[R-sig-eco] using metaMDS and getting error messages
Aisyah
aisyah.faruk at ioz.ac.uk
Tue Feb 2 14:25:48 CET 2010
Hi
Im currently trying to use the metaMDS function on MASS and keep getting
this message. Im new at this and need some help.
>stream.mds<-metaMDS(stream)
Using step-across dissimilarities:
Too long or NA distances: 65 out of 105 (61.9%)
Stepping across 105 dissimilarities...
Error in isoMDS(dist, k = k, trace = isotrace) :
an initial configuration must be supplied with NA/Infs in 'd'
In addition: Warning messages:
1: In stepacross(dis, trace = trace, ...) :
Disconnected data: Result will contain NAs
2: In metaMDSdist(comm, distance = distance, autotransform = autotransform,
:
Data are disconnected, results may be meaningless
The data is abundance of different species in certain plots. I've
standardized the data using the wisconsin function.
Thanks
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