Re: [rules-users] VCRP - Distance calculation in getMilliDistance

Please, take a look at http://en.wikipedia.org/wiki/Great-circle_distance In it, there are formulas based on latitude and longitude for arc length calculation. The problem is that they are "expensive" formulas based on trigonometric functions and could heavily impact performance, but they are a better aproximation than the cord length. mu -- View this message in context: http://drools.46999.n3.nabble.com/rules-users-VCRP-Distance-calculation-i... Sent from the Drools: User forum mailing list archive at Nabble.com.