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Convert Geographic Coordinates to Cartesian Coordinates

Source: R/utils.R
lon_lat_to_cartesian.Rd

This function converts geographic coordinates, given as longitude and latitude in degrees, to Cartesian coordinates (x, y, z) assuming a spherical Earth model.

Usage

lon_lat_to_cartesian(lon, lat, R = 6371)

Arguments

lon

Numeric vector of longitudes in degrees.

lat

Numeric vector of latitudes in degrees.

R

Radius of the Earth in kilometers (default: 6371 km).

Value

A numeric matrix with three columns (x, y, z) representing Cartesian coordinates.

Examples

lon <- c(-122.4194, 0)
lat <- c(37.7749, 0)
lon_lat_to_cartesian(lon, lat)
#>              x         y        z
#> [1,] -2699.749 -4250.942 3902.625
#> [2,]  6371.000     0.000    0.000