GreatDist {RSEIS}R Documentation

Distance Along Great Circle Arc

Description

Distance Along Great Circle Arc in degrees, kilometers

Usage

GreatDist(LON1, LAT1, LON2, LAT2, EARTHRAD= 6371)

Arguments

LON1 Longitude, point1
LAT1 Latitude, point1
LON2 Longitude, point2
LAT2 Latitude, point2
EARTHRAD optional earth radius, default = 6371

Value

LIST:

drad distance in radians
ddeg distance in degrees
dkm distance in kilometers

Author(s)

Jonathan M. Lees <jonathan.lees@unc.edu>

Examples


##########   get distance between London, England and Santiago, Chile
london = c(51.53333, -0.08333333)
santiago = c(-33.46667, -70.75)

GreatDist(london[2], london[1], santiago[2], santiago[1])


[Package RSEIS version 2.1-4 Index]