fnLatLon.bearing ( lat1 ; lon1 ; lat2 ; lon2 )
Calculates initial bearing between two points on Earth's surface.
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Michael George Consulting
Function definition: (Copy & paste into FileMaker's Edit Custom Function window)
This calculates the initial bearing for following a great-circle arc from a starting Latitude & Longitude to a destination Latitude & Longitude.
Please note that this function requires the Atan2 function that I have also listed on this site.
Note: these functions are not guaranteed or supported by BrianDunning.com. Please contact the individual developer with any questions or problems.