[PROJ] Which forms of TIFF compression are used for the CDN grids?

[Sean Gillies]

Thank you, Even! I've bookmarked the spec.

On Thu, Apr 4, 2024 at 11:47 AM Even Rouault <even.rouault at spatialys.com>
wrote:

> Hi Sean,
>
> This is actually documented at
> https://proj.org/en/9.4/specifications/geodetictiffgrids.html: "Files
> hosted on the CDN will use Compression
> <https://www.awaresystems.be/imaging/tiff/tifftags/compression.html> =
> DEFLATE or LZW" . I've also just verified that the reality matches the
> documented statement. We only use DEFLATE.
>
> Even
> Le 04/04/2024 à 19:43, Sean Gillies via PROJ a écrit :
>
> Hi all,
>
> I'm building some fiona and rasterio binary packages. They include PROJ,
> and TIFF to get the PROJ grids. On Windows, I'm relying on vcpkg for
> everything, and currently the liblzma port is broken. If I patch vcpkg to
> disable liblzma, will my builds be able to access data in the CDN grids?
>
> Thanks,
>
>

-- 
Sean Gillies
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