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id node_id number title user state locked assignee milestone comments created_at updated_at ▲ closed_at author_association active_lock_reason draft pull_request body reactions performed_via_github_app state_reason repo type
1692597701 I_kwDOAMm_X85k4v3F 7808 Default behaviour of `min_count` wrong with flox dcherian 2448579 closed 0     0 2023-05-02T15:04:11Z 2023-05-10T02:39:45Z 2023-05-10T02:39:45Z MEMBER      

What happened?

```python with xr.set_options(display_style="text", use_flox=False): with xr.set_options(use_flox=False): display( xr.DataArray( data=np.array([np.nan, 1, 1, np.nan, 1, 1]), dims="x", coords={"labels": ("x", np.array([1, 2, 3, 1, 2, 3]))}, ) .groupby("labels") .sum() )

with xr.set_options(use_flox=True):
    display(
        xr.DataArray(
            data=np.array([np.nan, 1, 1, np.nan, 1, 1]),
            dims="x",
            coords={"labels": ("x", np.array([1, 2, 3, 1, 2, 3]))},
        )
        .groupby("labels")
        .sum()
    )

```

```

without flox

<xarray.DataArray (labels: 3)> array([0., 2., 2.]) Coordinates: * labels (labels) int64 1 2 3

with flox

<xarray.DataArray (labels: 3)> array([nan, 2., 2.]) Coordinates: * labels (labels) int64 1 2 3 ```

What did you expect to happen?

The same answer. We should set min_count=0 when min_count is None

Minimal Complete Verifiable Example

No response

MVCE confirmation

  • [ ] Minimal example — the example is as focused as reasonably possible to demonstrate the underlying issue in xarray.
  • [ ] Complete example — the example is self-contained, including all data and the text of any traceback.
  • [ ] Verifiable example — the example copy & pastes into an IPython prompt or Binder notebook, returning the result.
  • [ ] New issue — a search of GitHub Issues suggests this is not a duplicate.

Relevant log output

No response

Anything else we need to know?

No response

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   completed xarray 13221727 issue
1692612622 PR_kwDOAMm_X85PmMOy 7809 Fix `min_count` behaviour with flox. dcherian 2448579 closed 0     0 2023-05-02T15:13:17Z 2023-05-10T02:39:45Z 2023-05-10T02:39:43Z MEMBER   0 pydata/xarray/pulls/7809
  • [x] Closes #7808
  • [x] Tests added
  • [x] User visible changes (including notable bug fixes) are documented in whats-new.rst
 
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     xarray 13221727 pull

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