JohnnyG said:Laden or unladen crow?
JohnnyG said:Nope, it was a rubbish joke
No, that only works for flat surfaces. The surface of the earth is very definitely curved. The page Haircut linked to has the correct formula for distances on the surface of a sphere.Ricochet J said:Isn't it:
AC = sqrt ((A-B)sq+ (B-C)sq)
Where sqrt stands for square root and sq stands for squared.
The Earth is a non-Euclidean surface though so you can't do that.Ricochet J said:Isn't it:
AC = sqrt ((A-B)sq+ (B-C)sq)
Where sqrt stands for square root and sq stands for squared.
Works if you happen to know the angle between the two coordinates you're interested. Unfortunately, unless they're at the same latitude or longitude then you have to do some extra maths first. Much easier just to use the analogue of Pythagoras' theorem for spherical surfaces.KaHn said:Surely just use the length of an arc
L=(theta)*r
Where r = radius of the earth and the (theta is the angle between the longs and lats in radians.
KaHn
Arcade Fire said:Works if you happen to know the angle between the two coordinates you're interested. Unfortunately, unless they're at the same latitude or longitude then you have to do some extra maths first. Much easier just to use the analogue of Pythagoras' theorem for spherical surfaces.
Azagoth said:African or European?
Haircut said: