Converts geodetic coordinates to an n-vector.
Geodetic longitude in radians.
Geodetic latitude in radians.
Coordinate frame in which the n-vector is decomposed.
An n-vector.
https://github.com/FFI-no/n-vector/blob/82d749a67cc9f332f48c51aa969cdc277b4199f2/nvector/lat_long2n_E.m
Converts geodetic coordinates to an n-vector.