geosphere v1.2-15


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by Robert Hijmans

Spherical Trigonometry

Spherical trigonometry for geographic applications

Functions in geosphere

Name Description
centroid Centroid of spherical polygons
distm Distance matrix
plotArrows Plot
destPointRhumb Destination along a rhumb line
bearing Direction of travel
gcLon Longitude on a Great Circle
mercator Mercator projection
greatCircleBearing Great circle
distCosine 'Law of cosines' great circle distance
midPoint Mid-point
daylength Daylength
distVincentySphere 'Vincenty' (sphere) great circle distance
gcIntermediate Intermediate points on a great circle
alongTrackDistance Along Track Distance
antipode Antipodes
makePoly Add vertices to a polygon or line
geosphere-package Geosphere
gcIntersectBearing Intersections of two great circles
randomCoordinates Random or regularly distributed coordinates on the globe
distVincentyEllipsoid 'Vincenty' (ellipsoid) great circle distance
wrld World countries
horizon Distance to the horizon
distHaversine 'Haversine' great circle distance
gcLat Latitude on a Great Circle
distRhumb Distance along a rhumb line
gcIntersect Intersections of two great circles
onGreatCircle Is a point on a given great circle?
span Span of polygons
areaPolygon Compute the areaPolygon of a polygon
destPoint Destination given bearing (direction) and distance, when following a Great Circle
dist2Line Distance between points and lines or (the border of) polygons.
crossTrackDistfance Cross Track Distance
finalBearing Final direction
greatCircle Great circle
gcMaxLat Highest latitude on a great circle
bearingRhumb Rhumbline direction
perimeter Compute the perimeter of a polygon
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Type Package
Date 4-November-2010
License GPL
LazyLoad yes
Packaged 2010-11-04 20:11:21 UTC; rhijmans
Repository CRAN
Date/Publication 2010-11-04 20:26:14

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