dist_haversine: Calculates distance between geocoordinates: Haversine formula

In mike-decarlo/gcd: Great Circle Distance (GCD)

Description

dist_haversine takes inputs of two sets of coordinates in (radian values), one set fo reach location, and a boolean indicator of whether or not to return the results as kilometers (km = TRUE) or miles (km = FALSE). The output is the distance using the method of the Haversine formula, a more robust distance between two points on the surface of a sphere.

Usage

dist_haversine(lat1, lon1, lat2, lon2, type = "deg", km = TRUE)

Arguments

lat1	the latitude as radians of the first point
lon1	the longitude as radians of the first point
lat2	the latitude as radians of the second point
lon2	the longitude as radians of the second point
type	defaults to "deg", can also be "rad"
km	boolean argument for whether to return results as km (TRUE) or miles (FALSE)

Examples

# Input list of degree values
# Longitude values range between 0 and +-180 degrees
deg.lon <- runif(2, -180, 180)
# Latitude values range between 0 and +-90 degrees
deg.lat <- runif(2, -90, 90)

# Obtain measures of distnace
hav.mi <- dist_haversine(lon1 = deg.lon[1], lat1 = deg.lat[1]
  , lon2 = deg.lon[2], lat2 = deg.lat[2], km = FALSE)

mike-decarlo/gcd documentation built on Oct. 19, 2020, 9:16 a.m.