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 [[alternative HTML version deleted]]