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<p>Luís,</p>
<p><a class="moz-txt-link-freetext" href="http://www.opengis.net/def/crs/OGC/1.3/CRS84">http://www.opengis.net/def/crs/OGC/1.3/CRS84</a> is the verbose
definition of OGC CRS84.</p>
<p>It uses the EPSG:6326 datum (now modeled as a datum ensemble in
EPSG v10 database releases).</p>
<p>The following remarks in the definition makes it clear that the
intent if to be based on the datum ensemble rather than a
particular realization:<br>
</p>
<p><gml:remarks><br>
EPSG::6326 has been the then current realization. No distinction
is made between the original and subsequent (G730, G873, G1150,
G1674 and G1762) WGS 84 frames. Since 1997, WGS 84 has been
maintained within 10cm of the then current ITRF.<br>
</gml:remarks></p>
<p>For all purposes, OGC:CRS84 is identical to EPSG:4326 but the
axis order.<br>
</p>
<p>Even<br>
</p>
<div class="moz-cite-prefix">Le 18/08/2022 à 14:59, Luí s Moreira de
Sousa via PROJ a écrit :<br>
</div>
<blockquote type="cite"
cite="mid:hr87Ph63-cC0xWF0NOoCpAc4rHXD_z6lLgwrVp96cStlFrykBTvfnrgCzZpwKZ0SA5FbyI_N_w49dLNtl-B6oEgobQU8EFWM7drxx4kgSi4=@protonmail.ch">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div style="font-family: Arial; font-size: 14px;">Hi all,</div>
<div style="font-family: Arial; font-size: 14px;"><br>
</div>
<div style="font-family: Arial; font-size: 14px;">this is not a
Proj question per se, but possibly relevant to the library. The
specification is not clear, whether it refers to the datum
ensemble or to a particular datum (Transit?). Any insight on the
intention of the OGC in this regard? <br>
</div>
<div style="font-family: Arial; font-size: 14px;"><br>
</div>
<div style="font-family: Arial; font-size: 14px;">Thank you.<br>
</div>
<div class="protonmail_signature_block" style="font-family: Arial;
font-size: 14px;">
<div class="protonmail_signature_block-user">
<div><br>
</div>
<div>-- <br>
</div>
<div>Luís</div>
</div>
</div>
<br>
<fieldset class="moz-mime-attachment-header"></fieldset>
<pre class="moz-quote-pre" wrap="">_______________________________________________
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</pre>
</blockquote>
<pre class="moz-signature" cols="72">--
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My software is free, but my time generally not.</pre>
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