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Package detail

geographiclib

geographiclib73.1kMITdeprecated1.52.2TypeScript support: included

This package has been split into geographic-geodesic + geographiclib-dms; use one or both of these instead of geographiclib.

JavaScript implementation of geodesic routines in GeographicLib

geodesics, geometry, geographiclib, geography, geodesic problem, direct geodesic problem, inverse geodesic problem, geodesic calculator

readme

Geodesic routines from GeographicLib

This library is a JavaScript implementation of the geodesic routines from GeographicLib. This solves the direct and inverse geodesic problems for an ellipsoid of revolution.

Licensed under the MIT/X11 License; see LICENSE.txt.

WARNING: Since version 2.x, this package has been separated into the geographiclib-geodesic and geographiclib-dms packages. geographiclib will be deprecated on 2023-05-01.

Installation

$ npm install geographiclib

Usage

In node, do

var GeographicLib = require("geographiclib");

Documentation

Full documentation is provided at https://geographiclib.sourceforge.io/JavaScript/1.52.2/index.html.

Examples

var GeographicLib = require("geographiclib"),
    geod = GeographicLib.Geodesic.WGS84, r;

// Find the distance from Wellington, NZ (41.32S, 174.81E) to
// Salamanca, Spain (40.96N, 5.50W)...
r = geod.Inverse(-41.32, 174.81, 40.96, -5.50);
console.log("The distance is " + r.s12.toFixed(3) + " m.");
// This prints "The distance is 19959679.267 m."

// Find the point 20000 km SW of Perth, Australia (32.06S, 115.74E)...
r = geod.Direct(-32.06, 115.74, 225, 20000e3);
console.log("The position is (" +
            r.lat2.toFixed(8) + ", " + r.lon2.toFixed(8) + ").");
// This prints "The position is (32.11195529, -63.95925278)."

Authors