vector<string> setParameters();
string getCommandName() { return "pca"; }
string getCommandCategory() { return "Hypothesis Testing"; }
+ string getOutputFileNameTag(string, string);
string getHelpString();
string getCitation() { return "McCune B, Grace JB, Urban DL (2002). Analysis of ecological communities. MjM Software Design: Gleneden Beach, OR. \nLegendre P, Legendre L (1998). Numerical Ecology. Elsevier: New York. \nhttp://www.mothur.org/wiki/Pca"; }
string getDescription() { return "pca"; }