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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.
Examples:
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.
Notes:
NOTE: If you are using Bentley Map through one of the Civil Engineering products, you must first Activate Map in order for the Edit menu item to be available.