- Skip Python 3.9. It requires pydap, which is not available any
more.
- Update to 2024.2.0
* This release brings size information to the text repr, changes
to the accepted frequency strings, and various bug fixes.
## New Features
* Added a simple nbytes representation in DataArrays and Dataset
repr. (GH8690, PR8702). By Etienne Schalk.
* Allow negative frequency strings (e.g. "-1YE"). These strings
are for example used in date_range(), and cftime_range()
(PR8651). By Mathias Hauser.
* Add NamedArray.expand_dims(), NamedArray.permute_dims() and
NamedArray.broadcast_to() (PR8380) By Anderson Banihirwe.
* Xarray now defers to flox’s heuristics to set the default
method for groupby problems. This only applies to flox>=0.9. By
Deepak Cherian.
* All quantile methods (e.g. DataArray.quantile()) now use
numbagg for the calculation of nanquantiles (i.e., skipna=True)
if it is installed. This is currently limited to the linear
interpolation method (method=’linear’). (GH7377, PR8684) By
Marco Wolsza.
## Breaking changes
* infer_freq() always returns the frequency strings as defined in
pandas 2.2 (GH8612, PR8627). By Mathias Hauser.
* Deprecations
* The dt.weekday_name parameter wasn’t functional on modern
pandas versions and has been removed. (GH8610, PR8664) By Sam
Coleman.
## Bug fixes
* Fixed a regression that prevented multi-index level coordinates
being serialized after resetting or dropping the multi-index
(GH8628, PR8672). By Benoit Bovy.
* Fix bug with broadcasting when wrapping array API-compliant
classes. (GH8665, PR8669) By Tom Nicholas.
* Ensure DataArray.unstack() works when wrapping array
API-compliant classes. (GH8666, PR8668) By Tom Nicholas.
* Fix negative slicing of Zarr arrays without dask installed.
(GH8252) By Deepak Cherian.
* Preserve chunks when writing time-like variables to zarr by
enabling lazy CF encoding of time-like variables (GH7132,
GH8230, GH8432, PR8575). By Spencer Clark and Mattia Almansi.
* Preserve chunks when writing time-like variables to zarr by
enabling their lazy encoding (GH7132, GH8230, GH8432, PR8253,
PR8575; see also discussion in PR8253). By Spencer Clark and
Mattia Almansi.
* Raise an informative error if dtype encoding of time-like
variables would lead to integer overflow or unsafe conversion
from floating point to integer values (GH8542, PR8575). By
Spencer Clark.
* Raise an error when unstacking a MultiIndex that has duplicates
as this would lead to silent data loss (GH7104, PR8737). By
Mathias Hauser.
- Release 2024.1.1
## Breaking changes
* Following pandas, infer_freq() will return "YE", instead of "Y"
(formerly "A"). This is to be consistent with the deprecation
of the latter frequency string in pandas 2.2. This is a follow
up to PR8415 (GH8612, PR8642). By Mathias Hauser.
## Deprecations
* Following pandas, the frequency string "Y" (formerly "A") is
deprecated in favor of "YE". These strings are used, for
example, in date_range(), cftime_range(), DataArray.resample(),
and Dataset.resample() among others (GH8612, PR8629). By
Mathias Hauser.
- Release 2024.1.0
* This release brings support for weights in correlation and
covariance functions, a new DataArray.cumulative aggregation,
improvements to xr.map_blocks, an update to our minimum
dependencies, and various bugfixes.
## New Features
* xr.cov() and xr.corr() now support using weights (GH8527,
PR7392). By Llorenç Lledó.
* Accept the compression arguments new in netCDF 1.6.0 in the
netCDF4 backend. See netCDF4 documentation for details. Note
that some new compression filters needs plugins to be installed
which may not be available in all netCDF distributions. By
Markel García-Díez. (GH6929, PR7551)
* Add DataArray.cumulative() & Dataset.cumulative() to compute
cumulative aggregations, such as sum, along a dimension — for
example da.cumulative('time').sum(). This is similar to pandas’
.expanding, and mostly equivalent to .cumsum methods, or to
DataArray.rolling() with a window length equal to the dimension
size. By Maximilian Roos. (PR8512)
* Decode/Encode netCDF4 enums and store the enum definition in
dataarrays’ dtype metadata. If multiple variables share the
same enum in netCDF4, each dataarray will have its own enum
definition in their respective dtype metadata. By Abel Aoun.
(GH8144, PR8147)
## Deprecations
* The squeeze kwarg to GroupBy is now deprecated. (GH2157,
PR8507) By Deepak Cherian.
## Bug fixes
* Support non-string hashable dimensions in xarray.DataArray
(GH8546, PR8559). By Michael Niklas.
* Reverse index output of bottleneck’s rolling
move_argmax/move_argmin functions (GH8541, PR8552). By Kai
Mühlbauer.
* Vendor SerializableLock from dask and use as default lock for
netcdf4 backends (GH8442, PR8571). By Kai Mühlbauer.
* Add tests and fixes for empty CFTimeIndex, including broken
html repr (GH7298, PR8600). By Mathias Hauser.
- Create subpackages for the python [extras], test dependencies
with _multibuild