code: def center(self):
          '''Obtain the center from the average of all points'''
          points = np.array(self._points)
          return np.mean(points[:, COLS.XYZ], axis=0f center(self):
          '''Obtain the center from the average of all points'''
          points = np.array(self._points)
          return np.mean(points[:, COLS.XYZ], axis=0)
docs: Obtain the center from the average of all points