Michael Sumner

> > DGGS is a strange world somewhere between vector and raster representations. I think it is within the scope of both geoarrow and [geozarr](https://github.com/zarr-developers/geozarr-spec). The DGGS OGC API covers...

ah good point should have tried that (fwiw I am not seeing a speed up on "normal" VM or slurm with ThreadPoolExecutor so I was using dask as a way...

I *think*, because the coord vars have these filename objects in the encoding ``` d0 = open_virtual_dataset(s3files[0]) d0.lon.encoding {'chunksizes': (1440,), 'fletcher32': False, 'shuffle': True, 'preferred_chunks': {'lon': 1440}, 'zlib': True, 'complevel':...

I don't know, had a quick try but can't navigate all the new idioms for setting endpoint. This is not a priority for me, fwiw - the old way without...

could you expand on what this is? I can't understand it, the point or line case is obvious per vertex but I don't get this, got an example?

ah, ok thanks! that would be like resizing the raster with alg bilinear first, but efficient by only doing it within the polygon/s that's an interesting case, like using a...

classic example ``` int crsOSGB ; crsOSGB:grid_mapping_name = "transverse_mercator"; crsOSGB:semi_major_axis = 6377563.396 ; crsOSGB:inverse_flattening = 299.3249646 ; crsOSGB:longitude_of_prime_meridian = 0.0 ; crsOSGB:latitude_of_projection_origin = 49.0 ; crsOSGB:longitude_of_central_meridian = -2.0 ; crsOSGB:scale_factor_at_central_meridian...

Ok, doesn't change my stance though. If Zarr is just a container and provides no guidance about smart and efficient and robust relations and positions then the world will never...

I'm sorry, that was too strong, and out of place here. I need to describe my take properly elsewhere, and find how to contribute here 🙏

Is the rast() call made with the prefix '/vsicurl' or '/vsis3/'? If it isn't GDAL will whole-download the file behind the scenes, which sounds like what you're seeing (I don't...