Dear list members,

I am working on an NMDS using metaMDS from vegan with the Doubs fish data
from the book Numerical ecology with R.

> especies <- read.csv("DoubsSpe.csv", row.names = 1)
> e.mds = metaMDS(especies, distance = "bray")
Run 0 stress 0.003706943
Run 1 stress 0.0004788424
... New best solution
... procrustes: rmse 0.009197047  max resid 0.01874812
Run 2 stress 0.0004600702
... New best solution
... procrustes: rmse 0.0002883791  max resid 0.0005590752
*** Solution reached

Mensajes de aviso perdidos
In distfun(comm, method = distance, ...) :
  you have empty rows: their dissimilarities may be meaningless in method
“bray”
>

My results are "strange" (stress is too low and different to the one on the
book) and the plot is very different to the one that appears in the book.

Any clue what is the problem?

Best,

Manuel

-- 
*Manuel Spínola, Ph.D.*
Instituto Internacional en Conservación y Manejo de Vida Silvestre
Universidad Nacional
Apartado 1350-3000
Heredia
COSTA RICA
mspinola@una.ac.cr
mspinola10@gmail.com
Teléfono: (506) 2277-3598
Fax: (506) 2237-7036
Personal website: Lobito de río <https://sites.google.com/site/lobitoderio/>
Institutional website: ICOMVIS <http://www.icomvis.una.ac.cr/>

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