great.circle.distance.f: Computes great circle distance
Description
This is an ancillary function to mat.dissim that calculates distance in meters on a sphere between two points of longitude/latitude
Usage
great.circle.distance.f(cLonLat, oLonLat)
Arguments
cLonLat
Vector: with two values, one of longitude and the other latitude.
oLonLat
Vector: with two values, one of longitude and the other latitude.
Value
A single value of distance in meters.
Details
The calculation is based on a sphere of 6374 km diamater. The user can change this for other spheres or earth models.
References
SAWADA, M. 2006. An open-source implementation of the modern analog technique (MAT) within the R computing environment. Computers and Geosciences, Vol 32(6):818-833, DOI information: 10.1016/j.cageo.2005.10.008