Mr. Even, thanks You very much. El vie, 15 de mar de 2024, 1:42 a. m., Even Rouault < even.roua...@spatialys.com> escribió:
> > Le 15/03/2024 à 06:27, Ulises Ibarra via PROJ a écrit : > > Hello: > I am trying to change the vertical datum of a LIDAR LAS file. But first I > must understand the syntax of proj, but I can't understand it. > > If I use the following expression: > echo 747194.732 2307402.892 2037.133 | proj +proj=vgridshift > +grids=C:/clouds/geoids/GGM10_GEO.gtx > > "proj" is a legacy tool only for 2D cartographic projections. You want to > use cct instead: https://proj.org/en/9.4/apps/cct.html > > -- http://www.spatialys.com > My software is free, but my time generally not. > >
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