+ vector< vector<double> > calculateEuclidianDistance(vector<vector<double> >&, int); //pass in axes and number of dimensions
+ vector< vector<double> > calculateEuclidianDistance(vector<vector<double> >&); //pass in axes
+ vector<vector<double> > getObservedEuclideanDistance(vector<vector<double> >&);
+ double calcPearson(vector<vector<double> >&, vector<vector<double> >&);
+ double calcSpearman(vector<vector<double> >&, vector<vector<double> >&);
+ double calcKendall(vector<vector<double> >&, vector<vector<double> >&);