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    geographiclibpublic

    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.

    Installation

    $ npm install geographiclib

    Usage

    In node, do

    var GeographicLib = require("geographiclib");

    Documentation

    Full documentation is provided at https://geographiclib.sourceforge.io/1.49/js/.

    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)...
    = 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)...
    = 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

    install

    npm i geographiclib

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    version

    1.49.0

    license

    MIT

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