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2011 Jul 07
0
CAPdiscrim error in BiodiversityR
...vegdist(spdata, method ="bray")
capmodel = CAPdiscrim(dists ~ elevation, data =envdata, axes =4, m=0,
permutations = 999)
This returns the following error:
Error in eval(predvars, data, env) :
numeric 'envir' arg not of length one
In addition: Warning messages:
1: In cmdscale(distmatrix, k = nrow(x) - 1, eig = T, add = F) :
some of the first 88 eigenvalues are < 0
2: In sqrt(ev) : NaNs produced
same error occurs when i run:
capmodel = CAPdiscrim(spdata ~ elevation, data =envdata, dist = "bray", axes
=4, m=0, permutations = 999)
I'm quite stumped as to what is...