Synthesize command line parameters

        e.g. [ ['struct.cssr'], ['struct.vsa'], [2.4]]

def cmdline_params(self, structure_file_name, surface_sample_file_name):
        """Synthesize command line parameters

        e.g. [ ['struct.cssr'], ['struct.vsa'], [2.4]]
        """
        parameters = []

        parameters += [structure_file_name]
        parameters += [surface_sample_file_name]

        pm_dict = self.get_dict()

        # replace sampling method string by number
        pm_dict['sampling_method'] = sampling_methods[pm_dict[
            'sampling_method']]

        # order matters here!
        for key in [
                'accessible_surface_area',
                'sampling_density',
                'output_surface',
                'target_volume',
                'sampling_method',
                'cubic_target',
        ]:
            parameters.append(pm_dict[key])

        return map(str, parameters)