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<div class="moz-cite-prefix">Le 22/03/2024 à 20:24, Ulises Ibarra
via PROJ a écrit :<br>
</div>
<blockquote type="cite"
cite="mid:CAP=Ak6htX4L+t1jiQ73_8pvFnoXK0-jz9GPA_3Gf-s_=CuScSw@mail.gmail.com">
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<div dir="ltr">Hello:<br>
Continuing with the attempt to change from ellipsoidal heights
to orthometric heights. I executed the instruction:<br>
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<div>echo 578174.247 3593725.312 1295.083 2010.0 | cct
+proj=pipeline +step +inv +proj=utm +zone=11 +ellps=WGS84
+step +proj=utm +zone=11 +ellps=WGS84 +proj=vgridshift
+grids=/nubes/geoides/GGM10_GEO.gtx<br>
578174.2470 3593725.3120 1295.0830 2010.0000</div>
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</blockquote>
<p>Steps 2 and 3 should be inverted, and here's a missing +step
keyword. It should rather be something like <br>
</p>
<p>+proj=pipeline +step +inv +proj=utm +zone=11 +ellps=WGS84 +step
+proj=vgridshift +grids=/nubes/geoides/GGM10_GEO.gtx +step
+proj=utm +zone=11 +ellps=WGS84 <br>
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<p>Even<span style="white-space: pre-wrap">
</span></p>
<pre class="moz-signature" cols="72">--
<a class="moz-txt-link-freetext" href="http://www.spatialys.com">http://www.spatialys.com</a>
My software is free, but my time generally not.</pre>
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