code: def set_minimum(min_freq=None, min_time=None, min_off=None, min_res=None,
                  min_angle=None):
      r
  
      global _min_freq, _min_time, _min_off, _min_res, _min_angle
  
      if min_freq is not None:
          _min_freq = min_freq
      if min_time is not None:
          _min_time = min_time
      if min_off is not None:
          _min_off = min_off
      if min_res is not None:
          _min_res = min_res
      if min_angle is not None:
          _min_angle = min_angle
docs: r"""
      Set minimum values of parameters.
  
      The given parameters are set to its minimum value if they are smaller.
  
      Parameters
      ----------
      min_freq : float, optional
          Minimum frequency [Hz] (default 1e-20 Hz).
      min_time : float, optional
          Minimum time [s] (default 1e-20 s).
      min_off : float, optional
          Minimum offset [m] (default 1e-3 m).
          Also used to round src- & rec-coordinates.
      min_res : float, optional
          Minimum horizontal and vertical resistivity [Ohm.m] (default 1e-20).
      min_angle : float, optional
          Minimum angle [-] (default 1e-10).
  
      Note
      ----
      set_minimum and get_minimum are derived after set_printoptions and
      get_printoptions from arrayprint.py in numpy.