Le 22/03/2024 à 20:24, Ulises Ibarra via PROJ a écrit :
Hello:
Continuing with the attempt to change from ellipsoidal heights to
orthometric heights. I executed the instruction:
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
578174.2470 3593725.3120 1295.0830 2010.0000
Steps 2 and 3 should be inverted, and here's a missing +step keyword. It
should rather be something like
+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
Even
--
http://www.spatialys.com
My software is free, but my time generally not.
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