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<div class="title">Implementations in other languages </div> </div>
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<div class="textblock"><center> Back to <a class="el" href="organization.html">Code organization</a>. Forward to <a class="el" href="geoid.html">Geoid height</a>. Up to <a class="el" href="index.html#contents">Contents</a>. </center><p>Various subsets of <a class="el" href="namespaceGeographicLib.html" title="Namespace for GeographicLib. ">GeographicLib</a> have been implemented in other languages. In some cases, these are available as independent packages. Here is a summary:</p><ul>
<li>C (geodesic routines): <a href="C/index.html">documentation</a>, also included with recent versions of <a href="http://proj.org">proj.4</a>;</li>
<li>Fortran (geodesic routines): <a href="Fortran/index.html">documentation</a>;</li>
<li>Java (geodesic routines): <a href="https://repo1.maven.org/maven2/net/sf/geographiclib/GeographicLib-Java/">Maven Central package</a>, <a href="java/index.html">documentation</a>;</li>
<li>JavaScript (geodesic routines): <a href="https://www.npmjs.com/package/geographiclib">npm package</a>, <a href="js/index.html">documentation</a>;</li>
<li>Python (geodesic routines): <a href="https://pypi.python.org/pypi/geographiclib">PyPI package</a>, <a href="python/index.html">documentation</a>;</li>
<li>MATLAB/Octave (geodesic and some other routines): <a href="https://www.mathworks.com/matlabcentral/fileexchange/50605">MATLAB Central package</a>, <a href="https://www.mathworks.com/matlabcentral/fileexchange/50605/content/Contents.m">documentation</a>;</li>
<li>C# (.NET wrapper for C++ library): <a href="NET/index.html">documentation</a>.</li>
</ul>
<p>Some more details are available in the following sections</p><ul>
<li><a class="el" href="other.html#c-fortran">C and Fortran implementation</a></li>
<li><a class="el" href="other.html#java">Java implementation</a>.</li>
<li><a class="el" href="other.html#javascript">JavaScript implementation</a>.</li>
<li><a class="el" href="other.html#python">Python implementation</a>.</li>
<li><a class="el" href="other.html#matlab">MATLAB and Octave implementations</a>.</li>
<li><a class="el" href="other.html#dotnet">.NET wrapper</a>.</li>
<li><a class="el" href="other.html#maxima">Maxima routines</a>.</li>
</ul>
<h1><a class="anchor" id="c-fortran"></a>
C and Fortran implementation</h1>
<p>This includes the geodesic capabilities of <a class="el" href="namespaceGeographicLib.html" title="Namespace for GeographicLib. ">GeographicLib</a>. The source code is in the directories <code>legacy/C</code> and <code>legacy/Fortran</code>. These are intended for use in old codes written in these languages and should work any reasonably modern compiler. These implementations are entirely self-contained and do not depend on the rest of <a class="el" href="namespaceGeographicLib.html" title="Namespace for GeographicLib. ">GeographicLib</a>. Sample main programs to solve the direct and inverse geodesic problems and to compute polygonal areas are provided.</p>
<p>The C library is also included as part of <a href="http://proj.org">proj.4</a> starting with version 4.9.0, where it is used as the computational backend for <a href="https://github.com/OSGeo/proj.4/wiki/Mangeod">geod(1)</a>.</p>
<p>For documentation, see</p><ul>
<li><a href="C/index.html">C library for geodesics</a>,</li>
<li><a href="Fortran/index.html">Fortran library for geodesics</a>.</li>
</ul>
<p>It is also possible to call the C++ version of <a class="el" href="namespaceGeographicLib.html" title="Namespace for GeographicLib. ">GeographicLib</a> directly from C and the directory <code>wrapper/C</code> contains a small example, which converts heights above the geoid to heights above the ellipsoid.</p>
<h1><a class="anchor" id="java"></a>
Java implementation</h1>
<p>This includes the geodesic capabilities of <a class="el" href="namespaceGeographicLib.html" title="Namespace for GeographicLib. ">GeographicLib</a>. The source code is in the directory <code>java</code>. This implementation is entirely self-contained and does not depend on the rest of <a class="el" href="namespaceGeographicLib.html" title="Namespace for GeographicLib. ">GeographicLib</a>. Sample main programs to solve the direct and inverse geodesic problems and to compute polygonal areas are provided.</p>
<p>This package is available on Maven Central; so if you're using Apache Maven as your build system, you can use this package by including the dependency</p><pre class="fragment"> <dependency>
<groupId>net.sf.geographiclib</groupId>
<artifactId>GeographicLib-Java</artifactId>
<version>1.46</version>
</dependency></pre><p> in your <code>pom.xml</code>.</p>
<p>For documentation, see</p><ul>
<li><a href="java/index.html">Java library for geodesics</a>.</li>
</ul>
<h1><a class="anchor" id="javascript"></a>
JavaScript implementation</h1>
<p>This includes the geodesic capabilities of <a class="el" href="namespaceGeographicLib.html" title="Namespace for GeographicLib. ">GeographicLib</a>. The source code is in the directory <code>js</code>. This implementation is entirely self-contained and does not depend on the rest of <a class="el" href="namespaceGeographicLib.html" title="Namespace for GeographicLib. ">GeographicLib</a>.</p>
<p>The library is available as an <a href="https://www.npmjs.com/package/geographiclib">npm package</a>. To install this package, use</p><pre class="fragment"> npm install geographiclib </pre><p>For documentation, see</p><ul>
<li><a href="js/index.html">JavaScript library for geodesics</a>.</li>
</ul>
<p>Examples of using this interface are</p><ul>
<li>a <a href="../scripts/geod-calc.html">geodesic calculator</a> showing the solution of direct and inverse geodesic problem, finding intermediate points on a geodesic line, and computing the area of a geodesic polygon;</li>
<li><a href="../scripts/geod-google.html">displaying geodesics in Google Maps</a> which shows the geodesic, the geodesic circle, and various geodesic envelopes.</li>
</ul>
<h1><a class="anchor" id="python"></a>
Python implementation</h1>
<p>This includes the geodesic capabilities of <a class="el" href="namespaceGeographicLib.html" title="Namespace for GeographicLib. ">GeographicLib</a>. The source code is in the directory <code>python</code>. This implementation is entirely self-contained and does not depend on the rest of <a class="el" href="namespaceGeographicLib.html" title="Namespace for GeographicLib. ">GeographicLib</a>.</p>
<p>The library is available as an <a href="https://pypi.python.org/pypi/geographiclib">PyPI package</a>. To install this package, use</p><pre class="fragment"> pip install geographiclib </pre><p>For documentation, see</p><ul>
<li><a href="python/index.html">Python library for geodesics</a>.</li>
</ul>
<p>It is also possible to call the C++ version of <a class="el" href="namespaceGeographicLib.html" title="Namespace for GeographicLib. ">GeographicLib</a> directly from Python and the directory <code>wrapper/python</code> contains a small example, which converts heights above the geoid to heights above the ellipsoid.</p>
<h1><a class="anchor" id="matlab"></a>
MATLAB and Octave implementations</h1>
<p>The includes the geodesic capabilities of <a class="el" href="namespaceGeographicLib.html" title="Namespace for GeographicLib. ">GeographicLib</a> and implementations of the <a class="el" href="classGeographicLib_1_1TransverseMercator.html" title="Transverse Mercator projection. ">TransverseMercator</a>, <a class="el" href="classGeographicLib_1_1PolarStereographic.html" title="Polar stereographic projection. ">PolarStereographic</a>, <a class="el" href="classGeographicLib_1_1AzimuthalEquidistant.html" title="Azimuthal equidistant projection. ">AzimuthalEquidistant</a>, <a class="el" href="classGeographicLib_1_1CassiniSoldner.html" title="Cassini-Soldner projection. ">CassiniSoldner</a>, <a class="el" href="classGeographicLib_1_1Gnomonic.html" title="Gnomonic projection ">Gnomonic</a>, <a class="el" href="classGeographicLib_1_1UTMUPS.html" title="Convert between geographic coordinates and UTM/UPS. ">UTMUPS</a>, <a class="el" href="classGeographicLib_1_1MGRS.html" title="Convert between UTM/UPS and MGRS. ">MGRS</a>, <a class="el" href="classGeographicLib_1_1Geocentric.html" title="Geocentric coordinates ">Geocentric</a>, and <a class="el" href="classGeographicLib_1_1LocalCartesian.html" title="Local cartesian coordinates. ">LocalCartesian</a> classes. In addition, it includes solutions of the direct, inverse, and area problems for <a class="el" href="greatellipse.html">Great Ellipses</a>. Because these functions are all vectorized, their performance is comparable to the C++ routines. The minimum version numbers required are</p><ul>
<li>MATLAB, version 7.9, 2009b,</li>
<li>Octave, version 3.4, Feb. 2011.</li>
</ul>
<p>In addition, in order to use the geoid routines, Octave needs to have been built with a version of GraphicsMagick which supports 16-bit images. The source code is in the directory <code>matlab/geographiclib</code>. This implementation is entirely self-contained and does not depend on the rest of <a class="el" href="namespaceGeographicLib.html" title="Namespace for GeographicLib. ">GeographicLib</a>.</p>
<p>The library is available as an MATLAB Central package, <a href="https://www.mathworks.com/matlabcentral/fileexchange/50605">GeographicLib toolbox</a>.</p>
<p>A summary of the routines is obtained by</p><pre class="fragment"> help geographiclib </pre><p>Prior to version 1.42, <a class="el" href="namespaceGeographicLib.html" title="Namespace for GeographicLib. ">GeographicLib</a> was distributed with some MATLAB functionality offered via compiled interface code. This has now been replaced by native MATLAB wrapper functions in <code>matlab/geographiclib-legacy</code>; these depend on the <a href="https://www.mathworks.com/matlabcentral/fileexchange/50605">GeographicLib toolbox</a>. A summary of the routines is obtained by</p><pre class="fragment"> help geographiclib-legacy </pre><p>It is also possible to call the C++ version of <a class="el" href="namespaceGeographicLib.html" title="Namespace for GeographicLib. ">GeographicLib</a> directly from MATLAB or Octave and the directory <code>wrapper/matlab</code> contains a small example, which solves the inverse geodesic problem for ellipsoids with arbitrary flattening. (This example is taken from the MATLAB interface code which was provided prior to version 1.42.)</p>
<h1><a class="anchor" id="dotnet"></a>
.NET wrapper</h1>
<p>This is a comprehensive wrapper library, written and maintained by Scott Heiman, which exposes all of the functionality of <a class="el" href="namespaceGeographicLib.html" title="Namespace for GeographicLib. ">GeographicLib</a> to the .NET family of languages. For documentation, see</p><ul>
<li><a href="NET/index.html">NETGeographicLib .NET wrapper library</a>.</li>
</ul>
<h1><a class="anchor" id="maxima"></a>
Maxima routines</h1>
<p>Maxima is a free computer algebra system which can be downloaded from <a href="http://maxima.sourceforge.net">http://maxima.sourceforge.net</a>. Maxima was used to generate the series used by <a class="el" href="classGeographicLib_1_1TransverseMercator.html" title="Transverse Mercator projection. ">TransverseMercator</a> (<a href="tmseries.mac">tmseries.mac</a>), <a class="el" href="classGeographicLib_1_1Geodesic.html" title="Geodesic calculations ">Geodesic</a> (<a href="geod.mac">geod.mac</a>), <a class="el" href="classGeographicLib_1_1Rhumb.html" title="Solve of the direct and inverse rhumb problems. ">Rhumb</a> (<a href="rhumbarea.mac">rhumbarea.mac</a>), <a class="el" href="greatellipse.html#gearea">The area under a great ellipse</a> (<a href="gearea.mac">gearea.mac</a>), the relation between <a class="el" href="auxlat.html">Auxiliary latitudes</a> (<a href="auxlat.mac">auxlat.mac</a>), and to generate accurate data for testing (<a href="tm.mac">tm.mac</a> and <a href="geodesic.mac">geodesic.mac</a>). The latter uses Maxima's bigfloat arithmetic together with series extended to high order or solutions in terms of elliptic integrals (<a href="ellint.mac">ellint.mac</a>). These files contain brief instructions on how to use them.</p>
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