Re: [rules-users] VCRP - Distance calculation in getMilliDistance
On 27/02/2014, Marcus Uerlings <muerlings(a)gmail.com> wrote:
I´ve learned from a person that works with georeference that a good
aproximation in calculating distances from latitude and longitude is to
multiply the Euclidean result by "111.1".
This "magic number" will give the approximate distance in kilometers and
then the final soft score will show the minimum distance in "km" and not in
"fuel" (although they are related).
This is based on 360° being equal to the length of the equator, and
for longitudes and latitudes down there it works well enough. But it's
already grossly inaccurate for east-to-west distances not farther
north (or south) than N +/-45°.
-W