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Main Interface

Interaction with the NASA Ames PAH IR Spectroscopic Database is organized around the 'AmesPAHdbIDLSuite'-object, which is created as shown below.

pahdb = OBJ_NEW('AmesPAHdbIDLSuite')

Alternatively, the 'AmesPAHdbIDLSuite'-object can be created through the implicit object creation method as shown below.

pahdb = AmesPAHdbIDLSuite()

In case the system/IDL variable for the default database is not set, or one wishes to load another version or type of database, the 'Filename'-keyword can be specified.

pahdb = OBJ_NEW('AmesPAHdbIDLSuite', Filename='/path/to/xml-file')

By default the AmesPAHdbIDLSuite will cache the parsed database XML-file for faster subsequent access. However, this behavior can be disabled by setting the 'Cache'-keyword to '0'.

pahdb = OBJ_NEW('AmesPAHdbIDLSuite', Cache=0)

When parsing the database XML-file, the AmesPAHdbIDLSuite will try and validate its content against a URL-linked Schema. However, validation can be disabled by setting the 'Check'-keyword to '0'. This can be useful when not having an active internet connection.

pahdb = OBJ_NEW('AmesPAHdbIDLSuite', Check=0)

It is possible to combine the different keywords.

pahdb = OBJ_NEW('AmesPAHdbIDLSuite', Filename='path/to/xml-file', $
                                     Cache=0, Check=0)

When finished with the AmesPAHdbIDLSuite the object should be destroyed.

OBJ_DESTROY,pahdb