This page illustrates implementations of the examples from www.navlab.net/nvector. Values are chosen to match those used in nvector.readthedocs.org.
import LatLon from 'latlon-nvector-ellipsoidal.js'; var a = new LatLon(1, 2, 3); // defaults to WGS-84 var b = new LatLon(4, 5, 6); var delta = a.deltaTo(b); // [N:331730.863,E:332998.501,D:17398.304] var dist = delta.length; // 470357.384 m var brng = delta.bearing; // 45.109° var elev = delta.elevation; // -2.1198°
import LatLon, { Nvector, Ned } from 'latlon-nvector-ellipsoidal.js'; var n = new Nvector(1, 2, 3, 400, LatLon.datums.WGS72); // [0.267,0.535,0.802,400.000] var b = n.toLatLon(); // 53.301°N, 063.435°E +400.000m var delta = new Ned(3000, 2000, 100); // [N:3000,E:2000,D:100] var c = b.destinationPoint(delta); // 53.328°N, 063.465°E +299.138m
import LatLon, { Cartesian } from 'latlon-nvector-ellipsoidal.js'; var c = new Cartesian(0.9*6371e3, -1.0*6371e3, 1.1*6371e3); var p = c.toLatLon(); // 39.379°N, 048.013°W +4702059.834m
import LatLon, { Cartesian } from 'latlon-nvector-ellipsoidal.js'; var p = new LatLon(1, 2, 3); var c = p.toCartesian(); // [6373290.277,222560.201,110568.827]
import LatLon from 'latlon-nvector-spherical.js'; var a = new LatLon(88, 0); var b = new LatLon(89, -170); var dist = a.distanceTo(b); // 332.5 km
import LatLon from 'latlon-nvector-spherical.js'; var points = [ new LatLon(90, 0), new LatLon(60, 10), new LatLon(50, -20), ]; var mean = LatLon.meanOf(points); // 67.2362°N, 006.9175°W
import LatLon from 'latlon-nvector-spherical.js'; var a = new LatLon(80, -90); var b = a.destinationPoint(1000, 200); // 79.9915°N, 090.0177°W
import LatLon from 'latlon-nvector-spherical.js'; var a1 = new LatLon(10, 20); var a2 = new LatLon(30, 40); var b1 = new LatLon(50, 60); var b2 = new LatLon(70, 80); var c = LatLon.intersection(a1, a2, b1, b2); // 40.3186°N, 055.9019°E
import LatLon from 'latlon-nvector-spherical.js'; var a1 = new LatLon( 0, 0); var a2 = new LatLon(10, 0); var b = new LatLon(1, 0.1); var c = b.crossTrackDistanceTo(a1, a2); // 11.12 km