issue_comments: 396662676

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https://github.com/pydata/xarray/issues/2227#issuecomment-396662676 https://api.github.com/repos/pydata/xarray/issues/2227 396662676 MDEyOklzc3VlQ29tbWVudDM5NjY2MjY3Ng== 5635139 2018-06-12T17:02:34Z 2018-06-12T17:02:34Z MEMBER

@rabernat that's a good solution where it's a slice

When is a time that it needs to align a bool array? If you try and pass an array of unequal length, it doesn't work anyway:

```python In [12]: ds.a.isel(time=time_filter[:-1])

IndexError: Boolean array size 54999999 is used to index array with shape (55000000,). ```

 
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