Last data update: 2014.03.03

 R: Great circle
greatCircleBearingR Documentation

Great circle

Description

Get points on a great circle as defined by a point and an initial bearing

Usage

greatCircleBearing(p, brng, n=360)

Arguments

p

longitude/latitude of a single point. Can be a vector of two numbers, a matrix of 2 columns (first one is longitude, second is latitude) or a SpatialPoints* object

brng

bearing

n

The requested number of points on the great circle

Value

A matrix of points, or a list of matrices (e.g., if multiple bearings are supplied)

Author(s)

Robert Hijmans based on formulae by Ed Williams

References

http://williams.best.vwh.net/avform.htm#Int

Examples

greatCircleBearing(c(5,52), 45, n=12)

Results


Created & Maintained by Osamu Ogasawara (osamu.ogasawara@gmail.com) and IMSBIO