geo_dist: Geographical Distances

In BillVenables/WWRGraphics: Traditional Graphics Enhancements for WWR

Description

Great circle shortest distances in kilometres between two sets of points on the globe, or distances between all pairs of locations

Usage

geo_dist(lat1, lon1, lat2, lon2)

geo_dist_pairwise(lat1, lon1, lat2 = lat1, lon2 = lon1)

Arguments

lat1, lon1	Coordinates of origins in decimal degrees
lat2, lon2	Coordinates of destinations in decimal degrees

Value

A numeric vector of distances, in kilometers, or a matrix of such distances

Examples

Cns_Bris_Syd_Mel <- data.frame(lat = c(-16.9186, -27.4698, -33.8688, -37.8136),
                               lon = c(145.7781, 153.0251, 151.2093, 144.9631))
with(Cns_Bris_Syd_Mel, geo_dist(lat[1], lon[1], lat[-1], lon[-1]))
with(Cns_Bris_Syd_Mel, geo_dist_pairwise(lat, lon))

BillVenables/WWRGraphics documentation built on Feb. 1, 2021, 12:13 p.m.