private static DoubleMatrix2D xdistanceOld(DoubleMatrix2D matrix,int norm){
  return null;
}

private static DoubleMatrix2D xdistanceOld ( DoubleMatrix2D matrix , int norm ) { return null ; }
constructs and returns the distance matrix of the given matrix . the distance matrix is a square , symmetric matrix consisting of nothing but distance coefficients . the rows and the columns represent the variables , the cells represent distance coefficients . the diagonal cells ( i . e . the distance between a variable and itself ) will be zero . compares two column vectors at a time . use dice views to compare two row vectors at a time .
