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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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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[](http://www.rdocumentation.org/packages/geosphere)