lan_idf::get_global_properties

Source: idf/lan_idf/lan_idf__get_global_properties.pro

 lan_idf::get_global_properties
        Get the global properties of an IDF dataset

 Usage:
        value = idfid->get_global_properties(<key>)

 Keywords:
        version         Return the version number of the IDF file.
        background_time Return the JD of the switch of backgrounds.
        have_background Return true if backgrounds are present in the
                        dataset, false otherwise.
        instrument      Return the name of the instrument for which
                        this is an IDF

 History:
        Original: 22/11/99; SJT
        Added instrument key: 22/6/01; SJT