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 FileMaker Pro Custom Functions

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fnLatLon.bearing ( lat1 ; lon1 ; lat2 ; lon2 )

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Michael George, Michael George Consulting
mailto:mgeorge@coresupport.com

Calculates initial bearing between two points on Earth's surface.

Sample Input:
fnLatLon.bearing ( 45.0638888 ; -64.1808333 ; 44.6205555 ; -65.7583333 )
Sample Output:
248.936


 Then copy & paste into FileMaker Advanced's Edit Custom Function window.

Description:

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.

This is my Custom Function and I want to edit it

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