| GDL Variables | Explanation |
|---|---|
| GDL_ZIP5_FILENAME | Name of ZIP5 GSB file |
| GDL_ZIP9_FILENAME | Name of US.Z9 file |
| GDL_TEMP_PATHNAME | Temp path |
| GDL_GEOSTAN_PATH |
Direct GDL to return data in the datum specified in GeoStan™ using GsSetDatum. GDL performs datum conversions on the address- and ZIP4-level error surfaces created with gdlGenerateErrorSurface.This value should be the same as the value used to initialize GeoStan. If this path is not set, GDL returns data in the NAD83 datum. |
GDL allows you to use an import utility located in the \GDL\64bit (for 64-bit OS installation) directory to retrieve attribute information. You must create a Spatial+ object (GSB) file and associated it with a GSA attribute file. These synchronized GSA and GSB files allow you to retrieve an unlimited amount of attribute information that is not currently available from the Name and Name2 fields. For instructions on using the import utility, see the Spatial+ Reference Manual.