El vie, 6 dic 2024 a las 17:59, Greg Troxel via PROJ (<proj@lists.osgeo.org>) escribió:
> Ulises Ibarra via PROJ <proj@lists.osgeo.org> writes: > > > echo 480037.249 2143783.696 2271.294 | cct +proj=pipeline +step +inv > > +proj=utm +zone=14 +ellps=GRS80 +k=0.9996439573 +step +proj=tmerc > > +lat_0=19.388187333 +lon_0=-99.190762728 +x_0=479969.231 +y_0=2143791.499 > > +ellps=GRS80 +k=1 > > I am far from an expert here, but "UTM zone 14" defines everything about > the projection, so I don't understand why you are needing to specify the > k. Also sort of the ellipse, but people use UTM with both NAD83 and > WGS84, and you are using it with ITRF2008. > * I need to specify in detail because I think I have no idea what I'm doing :P. * So I understand that the k is not necessary to use in the command. Is this correct? * I don't understand what you said about there being people who use both NAD83 and WGS84 and I am using ITRF2008, could you explain it better? Maybe I shouldn't specify the ellipsoid? > > https://www.oc.nps.edu/oc2902w/maps/utmups.pdf > > may be useful > _______________________________________________ > PROJ mailing list > PROJ@lists.osgeo.org > https://lists.osgeo.org/mailman/listinfo/proj >
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