what is the purpose of the nmds weights in dissimilarity matrix weighting dissimilarity matrix what is the purpose of nmds dissimilarity matrix nmds for biomass calculation how to create dissimilarity matrix where is the error dissimilarity matrix what is the mds if there is no nmds with dissimilarity matrix what is the data matrix for nmds nmds for biomass what is nmds when is nmds empty weight in nmds nmds for biomass weights of a dissimilarity matrix what is nmds in the mass package how do i create a dissimilarity matrix if mymetamds is negative what is the problem with this