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<section id="lat-long-geodetic-alias">
<span id="latlon"></span><h1>Lat/long (Geodetic alias)<a class="headerlink" href="#lat-long-geodetic-alias" title="Permalink to this headline">¶</a></h1>
<p>Passes geodetic coordinates through unchanged.</p>
<table class="docutils align-default">
<colgroup>
<col style="width: 27%" />
<col style="width: 73%" />
</colgroup>
<tbody>
<tr class="row-odd"><td><p><strong>Aliases</strong></p></td>
<td><p>latlon, latlong, lonlat, longlat</p></td>
</tr>
<tr class="row-even"><td><p><strong>Domain</strong></p></td>
<td><p>2D</p></td>
</tr>
<tr class="row-odd"><td><p><strong>Input type</strong></p></td>
<td><p>Geodetic coordinates</p></td>
</tr>
<tr class="row-even"><td><p><strong>Output type</strong></p></td>
<td><p>Geodetic coordinates</p></td>
</tr>
</tbody>
</table>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>Can not be used with the <strong class="program">proj</strong> application.</p>
</div>
<section id="parameters">
<h2>Parameters<a class="headerlink" href="#parameters" title="Permalink to this headline">¶</a></h2>
<p>No parameters will affect the output of the operation if used on it’s own.
However, the parameters below can be used in a declarative manner when used with
<strong class="program">cs2cs</strong> or in a <a class="reference internal" href="../pipeline.html#pipeline"><span class="std std-ref">transformation pipeline</span></a> .</p>
<dl class="std option">
<dt class="sig sig-object std" id="cmdoption-arg-ellps">
<span class="sig-name descname"><span class="pre">+ellps</span></span><span class="sig-prename descclassname"><span class="pre">=<value></span></span><a class="headerlink" href="#cmdoption-arg-ellps" title="Permalink to this definition">¶</a></dt>
<dd><p>The name of a built-in ellipsoid definition.</p>
<p>See <a class="reference internal" href="../../usage/ellipsoids.html#ellipsoids"><span class="std std-ref">Ellipsoids</span></a> for more information, or execute
<a class="reference internal" href="../../apps/proj.html#cmdoption-proj-le"><code class="xref std std-option docutils literal notranslate"><span class="pre">proj</span> <span class="pre">-le</span></code></a> for a list of built-in ellipsoid names.</p>
<p><em>Defaults to “GRS80”.</em></p>
</dd></dl>
<dl class="std option">
<dt class="sig sig-object std" id="cmdoption-arg-datum">
<span class="sig-name descname"><span class="pre">+datum</span></span><span class="sig-prename descclassname"><span class="pre">=<value></span></span><a class="headerlink" href="#cmdoption-arg-datum" title="Permalink to this definition">¶</a></dt>
<dd><p>Declare the datum used with the coordinates. Available options are:
<code class="docutils literal notranslate"><span class="pre">WGS84</span></code>, <code class="docutils literal notranslate"><span class="pre">GGRS87</span></code>, <code class="docutils literal notranslate"><span class="pre">NAD38</span></code>, <code class="docutils literal notranslate"><span class="pre">NAD27</span></code>, <code class="docutils literal notranslate"><span class="pre">potsdam</span></code>, <code class="docutils literal notranslate"><span class="pre">carthage</span></code>,
<code class="docutils literal notranslate"><span class="pre">hermannskogel</span></code>, <code class="docutils literal notranslate"><span class="pre">ire65</span></code>, <code class="docutils literal notranslate"><span class="pre">nzgd49</span></code>, <code class="docutils literal notranslate"><span class="pre">OSGB336</span></code>.</p>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>The <code class="docutils literal notranslate"><span class="pre">+datum</span></code> option is primarily available to support the legacy
use of PROJ.4 strings as CRS descriptors and should in most cases
be avoided.</p>
</div>
</dd></dl>
<dl class="std option">
<dt class="sig sig-object std" id="cmdoption-arg-towgs84">
<span class="sig-name descname"><span class="pre">+towgs84</span></span><span class="sig-prename descclassname"><span class="pre">=<list></span></span><a class="headerlink" href="#cmdoption-arg-towgs84" title="Permalink to this definition">¶</a></dt>
<dd><p>A list of three or seven <a class="reference internal" href="../transformations/helmert.html#helmert"><span class="std std-ref">Helmert</span></a> parameters that maps
the input coordinates to the WGS84 datum.</p>
</dd></dl>
</section>
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