geoDist {adespatial} | R Documentation |
Geodetic Distances from Latitude and Longitude
Description
Given two sets of points on the earth's surface in latitude, longitude form, returns the geodetic distances in meters between corresponding points.
Usage
geoDist(lat1, lon1, lat2, lon2, NAOK = TRUE)
Arguments
lat1 , lon1 , lat2 , lon2 |
Latitude and longitude co-ordinates for the two sets of points. |
NAOK |
Are |
Details
Uses a classic Fortran algorithm implementing a method that allows for the non-spherical shape of the earth. See comments in the Fortran code for the history of the implementation.
Value
numeric vector of distances, optionally including NA
values
if those are allowed and present in any of the coordinates.
Author(s)
John Chambers, Stanford Data Science, Stanford University (formerly at Bell Labs). Transfer of this function from SoDA to adespatial by Guillaume Guénard, with permission of John Chambers.
References
Vincenty,T. (1975). Direct and inverse solutions of geodesics on the ellipsoid with application of nested equations. Survey Review, vol. 23(176):88-94.