code: public boolean isAnyNumeric(){
      int cnt =0;
      for(int i=0;i<_cols.length;++i) {
        if( !_cols[i]._ignored && !_cols[i]._response && _cols[i]._isNumeric) {
          cnt = 1;
          break;
        }
      }
      if(cnt ==1) return true;
      else return false;
    }
docs: checks if there are any numeric features in the frame