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GeographicLib — GeographicLib 2.3 documentation
<!DOCTYPE html> <html lang="en" data-content_root="./"> <head> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="viewport" content="width=device-width, initial-scale=1" /> <title>GeographicLib — GeographicLib 2.3 documentation</title> <link rel="stylesheet" type="text/css" href="_static/pygments.css?v=fa44fd50" /> <link rel="stylesheet" type="text/css" href="_static/classic.css?v=def86cc0" /> <script src="_static/documentation_options.js?v=57236720"></script> <script src="_static/doctools.js?v=9a2dae69"></script> <script src="_static/sphinx_highlight.js?v=dc90522c"></script> <script async="async" src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script> <link rel="index" title="Index" href="genindex.html" /> <link rel="search" title="Search" href="search.html" /> <link rel="next" title="Library" href="doc/library.html" /> </head><body> <div class="related" role="navigation" aria-label="Related"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="genindex.html" title="General Index" accesskey="I">index</a></li> <li class="right" > <a href="doc/library.html" title="Library" accesskey="N">next</a> |</li> <li class="nav-item nav-item-0"><a href="#">GeographicLib 2.3 documentation</a> »</li> <li class="nav-item nav-item-this"><a href="">GeographicLib</a></li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body" role="main"> <section id="geographiclib"> <h1>GeographicLib<a class="headerlink" href="#geographiclib" title="Link to this heading">¶</a></h1> <p><strong>GeographicLib</strong> is collection of libraries descended from an original C++ library by <a class="reference external" href="mailto:karney%40alum.mit.edu">Charles Karney</a> which started in 2008. That <a class="reference external" href="C++/doc/index.html">C++ library</a> now offers:</p> <ul class="simple"> <li><p>geodesic and rhumb line calculations;</p></li> <li><p>conversions between geographic, UTM, UPS, MGRS, geocentric, and local cartesian coordinates;</p></li> <li><p>gravity (e.g., EGM2008) and geomagnetic field (e.g., WMM2020) calculations.</p></li> </ul> <p>Portions of the library (particularly the geodesic routines) have also been implemented in a few <a class="reference internal" href="doc/library.html#languages"><span class="std std-ref">other languages</span></a>. Prior to version 2.0, all the implementations were bundled together in the same repository. Now they have been separated into a family of repositories on <a class="reference external" href="https://github.com/geographiclib">github</a>.</p> <section id="links"> <h2>Links<a class="headerlink" href="#links" title="Link to this heading">¶</a></h2> <ul class="simple"> <li><p><a class="reference external" href="C++/doc/index.html">C++ library documentation</a></p></li> <li><p><a class="reference external" href="https://sourceforge.net/projects/geographiclib">SourceForge project page</a> for GeographicLib</p></li> <li><p><a class="reference external" href="doc/library.html#languages">Implementations in other languages</a></p></li> <li><p><a class="reference external" href="LICENSE.txt">MIT license</a></p></li> <li><p><a class="reference external" href="oindex.html">old home page</a> for GeographicLib</p></li> </ul> <div class="toctree-wrapper compound"> <p class="caption" role="heading"><span class="caption-text">Contents:</span></p> <ul> <li class="toctree-l1"><a class="reference internal" href="doc/library.html">Library</a><ul> <li class="toctree-l2"><a class="reference internal" href="doc/library.html#infrastructure">Infrastructure</a></li> <li class="toctree-l2"><a class="reference internal" href="doc/library.html#supported-languages">Supported languages</a></li> <li class="toctree-l2"><a class="reference internal" href="doc/library.html#online-utilities">Online utilities</a></li> <li class="toctree-l2"><a class="reference internal" href="doc/library.html#datasets">Datasets</a></li> <li class="toctree-l2"><a class="reference internal" href="doc/library.html#test-data">Test data</a></li> <li class="toctree-l2"><a class="reference internal" href="doc/library.html#other-implementations">Other implementations</a></li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="doc/research.html">Research</a><ul> <li class="toctree-l2"><a class="reference internal" href="doc/research.html#geodesics">Geodesics</a></li> <li class="toctree-l2"><a class="reference internal" href="doc/research.html#transverse-mercator">Transverse Mercator</a></li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="doc/triaxial.html">Triaxial ellipsoids</a><ul> <li class="toctree-l2"><a class="reference internal" href="doc/triaxial.html#introduction">Introduction</a></li> <li class="toctree-l2"><a class="reference internal" href="doc/triaxial.html#coordinate-systems">Coordinate systems</a></li> <li class="toctree-l2"><a class="reference internal" href="doc/triaxial.html#geodesics">Geodesics</a></li> <li class="toctree-l2"><a class="reference internal" href="doc/triaxial.html#utilities">Utilities</a></li> <li class="toctree-l2"><a class="reference internal" href="doc/triaxial.html#references">References</a></li> </ul> </li> </ul> </div> </section> </section> <section id="indices-and-tables"> <h1>Indices and tables<a class="headerlink" href="#indices-and-tables" title="Link to this heading">¶</a></h1> <ul class="simple"> <li><p><a class="reference internal" href="genindex.html"><span class="std std-ref">Index</span></a></p></li> <li><p><a class="reference internal" href="search.html"><span class="std std-ref">Search Page</span></a></p></li> </ul> </section> <div class="clearer"></div> </div> </div> </div> <div class="sphinxsidebar" role="navigation" aria-label="Main"> <div class="sphinxsidebarwrapper"> <div> <h3><a href="#">Table of Contents</a></h3> <ul> <li><a class="reference internal" href="#">GeographicLib</a><ul> <li><a class="reference internal" href="#links">Links</a></li> </ul> </li> <li><a class="reference internal" href="#indices-and-tables">Indices and tables</a></li> </ul> </div> <div> <h4>Next topic</h4> <p class="topless"><a href="doc/library.html" title="next chapter">Library</a></p> </div> <div role="note" aria-label="source link"> <h3>This Page</h3> <ul class="this-page-menu"> <li><a href="_sources/index.rst.txt" rel="nofollow">Show Source</a></li> </ul> </div> <search id="searchbox" style="display: none" role="search"> <h3 id="searchlabel">Quick search</h3> <div class="searchformwrapper"> <form class="search" action="search.html" method="get"> <input type="text" name="q" aria-labelledby="searchlabel" autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false"/> <input type="submit" value="Go" /> </form> </div> </search> <script>document.getElementById('searchbox').style.display = "block"</script> </div> </div> <div class="clearer"></div> </div> <div class="related" role="navigation" aria-label="Related"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="genindex.html" title="General Index" >index</a></li> <li class="right" > <a href="doc/library.html" title="Library" >next</a> |</li> <li class="nav-item nav-item-0"><a href="#">GeographicLib 2.3 documentation</a> »</li> <li class="nav-item nav-item-this"><a href="">GeographicLib</a></li> </ul> </div> <div class="footer" role="contentinfo"> © Copyright 2009–2024, Charles Karney. 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