docs: def get_arrays(self, type_img):
          ''' Return arrays the region of interest
  
          Args:
              type_img (str): Either lola or wac.
  
          Returns:
              A tupple of three arrays ``(X,Y,Z)`` with ``X`` contains the
              longitudes, ``Y`` contains the latitude and ``Z`` the values
              extracted for the region of interest.
  
          Note:
              The argument has to be either lola or wac. Note case sensitive.
              All return arrays have the same size.
  
              All coordinates are in degree.
          '''
  
          if type_img.lower() == 'lola':
              return LolaMap(self.ppdlola, *self.window, path_pdsfile=self.path_pdsfiles).image()
          elif type_img.lower() == 'wac':
              return WacMap(self.ppdwac, *self.window, path_pdsfile=self.path_pdsfiles).image()
          else:
              raise ValueError('The img type has to be either "Lola" or "Wac"')