gcd_vif {GeoRange}

Calculates the geodesic distance between two points specified by latitude/longitude using Vincenty inverse formula for ellipsoids

Description

Calculates the geodesic distance between two points specified by latitude/longitude using Vincenty inverse formula for ellipsoids

Usage

gcd_vif(long1, lat1, long2, lat2)

Arguments

long1

- Longitudinal value of first point in decimal degrees

lat1

- Latitudinal value of first point in decimal degrees

long2

- Longitudinal value of second point in decimal degrees

lat2

- Latitudinal value of second point in decimal degrees

Value

Returns the distance between two points on the Earth in kilometers

References

[1] Adapted from http://www.r-bloggers.com/great-circle-distance-calculations-in-r/

Examples

long1<-22
lat1<-44
long2<-52
lat2<-51
gcd_vif(long1,lat1,long2,lat2)