Dear list members,

I got an error message working with Raup–Crick distance in metaMDS.

> flora.mds = metaMDS(indicadora, distance = "raup", trace = FALSE, zerodist
= "ignore")
Error in isoMDS(dist, k = k, trace = isotrace) :
  zero or negative distance between objects 1 and 2
In addition: Warning message:
In distfun(comm, method = distance, ...) :
  data have empty species which influence the results im method raup

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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