dtDestination: dt destination

In SymbolixAU/spatialdatatable:

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)

Arguments

latFrom	latitude from (in degrees)
lonFrom	longitude from (in degrees)
distance	distance in metres
bearing	from north (in degrees)

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, 90)]

SymbolixAU/spatialdatatable documentation built on May 6, 2019, 11:20 a.m.