Can I create my own custom datums within the Geographic Calculator?
Certainly, the Geographic Calculator supports custom datums based on Molodensky, Bursa/Wolfe, NADCON, HPGN/HARN, and the Canadian National Transformation datum transformation methods. You simply need to know the required parameters for your custom datum. The Geographic Calculator provides a simple datum designer that provides an interface for entering the required parameters for your custom datum. All datum parameters are stored in an external coordinate conversion database, an ASCII file that can be shared between users and different Blue Marble applications.
