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GeoZarr Store Support (current spec)

Tool Can write Can read local storage Can read HTTP Can read S3 Can read Azure Blob Can read GCS
GDAL ？
QGIS ⚠️ ⚠️ ✅*
ArcGIS ✅ ✅ ✅ ✅
NetCDF Python ？ ✅
NCO ✅ ✅
Panoply n/a 🚫
Xarray ✅ ✅

GeoZarr Tool Interoperability (current spec)

Reader → Writer ↓ GDAL QGIS ArcGIS NetCDF Python NCO Panoply Xarray
GDAL n/a
QGIS n/a
ArcGIS n/a ✅
NetCDF n/a
NCO n/a ✅
Panoply n/a
Xarray ✅* ✅ ✅ ✅ ✅ n/a ✅

Sample data

netcdf like data (Written with Xarray): http://tinyurl.com/GLDAS-NOAH025-3H

https://beta.source.coop/zarr/geozarr-tests/

zarr-developers#36

Tools

GDAL (3.8.3)

QGIS (3.34.3)

With GDAL (3.8.1)

Can read from local storage, but can't read the CRS.

Can read from S3, but extremely slowly.

Can write, but with incorrect nodata value and doesn't write multiple variables to a file.

ArcGIS (3.2.1)

NetCDF Python Library (1.6.2)

Should be able to read from S3, but depends upon configuring the NetCDF C library with the NCZarr implementation to read from S3. Attempting to read from S3 triggered this message: s3 scheme requires that netCDF be configured with –enable-nczarr-s3 option .

NCO (5.1.9)

Ticket: zarr-developers#40

Should be able to read from S3, but depends upon configuring the NetCDF C library with the NCZarr implementation to read from S3. Attempting to read from S3 triggered this message: s3 scheme requires that netCDF be configured with –enable-nczarr-s3 option .

Panoply (5.2.9)

Xarray (2024.1.1)

Can read and write, but only if using GDAL <3.6 or no GDAL. Does not work with GDAL 3.8.