v2024.03.0

What's Changed

• new whats-new section by @keewis in #8767
• [skip-ci] NamedArray: Add lazy indexing array refactoring plan by @dcherian in #8775
• refactor indexing.py: introduce .oindex for Explicitly Indexed Arrays by @andersy005 in #8750
• Fixing issue #8770: Improved frequency parameter logic to set it to 'D' only if periods, start, or end are None. by @rjavierch in #8774
• Bump the actions group with 2 updates by @dependabot in #8785
• introduce .vindex property for Explicitly Indexed Arrays by @andersy005 in #8780
• Migrate treenode module. by @flamingbear in #8757
• Fix non-nanosecond casting behavior for expand_dims by @spencerkclark in #8782
• fix: remove Coordinate from all in xarray/init.py by @hassec in #8791
• tokenize() should ignore difference between None and {} attrs by @crusaderky in #8797
• Bump the actions group with 2 updates by @dependabot in #8804
• Grouper object design doc by @dcherian in #8510
• Refactor Grouper objects by @dcherian in #8776
• DOC: link to zarr.convenience.consolidate_metadata by @raybellwaves in #8816
• Update documentation for clarity by @staadecker in #8817
• Bump the actions group with 1 update by @dependabot in #8818
• try to get the upstream-dev CI to complete again by @keewis in #8823
• Do not attempt to broadcast when global option arithmetic_broadcast=False by @etienneschalk in #8784
• Make list_chunkmanagers more resilient to broken entrypoints by @hmaarrfk in #8736
• Add dask-expr to environment-3.12.yml by @dcherian in #8827
• [skip-ci] Add dask-expr dependency to doc.yml by @andersy005 in #8835
• Add dask-expr for windows envs by @dcherian in #8837
• [skip-ci] Fix upstream-dev env by @dcherian in #8839
• Return a dataclass from Grouper.factorize by @dcherian in #8777
• Expand use of .oindex and .vindex by @andersy005 in #8790
• correctly encode/decode _FillValues/missing_values/dtypes for packed data by @kmuehlbauer in #8713
• Support pandas copy-on-write behaviour by @dcherian in #8846
• Implement setitem syntax for .oindex and .vindex properties by @andersy005 in #8845
• FIX: do not cast _FillValue/missing_value in CFMaskCoder if _Unsigned is provided by @kmuehlbauer in #8852
• FIX: adapt handling of copy keyword argument in scipy backend for numpy >= 2.0dev by @kmuehlbauer in #8851
• pandas 3 MultiIndex fixes by @dcherian in #8847
• increase typing annotations coverage in xarray/core/indexing.py by @andersy005 in #8857
• upstream-dev CI: Fix interp and cumtrapz by @dcherian in #8861
• numpy 2.0 copy-keyword and trapz vs trapezoid by @kmuehlbauer in #8865
• Handle .oindex and .vindex for the PandasMultiIndexingAdapter and PandasIndexingAdapter by @andersy005 in #8869
• Update docs on view / copies by @ks905383 in #8744
• Opt out of auto creating index variables by @TomNicholas in #8711
• groupby: Dispatch quantile to flox. by @dcherian in #8720
• warn and return bytes undecoded in case of UnicodeDecodeError in h5netcdf-backend by @kmuehlbauer in #8874
• Migrate datatree.py module into xarray.core. by @owenlittlejohns in #8789
• Don't allow overwriting indexes with region writes by @dcherian in #8877
• Allow multidimensional variable with same name as dim when constructing dataset via coords by @TomNicholas in #8886
• Optimize writes to existing Zarr stores. by @dcherian in #8875
• Add dt.date to plottable types by @saschahofmann in #8873
• Check for aligned chunks when writing to existing variables by @max-sixty in #8459
• Avoid in-place multiplication of a large value to an array with small integer dtype by @Illviljan in #8867
• Add typing to test_groupby.py by @Illviljan in #8890
• 2024.03.0: Add whats-new by @dcherian in #8891

New Contributors

• @rjavierch made their first contribution in #8774
• @hassec made their first contribution in #8791
• @staadecker made their first contribution in #8817
• @ks905383 made their first contribution in #8744
• @owenlittlejohns made their first contribution in #8789
• @saschahofmann made their first contribution in #8873

Full Changelog: v2024.02.0...v2024.03.0