Hello R-user community!
I am running R 2.7.0 on a Power Book (Tiger). (I am still R and
statistics beginner)
Presently I try to run the function metaMDS (vegan) using an existing
dissimilarity-matrix.
As I would like to start with this matrix I thought I could just give
the matrix using the x= -argument
Test<-metaMDS(x=Dist.Gower)
Fehler in inherits(comm, "dist") : Argument "comm" fehlt (ohne
Standardwert)
But obviously that is not the way it works.
The second problem is that it seems that I have zero distance value
between some objects what causes a problem in isoMDS (vegan)
Test<-isoMDS(Dist.GowerTest) Fehler in isoMDS(Dist.GowerTest)
: zero or negative distance between objects 240 and 241
Sorry might be that I am just to stupid to understand the
documentation, but could somebody help me anyway.
Thanks in advance
B.
Birgit Lemcke
Institut für Systematische Botanik
Zollikerstrasse 107
CH-8008 Zürich
Switzerland
Ph: +41 (0)44 634 8351
[EMAIL PROTECTED]
175 Jahre UZH
«staunen.erleben.begreifen. Naturwissenschaft zum Anfassen.»
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