Latitude-Longitude Distances

Calculate distance between points on the globe

Usage

LatLonDistances(lat1, lon1, lat2, lon2, distance.units = "miles")

Arguments

lat1

latitude value for the first set of latitude-longitude coordinates

lon1

longitude value for the first set of latitude-longitude coordinates e.g., c(lat1, lon1), c(42.331177, -83.046023) ## Detroit, Michigan

lat2

latitude value for the second set of latitude-longitude coordinates

lon2

longitude value for the second set of latitude-longitude coordinates e.g., c(lat2, lon2), c(42.737652, -84.483788) ## East Lansing, Michigan

distance.units

string indicating if the resulting distance should be miles or kilometers expressed as "km"; default is "miles".

Value

distance between the two points taking into consideration the curvature of the earth

Details

long description with what the function does and returns

Author

Emilio Xavier Esposito emilio.esposito@gmail.com (https://github.com/emilioxavier)

Examples

point1 <- c(42.331177, -83.046023)  ## Detroit, Michigan
point2 <- c(42.737652, -84.483788)  ## East Lansing, Michigan

LatLonDistances(lat1=point1[1], lon1=point1[2],
                lat2=point2[1], lon2=point2[2], distance.units="miles")
#> [1] 78.48957
# 78.48957

LatLonDistances(lat1=42.331177, lon1=-83.046023,
                lat2=42.737652, lon2=-84.483788, distance.units="miles")
#> [1] 78.48957
# 78.48957