GeoCalc contains EPSG v8.9 support (European Petroleum Survey Group) and a direct connect to the OGP's online version of the EPSG Database hosted on Galdos INdicio 2.7. The incorporation of EPSG v8.9 added hundreds of new projected, geodetic, and geocentric, coordinate systems, many new datum shifts, and many new vertical coordinate systems and transformations over v8.2.
The GeoCalc Class Library includes read and write functions for the storage and retrieval of geodetic objects within an XML database. Geodetic objects including ellipsoids, datums, units, and coordinate systems are created and maintained in this database. For your convenience, Blue Marble Geographics supplies a comprehensive master geodetic database that you may ship with your application.
For your convenience, the GeoCalc Class Library supplies the UTM (Universal Transverse Mercator) grid, State Plane Coordinate System of 1927, State Plane Coordinate System of 1983, and many other coordinate system definitions. Furthermore, GeoCalc allows you to define any other coordinate systems you may wish to use. With GeoCalc, developers and users can use a wide range of projections and datums to define a custom system. Over 75 projection methods are contained in this software, and examples of equal-area, azimuthal, cylindrical, polyconic, and stereographic definitions are also available.
Included Common Coordinate Systems:
NAD27 to NAD83 conversions (or vice versa) with the United States and associated territories are performed using exactly the same algorithm and data files as used by the National Geodetic Service's NADCON program. Results are numerically identical to those of NADCON. Version 2.0 of the Canadian National Transformation is fully supported for conversion within Canada.
NAD83 to HPGN (NAD83/91 or HARN) conversions (or vice versa) are performed using the exact same algorithm and data files used by, and results are numerically identical to, the National Geodetic Service's NADCON program.