26 Pull requests merged by 14 people

• Fix performance regression in interp from #9881

  #10370 merged May 30, 2025

• html repr: improve style for dropdown sections

  #10354 merged May 30, 2025

• Grouper tweaks.

  #10362 merged May 30, 2025

• Docs: Add links to getting help mermaid diagram

  #10324 merged May 30, 2025

• Enforce ruff/flynt rules (FLY)

  #10375 merged May 30, 2025

• Add missing AbstractWritableDataStore base methods and arguments

  #10343 merged May 30, 2025

• Improve html repr in dark mode (Jupyterlab + Xarray docs)

  #10353 merged May 30, 2025

• Pin Mypy to 1.15

  #10378 merged May 30, 2025

• use numpy dtype exposed by zarr array instead of metadata.data_type

  #10348 merged May 30, 2025

• Fix doc typo for caption "Interoperability"

  #10374 merged May 30, 2025

• Implement cftime vectorization as discussed in PR #8322

  #8324 merged May 30, 2025

• Enforce ruff/flake8-pyi rules (PYI)

  #10359 merged May 29, 2025

• Apply assorted ruff/Pylint rules (PL) / Enforce PLE rules

  #10366 merged May 29, 2025

• (fix): pandas extension array repr for int64[pyarrow]

  #10317 merged May 29, 2025

• Enforce ruff/flake8-implicit-str-concat rules (ISC)

  #10368 merged May 29, 2025

• Enforce ruff/refurb rules (FURB)

  #10367 merged May 28, 2025

• Ignore ruff/Pyflakes rule F401 more precisely

  #10369 merged May 28, 2025

• Apply assorted ruff/flake8-simplify rules (SIM)

  #10364 merged May 28, 2025

• Apply assorted ruff/flake8-pytest-style rules (PT)

  #10363 merged May 28, 2025

• Fix "a array" misspelling

  #10365 merged May 28, 2025

• ruff: default rule set

  #10360 merged May 28, 2025

• apply_ufunc: don't modify attrs on input variables

  #10330 merged May 27, 2025

• Avoid copying vectorized indexes

  #10316 merged May 27, 2025

• Docs: User Guide for Complex Numbers

  #10235 merged May 27, 2025

• Disallow standard calendar np.datetime64 encoding prior to reform

  #10352 merged May 26, 2025

• The URL in CONTRIBUTING.md was broken and didn't automatically redirect.

  #10351 merged May 24, 2025

7 Pull requests opened by 6 people

• Clean-up indexing adapter classes

  #10355 opened May 26, 2025

• Update concat for multi-variable indexes.

  #10371 opened May 29, 2025

• add **encoding** argument in netCDF4 backend

  #10372 opened May 29, 2025

• Allow for inline_array specification in open_zarr through from_array_kwargs

  #10373 opened May 29, 2025

• Clean up backend indexing some more

  #10376 opened May 30, 2025

• Improve support for pandas Extension Arrays (#10301)

  #10380 opened May 30, 2025

• Fix reindex on Dataset from MultiIndex DataFrame with RuntimeError

  #10381 opened May 30, 2025

9 Issues closed by 4 people

• Possible performance regression in `interp()` behaviour

  #10287 closed May 30, 2025

• expanded attrs makes HTML repr confusing to read

  #4251 closed May 30, 2025

• xarray 2025.4.0: issues with grouping using external arrays

  #10356 closed May 30, 2025

• Documentation rendering issues (dark mode)

  #8097 closed May 30, 2025

• duplicate dates when converting from standard to 360 calendar on partial files.

  #8086 closed May 28, 2025

• Add_And_Change

  #9959 closed May 28, 2025

• module_available gives inaccurate version info

  #10335 closed May 27, 2025

• apply_ufunc drops passed DataArray's attrs when keep_attrs=False

  #8047 closed May 27, 2025

• `conjugate` not supported on Dask arrays

  #10302 closed May 27, 2025

5 Issues opened by 5 people

• Silent bug when indexing with boolean scalars

  #10379 opened May 30, 2025

• Unconstrained forwarding of backend keyword arguments

  #10377 opened May 30, 2025

• Converting a NetCDF to Zarr and back changes the dtype of some variable attributes

  #10361 opened May 28, 2025

• Rename "Contribute" section of docs to "Development"?

  #10358 opened May 28, 2025

• Support an `encoding` parameter when reading netCDF files with xarray

  #10357 opened May 28, 2025

25 Unresolved conversations

Sometimes conversations happen on old items that aren’t yet closed. Here is a list of all the Issues and Pull Requests with unresolved conversations.

• Add asynchronous load method

  #10327 commented on May 30, 2025 • 26 new comments

• Open mfdataset enchancement

  #9955 commented on May 30, 2025 • 12 new comments

• (fix): disallow `NumpyExtensionArray`

  #10334 commented on May 30, 2025 • 9 new comments

• Avoid unsafe casts from float to unsigned int

  #9964 commented on May 30, 2025 • 7 new comments

• New defaults for `concat`, `merge`, `combine_*`

  #10062 commented on May 30, 2025 • 4 new comments

• [do not merge] test new dtypes in zarr-python

  #10332 commented on May 30, 2025 • 3 new comments

• Add copy keyword to to_dataframe

  #10345 commented on May 27, 2025 • 1 new comment

• Fix: coerce unknown types to O dtype

  #10339 commented on May 27, 2025 • 0 new comments

• Automatic Dask-Zarr chunk alignment

  #10336 commented on May 31, 2025 • 0 new comments

• rewrite of the `Coordinates` section in the data structures guide

  #10323 commented on May 28, 2025 • 0 new comments

• (fix): docs for extension array changes

  #10322 commented on May 28, 2025 • 0 new comments

• Nightly Hypothesis tests failed

  #9698 commented on May 31, 2025 • 0 new comments

• ⚠️ Nightly upstream-dev CI failed ⚠️

  #10261 commented on May 31, 2025 • 0 new comments

• reindex fails on Dataset from MultiIndex DataFrame with RuntimeError

  #10347 commented on May 30, 2025 • 0 new comments

• Regression in DataArrays created from Pandas

  #10301 commented on May 30, 2025 • 0 new comments

• memory bug with Dataset starting in version 2025.3.0 in combination with dask

  #10350 commented on May 29, 2025 • 0 new comments

• Fancy isel on LazilyIndexedArray allocates memory of about the size of backing dataset

  #10311 commented on May 28, 2025 • 0 new comments

• Test failure on RISC-V platform

  #9815 commented on May 28, 2025 • 0 new comments

• netCDF IO crash

  #9125 commented on May 28, 2025 • 0 new comments

• Interpolate_na: Rework 'limit' argument documentation/implementation

  #7665 commented on May 28, 2025 • 0 new comments

• DataArray.idxmax converts coordinates into float64 by default

  #7527 commented on May 28, 2025 • 0 new comments

• pandas.errors.InvalidIndexError raised when running computation in parallel using dask

  #7059 commented on May 28, 2025 • 0 new comments

• Cannot export dataset with categorical index in 2025.4.0

  #10312 commented on May 27, 2025 • 0 new comments

• Dimensions re-defined in netCDF groups

  #10241 commented on May 27, 2025 • 0 new comments

• Thread-safety in xarray

  #9836 commented on May 25, 2025 • 0 new comments