GreatDist: Distance Along Great Circle Arc

In RSEIS: Seismic Time Series Analysis Tools

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 <[e-mail]>

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])

RSEIS documentation built on Sept. 13, 2024, 1:09 a.m.