> On Dec 20, 2024, at 4:56 PM, Even Rouault via gdal-dev
> <gdal-dev@lists.osgeo.org> wrote:
>
> Besides reprocessing all of our existing
> grids,https://github.com/geotiffjs/geotiff.js/tree/master/src/compression
> seems to show that it doesn't support ZSTD, which would break at least our
> wonderful cdn.proj.org <http://cdn.proj.org/>interactive map
To throw a wrench into it...
geotiff.js has LERC support. Floating point LERC TIFFs compressed with a
MAX_Z_ERROR to one decimal better than the *stated precision* of the grids
would be smaller and more efficiently compressed/decompressed. By maybe a 1/3rd
over zstd and deflate.
See this great write-up by LINZ about the topic
https://github.com/linz/elevation/tree/master/docs/tiff-compression
Howard
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