[PROJ] What is the syntax for a vertical datum change?

[Even Rouault]

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.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/proj/attachments/20240315/df98eb2d/attachment.htm>