EPSG stands for European Petroleum Survey Group. They publish a database of coordinate system information plus some very good related documents on map projections and datums. The Projection Engine uses a modified version of the EPSG model.
POSC is the Petrotechnical Open Software Corporation. It publishes open standards for the energy and petroleum industry. The POSC standard uses the EPSG model.
- Legacy Products
- ArcMap 8 x