Description Usage Arguments Value Author(s) References See Also Examples

Get the final direction (bearing) when arriving at `p2`

after starting from `p1`

and following the shortest path on an ellipsoid (following a geodetic) or on a sphere (following a great circle).

1 | ```
finalBearing(p1, p2, a=6378137, f=1/298.257223563, sphere=FALSE)
``` |

`p1` |
longitude/latitude of point(s). Can be a vector of two numbers, a matrix of 2 columns (first column is longitude, second column is latitude) or a SpatialPoints* object |

`p2` |
as above |

`a` |
major (equatorial) radius of the ellipsoid. The default value is for WGS84 |

`f` |
ellipsoid flattening. The default value is for WGS84 |

`sphere` |
logical. If |

A vector of directions (bearings) in degrees

This function calls GeographicLib code by C.F.F. Karney

C.F.F. Karney, 2013. Algorithms for geodesics, J. Geodesy 87: 43-55. https://dx.doi.org/10.1007/s00190-012-0578-z. Addenda: http://geographiclib.sf.net/geod-addenda.html. Also see http://geographiclib.sourceforge.net/

1 2 |

geosphere documentation built on July 21, 2018, 3 p.m.

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