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chunks returns None for quantified array

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
48/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
python
Domain
data

Research direction

Start with the documented DataArray.chunks behavior and reproduce the quantified-array example using pint.quantify() and pint.chunk(1). Trace how the pint accessor wraps the underlying data and determine why chunks becomes None. Done means the example reports its dask chunking consistently, with a regression test covering quantified arrays.

Written by the indexing model from the issue text.

Description

DataArray.chunks checks the type of the DataArray.data and sees that it's a pint Quantity rather than a dask array, so it returns None:

xr.DataArray([1,2,3], dims=['x'], attrs={'units': 'm'}).pint.quantify().pint.chunk(1).chunks

None

xarray 2026.1.0, pint-xarray 0.6.0

Dominant language
Python
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119
Forks
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