 Hi everyone, 

I am performing some correspondence analysis. In the Vegan package, all centroid analysis was performed based on CCA. I tried to use the sample data set (dune & dune.env) to run a centroid analysis on its DCA output but failed.  

So my question is: Is it possible to perform centroid analysis based out DCA? If it is indeed possible, could some one give me some tips?  

Thank you very much. 

Fan 
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