FIX: correct retrieval of intermediate records in nexrad level2 reader

[kmuehlbauer]

• Closes NexradLevel2 Bug related to conflicting sizes for dimension #259
• Tests added
• Changes are documented in history.md

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.57%. Comparing base (4c68528) to head (406f42a).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #261   +/-   ##
=======================================
  Coverage   93.57%   93.57%           
=======================================
  Files          26       26           
  Lines        5041     5042    +1     
=======================================
+ Hits         4717     4718    +1     
  Misses        324      324           

Flag	Coverage Δ
notebooktests	78.97% <100.00%> (+<0.01%)	⬆️
unittests	93.15% <100.00%> (+<0.01%)	⬆️

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[kmuehlbauer]

@aladinor Do you have an idea why the one zarr notebook is failing?

https://github.com/openradar/xradar/actions/runs/13116296298/job/36591356758?pr=261

File ~/micromamba/envs/xradar-notebook-tests/lib/python3.12/site-packages/xarray/backends/zarr.py:741, in ZarrStore.__init__(self, zarr_group, mode, consolidate_on_close, append_dim, write_region, safe_chunks, write_empty, close_store_on_close, use_zarr_fill_value_as_mask, cache_members)
    727 def __init__(
    728     self,
    729     zarr_group,
   (...)
    738     cache_members: bool = True,
    739 ):
    740     self.zarr_group = zarr_group
--> 741     self._read_only = self.zarr_group.read_only
    742     self._synchronizer = self.zarr_group.synchronizer
    743     self._group = self.zarr_group.path

zarr = 3.0.2

[aladinor]

Hi @kmuehlbauer,

Zarr-Python V3 has changed the zarr. core.hierarchy.Group behavior which impacts datatree creation. I have been working on it. I already found a solution; however, now I have another issue when passing groups to xr.open_datatree(path, group="/path/to/group").

pydata/xarray@main...aladinor:xarray:dtree-zarrv3#:~:text=group_paths%3A%20list,store_member%2C

I am still working on it

[kmuehlbauer]

Ahh, what a mess ;-). Do you have an interim suggestion to at least get the notebooks/docs not failing?

[aladinor]

I think we can pin Zarr to V2 for now until we solve these incompatibilities

xradar/environment.yml

Line 31 in 4cf4d6d

- zarr

-  zarr<3.0