dtDestination: dt destination

In SymbolixAU/spatial.data.table:

Description

Calculates the destination coordinates from a starting point, initial bearing and distance travelling along a (shortest distance) great circle arc

Usage

dtDestination(latFrom, lonFrom, distance, bearing, r = earthsRadius())

Arguments

latFrom	latitude from (in degrees)
lonFrom	longitude from (in degrees)
distance	distance in metres
bearing	from north (in degrees)
r	radius of earth in metres

Value

list of latitude and longitude coordinates at the destination

Examples

dtDestination(0, 0, earthsRadius(), 90)

n <- 10
set.seed(20170511)
lats <- -90:90
lons <- -180:180
b <- 0:360
dt <- data.table::data.table(lat = sample(lats, size = n, replace = T),
                             lon = sample(lons, size = n, replace = T),
                             bearing = sample(b, size = n, replace = T))
dt[, c("destinationLat", "destinationLon") := dtDestination(lat, lon, earthsRadius(), 90)]

SymbolixAU/spatial.data.table documentation built on May 9, 2019, 3:30 p.m.