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aria-label="Sequential page navigation"> + <a href="cct.html" class="btn btn-neutral float-left" title="cct" accesskey="p"><span class="fa fa-arrow-circle-left" aria-hidden="true"></span> Previous</a> + <a href="geod.html" class="btn btn-neutral float-right" title="geod" accesskey="n">Next <span class="fa fa-arrow-circle-right" aria-hidden="true"></span></a> + </div> + <hr/> +</div> + <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article"> + <div itemprop="articleBody"> + + <section id="cs2cs"> +<span id="id1"></span><h1>cs2cs<a class="headerlink" href="#cs2cs" title="Permalink to this headline">¶</a></h1> +<p>Filter for transformations between two coordinate reference systems.</p> +<section id="synopsis"> +<h2>Synopsis<a class="headerlink" href="#synopsis" title="Permalink to this headline">¶</a></h2> +<blockquote> +<div><div class="line-block"> +<div class="line"><strong>cs2cs</strong> [<strong>-eEfIlrstvwW</strong> [args]]</div> +<div class="line-block"> +<div class="line">[[–area <name_or_code>] | [–bbox <west_long,south_lat,east_long,north_lat>]]</div> +<div class="line">[–authority <name>] [–no-ballpark] [–accuracy <accuracy>]</div> +<div class="line">([<em>+opt[=arg]</em> …] [+to <em>+opt[=arg]</em> …] | {source_crs} {target_crs})</div> +<div class="line">file …</div> +</div> +</div> +<p>where {source_crs} or {target_crs} is one of the possibilities accepted +by <a class="reference internal" href="../development/reference/functions.html#c.proj_create" title="proj_create"><code class="xref c c-func docutils literal notranslate"><span class="pre">proj_create()</span></code></a>, provided it expresses a CRS</p> +<ul class="simple"> +<li><p>a proj-string,</p></li> +<li><p>a WKT string,</p></li> +<li><p>an object code (like “EPSG:4326”, “urn:ogc:def:crs:EPSG::4326”, +“urn:ogc:def:coordinateOperation:EPSG::1671”),</p></li> +<li><p>an Object name. e.g “WGS 84”, “WGS 84 / UTM zone 31N”. In that case as +uniqueness is not guaranteed, heuristics are applied to determine the appropriate best match.</p></li> +<li><p>a OGC URN combining references for compound coordinate reference systems +(e.g “<a class="reference external" href="urn:ogc:def:crs,crs:EPSG::2393,crs:EPSG::5717">urn:ogc:def:crs,crs:EPSG::2393,crs:EPSG::5717</a>” or custom abbreviated +syntax “EPSG:2393+5717”),</p></li> +<li><p>a OGC URN combining references for references for projected or derived CRSs +e.g. for Projected 3D CRS “UTM zone 31N / WGS 84 (3D)”: +“<a class="reference external" href="urn:ogc:def:crs,crs:EPSG::4979,cs:PROJ::ENh,coordinateOperation:EPSG::16031">urn:ogc:def:crs,crs:EPSG::4979,cs:PROJ::ENh,coordinateOperation:EPSG::16031</a>” +(<em>added in 6.2</em>)</p></li> +<li><p>a OGC URN combining references for concatenated operations +(e.g. “<a class="reference external" href="urn:ogc:def:coordinateOperation,coordinateOperation:EPSG::3895,coordinateOperation:EPSG::1618">urn:ogc:def:coordinateOperation,coordinateOperation:EPSG::3895,coordinateOperation:EPSG::1618</a>”)</p></li> +<li><p>a PROJJSON string. The jsonschema is at <a class="reference external" href="https://proj.org/schemas/v0.4/projjson.schema.json">https://proj.org/schemas/v0.4/projjson.schema.json</a> (<em>added in 6.2</em>)</p></li> +<li><p>a compound CRS made from two object names separated with ” + “. e.g. “WGS 84 + EGM96 height” (<em>added in 7.1</em>)</p></li> +</ul> +<div class="versionadded"> +<p><span class="versionmodified added">New in version 6.0.0.</span></p> +</div> +<div class="admonition note"> +<p class="admonition-title">Note</p> +<p>before 7.0.1, it was needed to add +to between {source_crs} and {target_crs} +when adding a filename</p> +</div> +</div></blockquote> +</section> +<section id="description"> +<h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2> +<p><strong class="program">cs2cs</strong> performs transformation between the source and destination +cartographic coordinate reference system on a set of input points. The coordinate +reference system transformation can include translation between projected and +geographic coordinates as well as the application of datum shifts.</p> +<p>The following control parameters can appear in any order:</p> +<dl class="std option"> +<dt class="sig sig-object std" id="cmdoption-cs2cs-I"> +<span id="cmdoption-cs2cs-i"></span><span class="sig-name descname"><span class="pre">-I</span></span><span class="sig-prename descclassname"></span><a class="headerlink" href="#cmdoption-cs2cs-I" title="Permalink to this definition">¶</a></dt> +<dd><p>Method to specify inverse translation, convert from <em>+to</em> coordinate system to +the primary coordinate system defined.</p> +</dd></dl> + +<dl class="std option"> +<dt class="sig sig-object std" id="cmdoption-cs2cs-t-a"> +<span class="sig-name descname"><span class="pre">-t<a></span></span><span class="sig-prename descclassname"></span><a class="headerlink" href="#cmdoption-cs2cs-t-a" title="Permalink to this definition">¶</a></dt> +<dd><p>Where <em>a</em> specifies a character employed as the first character to denote a control +line to be passed through without processing. This option applicable to +ASCII input only. (# is the default value).</p> +</dd></dl> + +<dl class="std option"> +<dt class="sig sig-object std" id="cmdoption-cs2cs-d"> +<span class="sig-name descname"><span class="pre">-d</span></span><span class="sig-prename descclassname"> <span class="pre"><n></span></span><a class="headerlink" href="#cmdoption-cs2cs-d" title="Permalink to this definition">¶</a></dt> +<dd><div class="versionadded"> +<p><span class="versionmodified added">New in version 5.2.0.</span></p> +</div> +<p>Specify the number of decimals in the output.</p> +</dd></dl> + +<dl class="std option"> +<dt class="sig sig-object std" id="cmdoption-cs2cs-e"> +<span class="sig-name descname"><span class="pre">-e</span></span><span class="sig-prename descclassname"> <span class="pre"><string></span></span><a class="headerlink" href="#cmdoption-cs2cs-e" title="Permalink to this definition">¶</a></dt> +<dd><p>Where <em>string</em> is an arbitrary string to be output if an error is detected during +data transformations. The default value is a three character string: <code class="docutils literal notranslate"><span class="pre">*\t*</span></code>.</p> +</dd></dl> + +<dl class="std option"> +<dt class="sig sig-object std" id="cmdoption-cs2cs-E"> +<span class="sig-name descname"><span class="pre">-E</span></span><span class="sig-prename descclassname"></span><a class="headerlink" href="#cmdoption-cs2cs-E" title="Permalink to this definition">¶</a></dt> +<dd><p>Causes the input coordinates to be copied to the output line prior to +printing the converted values.</p> +</dd></dl> + +<dl class="std option"> +<dt class="sig sig-object std" id="cmdoption-cs2cs-l"> +<span class="sig-name descname"><span class="pre">-l<[</span></span><span class="sig-prename descclassname"><span class="pre">=id]></span></span><a class="headerlink" href="#cmdoption-cs2cs-l" title="Permalink to this definition">¶</a></dt> +<dd><p>List projection identifiers that can be selected with <em>+proj</em>. <code class="docutils literal notranslate"><span class="pre">cs2cs</span> <span class="pre">-l=id</span></code> +gives expanded description of projection <em>id</em>, e.g. <code class="docutils literal notranslate"><span class="pre">cs2cs</span> <span class="pre">-l=merc</span></code>.</p> +</dd></dl> + +<dl class="std option"> +<dt class="sig sig-object std" id="cmdoption-cs2cs-lp"> +<span class="sig-name descname"><span class="pre">-lp</span></span><span class="sig-prename descclassname"></span><a class="headerlink" href="#cmdoption-cs2cs-lp" title="Permalink to this definition">¶</a></dt> +<dd><p>List of all projection id that can be used with the <em>+proj</em> parameter. +Equivalent to <code class="docutils literal notranslate"><span class="pre">cs2cs</span> <span class="pre">-l</span></code>.</p> +</dd></dl> + +<dl class="std option"> +<dt class="sig sig-object std" id="cmdoption-cs2cs-lP"> +<span class="sig-name descname"><span class="pre">-lP</span></span><span class="sig-prename descclassname"></span><a class="headerlink" href="#cmdoption-cs2cs-lP" title="Permalink to this definition">¶</a></dt> +<dd><p>Expanded description of all projections that can be used with the <em>+proj</em> +parameter.</p> +</dd></dl> + +<dl class="std option"> +<dt class="sig sig-object std" id="cmdoption-cs2cs-le"> +<span class="sig-name descname"><span class="pre">-le</span></span><span class="sig-prename descclassname"></span><a class="headerlink" href="#cmdoption-cs2cs-le" title="Permalink to this definition">¶</a></dt> +<dd><p>List of all ellipsoids that can be selected with the <em>+ellps</em> parameters.</p> +</dd></dl> + +<dl class="std option"> +<dt class="sig sig-object std" id="cmdoption-cs2cs-lu"> +<span class="sig-name descname"><span class="pre">-lu</span></span><span class="sig-prename descclassname"></span><a class="headerlink" href="#cmdoption-cs2cs-lu" title="Permalink to this definition">¶</a></dt> +<dd><p>List of all distance units that can be selected with the <em>+units</em> parameter.</p> +</dd></dl> + +<dl class="std option"> +<dt class="sig sig-object std" id="cmdoption-cs2cs-r"> +<span class="sig-name descname"><span class="pre">-r</span></span><span class="sig-prename descclassname"></span><a class="headerlink" href="#cmdoption-cs2cs-r" title="Permalink to this definition">¶</a></dt> +<dd><p>This options reverses the order of the first two expected +inputs from that specified by the CRS to the opposite +order. The third coordinate, typically height, remains +third.</p> +</dd></dl> + +<dl class="std option"> +<dt class="sig sig-object std" id="cmdoption-cs2cs-s"> +<span class="sig-name descname"><span class="pre">-s</span></span><span class="sig-prename descclassname"></span><a class="headerlink" href="#cmdoption-cs2cs-s" title="Permalink to this definition">¶</a></dt> +<dd><p>This options reverses the order of the first two expected +outputs from that specified by the CRS to the opposite +order. The third coordinate, typically height, remains +third.</p> +</dd></dl> + +<dl class="std option"> +<dt class="sig sig-object std" id="cmdoption-cs2cs-f"> +<span class="sig-name descname"><span class="pre">-f</span></span><span class="sig-prename descclassname"> <span class="pre"><format></span></span><a class="headerlink" href="#cmdoption-cs2cs-f" title="Permalink to this definition">¶</a></dt> +<dd><p>Where <em>format</em> is a printf format string to control the form of the output values. +For inverse projections, the output will be in degrees when this option is +employed. If a format is specified for inverse projection the output data +will be in decimal degrees. The default format is <code class="docutils literal notranslate"><span class="pre">"%.2f"</span></code> for forward +projection and DMS for inverse.</p> +</dd></dl> + +<dl class="std option"> +<dt class="sig sig-object std" id="cmdoption-cs2cs-w-n"> +<span class="sig-name descname"><span class="pre">-w<n></span></span><span class="sig-prename descclassname"></span><a class="headerlink" href="#cmdoption-cs2cs-w-n" title="Permalink to this definition">¶</a></dt> +<dd><p>Where <em>n</em> is the number of significant fractional digits to employ for seconds +output (when the option is not specified, <code class="docutils literal notranslate"><span class="pre">-w3</span></code> is assumed).</p> +</dd></dl> + +<dl class="std option"> +<dt class="sig sig-object std" id="cmdoption-cs2cs-W-n"> +<span class="sig-name descname"><span class="pre">-W<n></span></span><span class="sig-prename descclassname"></span><a class="headerlink" href="#cmdoption-cs2cs-W-n" title="Permalink to this definition">¶</a></dt> +<dd><p>Where <em>n</em> is the number of significant fractional digits to employ for seconds +output. When <code class="docutils literal notranslate"><span class="pre">-W</span></code> is employed the fields will be constant width +with leading zeroes.</p> +</dd></dl> + +<dl class="std option"> +<dt class="sig sig-object std" id="cmdoption-cs2cs-v"> +<span class="sig-name descname"><span class="pre">-v</span></span><span class="sig-prename descclassname"></span><a class="headerlink" href="#cmdoption-cs2cs-v" title="Permalink to this definition">¶</a></dt> +<dd><p>Causes a listing of cartographic control parameters tested for and used by +the program to be printed prior to input data.</p> +</dd></dl> + +<dl class="std option"> +<dt class="sig sig-object std" id="cmdoption-cs2cs-area"> +<span class="sig-name descname"><span class="pre">--area</span></span><span class="sig-prename descclassname"> <span class="pre"><name_or_code></span></span><a class="headerlink" href="#cmdoption-cs2cs-area" title="Permalink to this definition">¶</a></dt> +<dd><div class="versionadded"> +<p><span class="versionmodified added">New in version 8.0.0.</span></p> +</div> +<p>Specify an area of interest to restrict the results when researching +coordinate operations between 2 CRS. The area of interest can be specified either +as a name (e.g “Denmark - onshore”) or a AUTHORITY:CODE (EPSG:3237)</p> +<p>This option is mutually exclusive with <a class="reference internal" href="#cmdoption-cs2cs-bbox"><code class="xref std std-option docutils literal notranslate"><span class="pre">--bbox</span></code></a>.</p> +</dd></dl> + +<dl class="std option"> +<dt class="sig sig-object std" id="cmdoption-cs2cs-bbox"> +<span class="sig-name descname"><span class="pre">--bbox</span></span><span class="sig-prename descclassname"> <span class="pre"><west_long,south_lat,east_long,north_lat></span></span><a class="headerlink" href="#cmdoption-cs2cs-bbox" title="Permalink to this definition">¶</a></dt> +<dd><div class="versionadded"> +<p><span class="versionmodified added">New in version 8.0.0.</span></p> +</div> +<p>Specify an area of interest to restrict the results when researching +coordinate operations between 2 CRS. The area of interest is specified as a +bounding box with geographic coordinates, expressed in degrees in a +unspecified geographic CRS. +<cite>west_long</cite> and <cite>east_long</cite> should be in the [-180,180] range, and +<cite>south_lat</cite> and <cite>north_lat</cite> in the [-90,90]. <cite>west_long</cite> is generally lower than +<cite>east_long</cite>, except in the case where the area of interest crosses the antimeridian.</p> +</dd></dl> + +<dl class="std option"> +<dt class="sig sig-object std" id="cmdoption-cs2cs-no-ballpark"> +<span class="sig-name descname"><span class="pre">--no-ballpark</span></span><span class="sig-prename descclassname"></span><a class="headerlink" href="#cmdoption-cs2cs-no-ballpark" title="Permalink to this definition">¶</a></dt> +<dd><div class="versionadded"> +<p><span class="versionmodified added">New in version 8.0.0.</span></p> +</div> +<p>Disallow any coordinate operation that is, or contains, a +<a class="reference internal" href="../glossary.html#term-Ballpark-transformation"><span class="xref std std-term">Ballpark transformation</span></a></p> +</dd></dl> + +<dl class="std option"> +<dt class="sig sig-object std" id="cmdoption-cs2cs-accuracy"> +<span class="sig-name descname"><span class="pre">--accuracy</span></span><span class="sig-prename descclassname"> <span class="pre"><accuracy></span></span><a class="headerlink" href="#cmdoption-cs2cs-accuracy" title="Permalink to this definition">¶</a></dt> +<dd><div class="versionadded"> +<p><span class="versionmodified added">New in version 8.0.0.</span></p> +</div> +<p>Sets the minimum desired accuracy for candidate coordinate operations.</p> +</dd></dl> + +<dl class="std option"> +<dt class="sig sig-object std" id="cmdoption-cs2cs-authority"> +<span class="sig-name descname"><span class="pre">--authority</span></span><span class="sig-prename descclassname"> <span class="pre"><name></span></span><a class="headerlink" href="#cmdoption-cs2cs-authority" title="Permalink to this definition">¶</a></dt> +<dd><div class="versionadded"> +<p><span class="versionmodified added">New in version 8.0.0.</span></p> +</div> +<p>This option can be used to restrict the authority of coordinate operations +looked up in the database. When not specified, coordinate +operations from any authority will be searched, with the restrictions set +in the <code class="docutils literal notranslate"><span class="pre">authority_to_authority_preference</span></code> database table related to the authority +of the source/target CRS themselves. +If authority is set to <code class="docutils literal notranslate"><span class="pre">any</span></code>, then coordinate operations from any authority will be searched +If authority is a non-empty string different of <code class="docutils literal notranslate"><span class="pre">any</span></code>, then coordinate operations +will be searched only in that authority namespace (e.g <code class="docutils literal notranslate"><span class="pre">EPSG</span></code>).</p> +<p>This option is mutually exclusive with <a class="reference internal" href="#cmdoption-cs2cs-bbox"><code class="xref std std-option docutils literal notranslate"><span class="pre">--bbox</span></code></a>.</p> +</dd></dl> + +<p>The <em>+opt</em> run-line arguments are associated with cartographic +parameters. Usage varies with projection and for a complete description +consult the <a class="reference internal" href="../operations/projections/index.html#projections"><span class="std std-ref">projection pages</span></a>.</p> +<p>The <strong class="program">cs2cs</strong> program requires two coordinate reference system (CRS) definitions. The first (or +primary is defined based on all projection parameters not appearing after the +<em>+to</em> argument. All projection parameters appearing after the <em>+to</em> argument +are considered the definition of the second CRS. If there is no +second CRS defined, a geographic CRS based on the +datum and ellipsoid of the source CRS is assumed. Note that the +source and destination CRS can both of same or different nature (geographic, +projected, compound CRS), or one of each and may have the same or different datums.</p> +<p>When using a WKT definition or a AUTHORITY:CODE, the axis order of the CRS will +be enforced. So for example if using EPSG:4326, the first value expected (or +returned) will be a latitude.</p> +<p>Internally, <strong class="program">cs2cs</strong> uses the <a class="reference internal" href="../development/reference/functions.html#c.proj_create_crs_to_crs" title="proj_create_crs_to_crs"><code class="xref c c-func docutils literal notranslate"><span class="pre">proj_create_crs_to_crs()</span></code></a> function +to compute the appropriate coordinate operation, so implementation details of +this function directly impact the results returned by the program.</p> +<p>The environment parameter <span class="target" id="index-0"></span><a class="reference internal" href="../usage/environmentvars.html#envvar-PROJ_LIB"><code class="xref std std-envvar docutils literal notranslate"><span class="pre">PROJ_LIB</span></code></a> establishes the +directory for resource files (database, datum shift grids, etc.)</p> +<p>One or more files (processed in left to right order) specify the source of +data to be transformed. A <code class="docutils literal notranslate"><span class="pre">-</span></code> will specify the location of processing standard +input. If no files are specified, the input is assumed to be from stdin. +For input data the two data values must be in the first two white space +separated fields and when both input and output are ASCII all trailing portions +of the input line are appended to the output line.</p> +<p>Input geographic data (longitude and latitude) must be in DMS or decimal +degrees format and input cartesian data must be in units consistent with the +ellipsoid major axis or sphere radius units. Output geographic coordinates will +normally be in DMS format (use <code class="docutils literal notranslate"><span class="pre">-f</span> <span class="pre">%.12f</span></code> for decimal degrees with 12 decimal +places), while projected (cartesian) coordinates will be in linear +(meter, feet) units.</p> +<section id="use-of-remote-grids"> +<h3>Use of remote grids<a class="headerlink" href="#use-of-remote-grids" title="Permalink to this headline">¶</a></h3> +<div class="versionadded"> +<p><span class="versionmodified added">New in version 7.0.0.</span></p> +</div> +<p>If the <span class="target" id="index-1"></span><a class="reference internal" href="../usage/environmentvars.html#envvar-PROJ_NETWORK"><code class="xref std std-envvar docutils literal notranslate"><span class="pre">PROJ_NETWORK</span></code></a> environment variable is set to <code class="docutils literal notranslate"><span class="pre">ON</span></code>, +<strong class="program">cs2cs</strong> will attempt to use remote grids stored on CDN (Content +Delivery Network) storage, when they are not available locally.</p> +<p>More details are available in the <a class="reference internal" href="../usage/network.html#network"><span class="std std-ref">Network capabilities</span></a> section.</p> +</section> +</section> +<section id="examples"> +<h2>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2> +<section id="using-proj-strings"> +<h3>Using PROJ strings<a class="headerlink" href="#using-proj-strings" title="Permalink to this headline">¶</a></h3> +<p>The following script</p> +<div class="highlight-none notranslate"><div class="highlight"><pre><span></span>cs2cs +proj=latlong +datum=NAD83 +to +proj=utm +zone=10 +datum=NAD27 -r <<EOF +45°15'33.1" 111.5W +45d15.551666667N -111d30 ++45.25919444444 111d30'000w +EOF +</pre></div> +</div> +<p>will transform the input NAD83 geographic coordinates into NAD27 coordinates in +the UTM projection with zone 10 selected. The geographic values of this +example are equivalent and meant as examples of various forms of DMS input. +The x-y output data will appear as three lines of:</p> +<div class="highlight-none notranslate"><div class="highlight"><pre><span></span>1402293.44 5076292.68 0.00 +</pre></div> +</div> +</section> +<section id="using-epsg-crs-codes"> +<h3>Using EPSG CRS codes<a class="headerlink" href="#using-epsg-crs-codes" title="Permalink to this headline">¶</a></h3> +<p>Transforming from WGS 84 latitude/longitude (in that order) to UTM Zone 31N/WGS 84</p> +<div class="highlight-none notranslate"><div class="highlight"><pre><span></span>cs2cs EPSG:4326 EPSG:32631 <<EOF +45N 2E +EOF +</pre></div> +</div> +<p>outputs</p> +<div class="highlight-none notranslate"><div class="highlight"><pre><span></span>421184.70 4983436.77 0.00 +</pre></div> +</div> +</section> +<section id="using-epsg-crs-names"> +<h3>Using EPSG CRS names<a class="headerlink" href="#using-epsg-crs-names" title="Permalink to this headline">¶</a></h3> +<p>Transforming from WGS 84 latitude/longitude (in that order) with EGM96 height to +UTM Zone 31N/WGS 84 with WGS84 ellipsoidal height</p> +<div class="highlight-none notranslate"><div class="highlight"><pre><span></span>echo 45 2 0 | cs2cs "WGS 84 + EGM96 height" "WGS 84 / UTM zone 31N" +</pre></div> +</div> +<p>outputs</p> +<div class="highlight-none notranslate"><div class="highlight"><pre><span></span>421184.70 4983436.77 50.69 +</pre></div> +</div> +</section> +</section> +</section> + + + </div> + </div> + <footer><div class="rst-footer-buttons" role="navigation" aria-label="Footer"> + <a href="cct.html" class="btn btn-neutral float-left" title="cct" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left" aria-hidden="true"></span> Previous</a> + <a href="geod.html" class="btn btn-neutral float-right" title="geod" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right" aria-hidden="true"></span></a> + </div> + + <hr/> + + <div role="contentinfo"> + <p>© Copyright 1983-2022. + <span class="lastupdated">Last updated on 22 Mar 2022. + </span></p> + </div> + + Built with <a href="https://www.sphinx-doc.org/">Sphinx</a> using a + <a href="https://github.com/readthedocs/sphinx_rtd_theme">theme</a> + provided by <a href="https://readthedocs.org">Read the Docs</a>. + + +</footer> + </div> + </div> + </section> + </div> + <script> + jQuery(function () { + SphinxRtdTheme.Navigation.enable(true); + }); + </script> + +</body> +</html>
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