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

A rhumb line (loxodrome) is a path of constant bearing (direction), which crosses all meridians at the same angle.

1 | ```
distRhumb(p1, p2, r=6378137)
``` |

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

`p2` |
as above; or missing, in which case the sequential distance between the points in p1 is computed |

`r` |
radius of the earth; default = 6378137 m |

Rhumb (from the Spanish word for course, 'rumbo') lines are straight lines on a Mercator projection map. They were used in navigation because it is easier to follow a constant compass bearing than to continually adjust the bearing as is needed to follow a great circle, even though rhumb lines are normally longer than great-circle (orthodrome) routes. Most rhumb lines will gradually spiral towards one of the poles.

distance in units of r (default=meters)

Robert Hijmans and Chris Veness

http://www.movable-type.co.uk/scripts/latlong.html

`distCosine, distHaversine, distVincentySphere, distVincentyEllipsoid`

1 |

```
Loading required package: sp
[1] 1546621
```

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