haversine: Calculate Haversine Distance Between Two Points on Earth

In rSDI: Spatial Dispersion Index (SDI) Family of Metrics for Spatial/Geographic Networks

Calculate Haversine Distance Between Two Points on Earth

Description

This function calculates the great-circle distance between two points on the Earth's surface, given their longitude and latitude in decimal degrees. It uses the Haversine formula, which accounts for the Earth's curvature.

Usage

haversine(lon1, lat1, lon2, lat2, R = 6371)

Arguments

lon1	Longitude of the first point in decimal degrees.
lat1	Latitude of the first point in decimal degrees.
lon2	Longitude of the second point in decimal degrees.
lat2	Latitude of the second point in decimal degrees.
R	The radius of the Earth in kilometers.

Value

The distance between the two points in kilometers.

Examples

haversine(-73.9851, 40.7580, -0.1278, 51.5074)
# Distance between NY City and London.

rSDI documentation built on Aug. 23, 2025, 1:11 a.m.