# geosphere v1.4-3

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## Spherical Trigonometry

Spherical trigonometry for geographic applications. That is, compute distances and related measures for angular (longitude/latitude) locations.

## Functions in geosphere

Name | Description | |

dist2gc | Cross Track Distance | |

bearingRhumb | Rhumbline direction | |

centroid | Centroid of spherical polygons | |

intermediate | Intermediate points on a great circle (sphere) | |

greatCircleBearing | Great circle | |

bearing | Direction of travel | |

antipode | Antipodes | |

finalBearing | Final direction | |

areaPolygon | Area of a longitude/latitude polygon | |

geomean | Mean location of sperhical coordinates | |

destPoint | Destination given bearing (direction) and distance | |

alongTrackDistance | Along Track Distance | |

gcLon | Longitude on a Great Circle | |

wrld | World countries | |

gcMaxLat | Highest latitude on a great circle | |

dist2Line | Distance between points and lines or the border of polygons. | |

horizon | Distance to the horizon | |

midPoint | Mid-point | |

onGreatCircle | Is a point on a given great circle? | |

geosphere-package | Geosphere | |

distHaversine | 'Haversine' great circle distance | |

randomCoordinates | Random or regularly distributed coordinates on the globe | |

daylength | Daylength | |

gcIntersect | Intersections of two great circles | |

distMeeus | 'Meeus' great circle distance | |

greatCircle | Great circle | |

distVincentySphere | 'Vincenty' (sphere) great circle distance | |

gcIntersectBearing | Intersections of two great circles | |

geodesic | geodesic and inverse geodesic problem | |

mercator | Mercator projection | |

distVincentyEllipsoid | 'Vincenty' (ellipsoid) great circle distance | |

distRhumb | Distance along a rhumb line | |

span | Span of polygons | |

perimeter | Compute the perimeter of a longitude/latitude polygon | |

makePoly | Add vertices to a polygon or line | |

distCosine | 'Law of cosines' great circle distance | |

distm | Distance matrix | |

distGeo | Distance on an ellipsoid (the geodesic) | |

plotArrows | Plot | |

destPointRhumb | Destination along a rhumb line | |

gcLat | Latitude on a Great Circle | |

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## Last month downloads

## Details

Type | Package |

Date | 2015-7-1 |

License | GPL (>= 3) |

LazyLoad | yes |

NeedsCompilation | yes |

Packaged | 2015-07-01 20:44:20 UTC; rhijmans |

Repository | CRAN |

Date/Publication | 2015-07-02 01:32:59 |

depends | base (>= 2.10.0) , R (>= 2.10.0) , sp |

suggests | methods , raster |

Contributors | Ed Williams, Chris Vennes, Robert Hijmans |

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