docs: public void setMaxSize( int maxRows , int maxCols )
      {
          this.maxRows = maxRows; this.maxCols = maxCols;
  
          Q = new DMatrixRMaj(maxRows,maxRows);
          R = new DMatrixRMaj(maxRows,maxCols);
  
          Y = new DMatrixRMaj(maxRows,1);
          Z = new DMatrixRMaj(maxRows,1);
      }