issues: 365946491

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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
365946491 MDU6SXNzdWUzNjU5NDY0OTE= 2457 name of array disappear when apply "where" filter with Datarray but not with np.array 5918182 closed 0     2 2018-10-02T15:12:30Z 2019-02-11T17:35:02Z 2019-02-11T17:35:02Z NONE      

I was trying to select by non dimensional coordinate, and I found that "where" works well, but it erase the name of my datarray only if filtering is done with another datarray as a non dimensional coordinate ``` import xarray as xr temp = 15 + 8 * np.random.randn(2, 2, 3)

precip = 10 * np.random.rand(2, 2, 3)

lon = [[-99.83, -99.32], [-99.79, -99.23]]

lat = [[42.25, 42.21], [42.63, 42.59]] ds = xr.Dataset({'temperature': (['x', 'y', 'time'], temp)}, coords={'lon': (['x', 'y'], lon), 'lat': (['x', 'y'], lat), 'precipitation': (['x', 'y', 'time'], precip), 'time': pd.date_range('2014-09-06', periods=3), 'reference_time': pd.Timestamp('2014-09-05')})

ds["temperature"].where(ds.precipitation>5).sum(axis=2).plot() this line would produce a label near color bar but only using a numpy array this happens as here ds["temperature"].where(ds.precipitation.values>5).sum(axis=2).plot() ```

Expected Output

I think that selecting with a datarray should not change the label of the data. Further I was expecting that as for "sel", "where" should change the title of the graph so that I know from the title that I performed a selection with where with a non dimensional coordinate

 
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