docs: def set_x_grid_info(self, x_low, x_high, num_x, xscale, xval_name):
          """Set the grid values for x.
  
          Create information for the grid of x values.
  
          Args:
              num_x (int): Number of points on axis.
              x_low/x_high (float): Lowest/highest value for the axis.
              xscale (str): Scale of the axis. Choices are 'log' or 'lin'.
              xval_name (str): Name representing the axis. See GenerateContainer documentation
                  for options for the name.
  
          """
          self._set_grid_info('x', x_low, x_high, num_x, xscale, xval_name)
          return