Hi everyone, I maintain a set of Docker containers of PostGIS and currently I'm working on a new release with updated version of the stack, which include PROJ 6, GDAL 3, PostgreSQL 11.5, and PostGIS 2.5.3. I know PROJ 6 is a game changer, and all the work I've done in the past configuring PROJ 4 to my country (Spain) transformations with GSB grids might have been deprecated. It appears so! Hopefully, after attempting a lot of things, I was able to make PROJ 6 work nicely with the GSB by providing a resource epsg file.
My hopes were that, once PROJ 6 was in place, GDAL 3 would make use of it for gdaltransform, but somehow GDAL is not playing nicely with PROJ 6 and transformations are not using the grids. If someone can shed some light regarding this issues, I'll be most grateful: - what is the relation between GDAL 3 and PROJ 6? I mean, if cs2cs is using the grid to transform, shouldn't GDAL rely on PROJ for reprojection and do it well too? - if GDAL has to be configured independently, what's the proper way to attach a grid to a EPSG code so reprojections using the epsg:XXXXX syntax would work with the grid? Many thanks in advance for any help you can provide me, I'm pretty lost! --- Juan Pedro Pérez Alcántara [email protected]
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