NOTE: This article is specific to V8i.
MicroStation includes the ability to define a geographic coordinate system, and Bentley Map provides the tools to create and edit a new geographic coordinate system (GCS), ellipsoid or datum in a user defined library. This new library can be shared with with all users.
Create a custom geographic library:
Since the delivered library can't be edited, the following steps are needed to create a custom GCS libary.
MS_GEOCOORDINATE_USERLIBRARIES = d:\data\ProjectABC.dty[Project ABC]
MS_GEOCOORDINATE_USERLIBRARIES = d:\data\ProjectABC.dty[Project ABC];d:\data\ProjectXYZ.dty[Project XYZ]
MS_GEOCOORDINATE_USERLIBRARIES = $(MS_GEOWSHOME)\data\ProjectABC[Project ABC]
To Create and Edit a User Coordinate System
Bentley Map does not let you edit any of the coordinate systems in the delivered library; rather, you copy an existing coordinate system, paste it in the user library and edit the copy.
If you are using Bentley Map V8i through one of the Civil Engineering products, you must first Activate Map in order for the Edit menu item to be available.