Dear all

I'm using betadisper () to evaluate if geographical and historical heterogeneity differ statistically between two archipelagos. I have not problems in obtaining the results for the geographical hypothesis (computing the Euclidean distance between UTM centroids of each island), but for the historical hypothesis the following message appears:
Error en vectors[, want, drop = FALSE] %*% diag(sqrt(abs(eig))) : 
  argumentos no compatibles
I calculate the historical triangular matrix computing the Euclidean distance between the oldest geological age of each island (all of them are from volcanic origin). I've also tried calculating just the difference in mya between all pairwise comparisons of islands, which gives basically the same results (but with different scaling).
Can anybody help me with this problem?
Thank you in advance
Silvia 		 	   		   		 	   		  
	[[alternative HTML version deleted]]

