pydata/xarray v2024.09.0 on GitHub

This release drops support for Python 3.9, and adds support for grouping by multiple arrays, while providing numerous performance improvements and bug fixes.

Thanks to the 33 contributors to this release:
Alfonso Ladino, Andrew Scherer, Anurag Nayak, David Hoese, Deepak Cherian, Diogo Teles Sant'Anna, Dom, Elliott Sales de Andrade, Eni, Holly Mandel, Illviljan, Jack Kelly, Julius Busecke, Justus Magin, Kai Mühlbauer, Manish Kumar Gupta, Matt Savoie, Maximilian Roos, Michele Claus, Miguel Jimenez, Niclas Rieger, Pascal Bourgault, Philip Chmielowiec, Spencer Clark, Stephan Hoyer, Tao Xin, Tiago Sanona, TimothyCera-NOAA, Tom Nicholas, Tom White, Virgile Andreani, oliverhiggs and tiago

What's Changed

post-release cleanup by @keewis in #9290
Fix DataTree.from_dict to be insensitive to insertion order by @TomNicholas in #9292
Increased verbosity for Value Error raised if backend not installed by @jbusecke in #9294
DOC: Add note to docs on DataTree root-group naming conventions by @kmuehlbauer in #9298
DOC: fix minimum dependency versions in getting started guide by @kmuehlbauer in #9306
Add grib2io to ecosystem.rst by @TimothyCera-NOAA in #9304
added kerchunk as backend documentation by @Anu-Ra-g in #9163
cftime: Fix resampling when time contains 0001-01-01 by @dcherian in #9116
Add missing spacing in documentation by @domdent in #9318
Use assert_duckarray_allclose instead of rounding the array by @Illviljan in #9313
Fix some dask tests by @dcherian in #9321
Verbose error handling for non-valid duckarrays by @Illviljan in #9314
Fix pirate arrgragation by @clausmichele in #9328
Remove ignores due to pandas-stubs by @Illviljan in #9329
Use duck array ops for around and round by @tomwhite in #9326
fix: github workflow vulnerable to script injection by @diogoteles08 in #9331
xfail np.cross tests; force numpy>=2 in main CI by @dcherian in #9356
try to fix scheduled hypothesis test by @dcherian in #9358
Revise by @Tao-VanJS in #9357
drop support for python=3.9 by @keewis in #8937
whats-new entry for dropping python 3.9 by @keewis in #9359
Fix rechunking to a frequency with empty bins. by @dcherian in #9364
Revise by @Tao-VanJS in #9366
Adding open_groups to BackendEntryPointEngine, NetCDF4BackendEntrypoint, and H5netcdfBackendEntrypoint by @eni-awowale in #9243
Remove duplicate word from docs by @JackKelly in #9367
Revise by @Tao-VanJS in #9371
Make chunk manager an option in set_options by @tomwhite in #9362
Add flaky to TestNetCDF4ViaDaskData by @Illviljan in #9373
Improve error message for missing coordinate index by @nicrie in #9370
Improve error message on ds['x', 'y'] by @max-sixty in #9375
Fix tests on big-endian systems by @QuLogic in #9380
passing missing parameters to ZarrStore.open_store when opening a datatree by @aladinor in #9377
Combine UnsignedIntegerCoder and CFMaskCoder by @djhoese in #9274
refactor GroupBy internals by @dcherian in #9389
Extend padding functionalities by @tsanona in #9353
pyarrow dependency added to doc environment by @hollymandel in #9394
numpy 2 compatibility in the pydap backend by @Mikejmnez in #9391
Adds copy parameter to array for numpy 2.0 by @andrew-s28 in #9393
Encode/decode property tests use variables() by @dcherian in #9401
GroupBy(multiple groupers) by @dcherian in #9372
Use python-build instead of build in benchmark workflow by @philipc2 in #9406
fix the failing pre-commit.ci runs by @keewis in #9411
[skip-ci] Speed up docs build by limiting toctrees by @dcherian in #9395
Accessibility: Add keyboard handling for XArray HTML view by @srijan55 in #9412
Don't specify a subdir in mypy CI cli by @max-sixty in #9416
Upgrade mypy to 1.11 by @max-sixty in #9417
Use EllipsisType by @max-sixty in #9418
Byte attr support by @hollymandel in #9407
copy the data of the DatetimeIndex in the Dataset.chunk-by-frequency tests by @keewis in #9419
Don't return IndexVariable with .dt accessor by @dcherian in #9415
GroupBy(multiple strings) by @dcherian in #9414
Avoid deep-copy when constructing groupby codes by @dcherian in #9429
Always include at least one category in random test data by @shoyer in #9436
Bump minimum versions for dependencies by @dcherian in #9434
Shallow copy parent and children in DataTree constructor by @TomNicholas in #9297
Support additional dtypes in resample by @oliverhiggs in #9413
Disallow passing a DataArray as data into the DataTree constructor by @shoyer in #9444
DataTree should not be "Generic" by @shoyer in #9445
Fix typos across the code, doc and comments by @Armavica in #9443
Make the first argument in DataTree.from_dict positional only by @shoyer in #9446
Add ASV for datatree.from_dict by @Illviljan in #9459
Implement DataTree.__delitem__ by @TomNicholas in #9453
Fix inheritance in DataTree.copy() by @shoyer in #9457
Remove parent argument from DataTree.init by @TomNicholas in #9465
Add days_in_year and decimal_year to dt accessor by @aulemahal in #9105
Repo checker by @Armavica in #9450
Update DataTree repr to indicate inheritance by @shoyer in #9470
Rename DataTree's "ds" and "data" to "dataset" by @shoyer in #9476
Fix DataTree.coords.__setitem__ by adding DataTreeCoordinates class by @TomNicholas in #9451
Release notes for v2024.09.0 by @owenlittlejohns in #9480

New Contributors

@TimothyCera-NOAA made their first contribution in #9304
@Anu-Ra-g made their first contribution in #9163
@domdent made their first contribution in #9318
@diogoteles08 made their first contribution in #9331
@Tao-VanJS made their first contribution in #9357
@JackKelly made their first contribution in #9367
@tsanona made their first contribution in #9353
@hollymandel made their first contribution in #9394
@Mikejmnez made their first contribution in #9391
@andrew-s28 made their first contribution in #9393
@philipc2 made their first contribution in #9406
@srijan55 made their first contribution in #9412
@oliverhiggs made their first contribution in #9413
@Armavica made their first contribution in #9443

Full Changelog: v2024.07.0...v2024.09.0