geosphere v1.4-3


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by Robert Hijmans

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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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

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