def make_ring_filename(self, source_name, ring, galprop_run):
        """ Make the name of a gasmap file for a single ring

        Parameters
        ----------

        source_name : str
            The galprop component, used to define path to gasmap files
        ring : int
            The ring index
        galprop_run : str
            String identifying the galprop parameters
        """
        format_dict = self.__dict__.copy()
        format_dict['sourcekey'] = self._name_factory.galprop_ringkey(source_name=source_name,
                                                                      ringkey="ring_%i" % ring)
        format_dict['galprop_run'] = galprop_run
        return self._name_factory.galprop_gasmap(**format_dict)
Make the name of a gasmap file for a single ring

        Parameters
        ----------

        source_name : str
            The galprop component, used to define path to gasmap files
        ring : int
            The ring index
        galprop_run : str
            String identifying the galprop parameters