The Geographic Determination Library (GDL) is designed to be used in conjunction with Precisely's address standardization and geocoding library, GeoStan. By accessing the actual run-time values created by GeoStan, GDL can generate a dynamic geo-variance buffer around the geocode. From there GDL can then perform several spatial comparison operations to generate a numeric confidence value. GDL does not process Canadian addresses.
The GDL library functions and procedures are accessible via a library, DLL, or copybook depending on the platform on which you are developing.
GDL is also distributed as an object module for z/OS users and provides variables in working storage for calls to GDL.
Presented below is a quick overview of the geo-variance buffer generation process and a description of the types of analyzes along with their return values. This overview is intended to provide the reader with a summary and should not be taken as a complete list of the possible uses for GDL.