Hi, > > Sounds useful to me. But i am not sure its so easy given that the length > of a degree is changing, but there may be some formulas out there (even web > pages) that calculate great circle distances ... mhm... i think somewhere i > even used such, once. > > Cheers, > Stefan > > Yes, it is based on great circles computation. I used formula from this rather complete page : https://www.movable-type.co.uk/scripts/latlong.html
Nicolas
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