7 ms·

And when Haversine isn't accurate enough: Vincenty's method. https://en.wikipedia.org/wiki/Vincenty%27s_formulae https://en.wikipedia.org/wiki/Vincenty%27s_form

by bisrig 7y ago

And when Haversine isn't accurate enough: Vincenty's method. https://en.wikipedia.org/wiki/Vincenty%27s_formulae https://en.wikipedia.org/wiki/Vincenty%27s_formulae Also, another reference for both methods with calculators! Vicenty: http://www.movable-type.co.uk/scripts/latlong-vincenty.html http://www.movable-type.co.uk/scripts/latlong-vincenty.html Haversine: http://www.movable-type.co.uk/scripts/latlong.html http://www.movable-type.co.uk/scripts/latlong.html

shittyadmin 7y ago
If you need a library to do this, check out GeographicLib. It's written by C. F. F. Karney the same guy who developed an algorithm and wrote a scientific paper about improving Vincenty's formulae for performance and fixing issues at nearly antipodal points. It has good implementations in C++, C# and Javascript. https://geographiclib.sourceforge.io/html/ https://geographiclib.sourceforge.io/html/
- damian2000 7y ago
  Minor point but I know c# has a GeoCoordinate class into the framework Dlls. It also contains methods to calculate distance between points. Many .net Devs I've worked with didn't know about it. I think it came out first in .net 4.0.