| rsl_changefield, | radar, from_field, to_field |
| rsl_changefield, | radar, FROM=from_field, TO=to_field |
| rsl_changefield, | volume, [TO=] to_field |
| radar | Radar structure, used in the first two calling forms above. |
| from_field | String specifying the field to be changed. This value may also be given using the FROM keyword. |
| to_field | The new field string. This value may also be specified using the TO keyword. |
| volume | A volume structure, used in the third calling form above. |
| FROM | The field to be changed. |
| TO | The new field string. |
rsl_changefield, radar, 'zd', 'dr'
Do the same using keywords:
rsl_changefield, radar, from='zd', to='dr'