I want to use GeoTools library to calculate geographic distance by using GeodeticCalculator (as mentioned in here http://docs.geotools.org/stable/userguide/library/referencing/calculator.html ).

Does this library use Vincenty formula, Haversine, or something else?

  • JTS is the underlying library for non-geographic geometries, if you asked about that it would be "neither, it's euclidean". I have removed JTS from your question is it was misleading to include. – bugmenot123 May 10 '19 at 11:15

GeoTools uses Karney's GeographicLib, if you check the code you'll see it uses the Geodesic.Direct method.

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