data? The vegan vignette includes a worked example. By constrained I mean after fitting environmental covariables, using, for

Re: [R-sig-eco] Intepreting a plot from a constrained NMDS

2008-12-07 Thread Jari Oksanen
On 8 Dec 2008, at 2:53, stephen sefick wrote: A way that may work is use the axis scores as y in a regression- this seems like it would let you interpret how the communities are distributed in species space. Just a thought NEVER do this! The rotation is not determined in NMDS. If you