[PROJ] Big grid files

[Greg Troxel]

Jack Riley - NOAA Federal via PROJ <proj at lists.osgeo.org> writes:

> I read in
> https://proj.org/en/stable/specifications/geodetictiffgrids.html#general-description
> that
> files hosted on the CDN support Signed/Unsigned Int 16 and Int 32.  Might
> this be expanded to include Int 8, given its support in GDAL>=3.7.0:
> https://gdal.org/en/stable/development/rfc/rfc87_signed_int8.html

Are you asking:

  If I want to submit a file to be part of the dataset/CDN-contents, and
  it's in Int8, is that ok?

or do you mean something else?

> I'm working with a PROJ auxiliary database that includes a lot of large
> transformation grids that scale to Int8 with sub-mm precision.

That sounds like the total range of values across the entire grid is
only 100 mm or so.  Is that what you mean?