@gro_tsen paper -> https://t.co/9ekNGTvVHd The definition change is "small" but it tends to matter a lot when dealing with distances 40-49% the circumference of the chosen "geodesic"/"great circle" (yes they're not the same thing) by +/-10^-7
2点の緯度経度から距離を計算する方法としては,「Vincenty法」が最も精度が良いと思っていたけど, 「Karney(2013)による方法」のほうが良いのか.知らなかった. https://t.co/kzbATK3iRw
@shitsyndrome Check out the abstract! https://t.co/O1UwZSxZX6
GeographicLibが参照した論文 : Algorithms for geodesics https://t.co/bxhXfTD5Sj
Algorithms for geodesics https://t.co/AcHem6Cbqt
As I mentioned- a huge amount going on under the bonnet with modern location intelligence. Respect! Incidentally, I once had a summer job at Wang Computers (in the post-room!) https://t.co/b1qOy9aOME
@incanus77 But you're sure Apple's isn't Vincenty with say WGS-84 ellipsoid? Karney offers an ellipsoidal method too: http://t.co/UyQdAomSYb
Algorithms for geodesics. (arXiv:1109.4448v1 [physics.geo-ph]): Algorithms for the… http://t.co/69xtyhL8