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GeoPS allows the user to communicate with a GPS Logger. Various types of loggers are supported
- Get information from the logger.
- Get a directory of flights, recorded by the logger.
- Download one or more flight-logs from the logger.
- Download Routes and waypoints if they are stored in the logger.
- Create, modify and delete Routes and waypoints.
- Use drag and drop to create your own Routes.
- If the logger supports that: Upload routes and waypoints to the logger.
- Download the Declaration from the logger into your Macintosh.
- Modify the declaration.
- Upload the declaration to your logger.
- Import waypoints from a dbt file or a .cup file, like from Worldwide Soaring Turnpoint Exchange
- Export waypoints and routes
- Distances (and length of Routes) are calculated using the Vincenty algorithm, which offers extremely high accuracy.
The routine for this used by kind permission from Chris Veness.