# geosphere v1.2-21

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## Spherical Trigonometry

Spherical trigonometry for geographic applications

## Functions in geosphere

Name | Description | |

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

bearing | Direction of travel | |

distRhumb | Distance along a rhumb line | |

gcIntermediate | Intermediate points on a great circle | |

greatCircleBearing | Great circle | |

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

destPoint | Destination given bearing (direction) and distance, when following a Great Circle | |

midPoint | Mid-point | |

span | Span of polygons | |

dist2gc | Cross Track Distance | |

wrld | World countries | |

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

gcLon | Longitude on a Great Circle | |

alongTrackDistance | Along Track Distance | |

areaPolygon | Compute the areaPolygon of a polygon | |

perimeter | Compute the perimeter of a polygon | |

finalBearing | Final direction | |

distm | Distance matrix | |

gcIntersectBearing | Intersections of two great circles | |

plotArrows | Plot | |

greatCircle | Great circle | |

antipode | Antipodes | |

destPointRhumb | Destination along a rhumb line | |

centroid | Centroid of spherical polygons | |

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

distMeeus | 'Meeus' great circle distance | |

distHaversine | 'Haversine' great circle distance | |

gcLat | Latitude on a Great Circle | |

makePoly | Add vertices to a polygon or line | |

bearingRhumb | Rhumbline direction | |

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

daylength | Daylength | |

gcMaxLat | Highest latitude on a great circle | |

geosphere-package | Geosphere | |

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

gcIntersect | Intersections of two great circles | |

horizon | Distance to the horizon | |

mercator | Mercator projection | |

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## Last month downloads

## Details

Type | Package |

Date | 18-May-2011 |

License | GPL |

LazyLoad | yes |

Repository | CRAN |

Repository/R-Forge/Project | geosphere |

Repository/R-Forge/Revision | 143 |

Date/Publication | 2011-05-25 06:36:34 |

Packaged | 2011-05-19 21:00:32 UTC; rforge |

depends | base (>= 2.10) , methods , R (>= 2.10) |

suggests | raster , sp |

Contributors | Ed Williams, Chris Vennes, Robert Hijmans |

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