issue_comments: 163756773

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https://github.com/pydata/xarray/issues/674#issuecomment-163756773 https://api.github.com/repos/pydata/xarray/issues/674 163756773 MDEyOklzc3VlQ29tbWVudDE2Mzc1Njc3Mw== 1217238 2015-12-10T21:38:08Z 2015-12-10T21:38:08Z MEMBER

I'm sort of on the fence :). Pandas actually does (1), so there is some precedence for this:

``` In [12]: import pandas as pd

In [13]: df = pd.DataFrame({'x': list('abc')})

In [14]: df Out[14]: x 0 a 1 b 2 c

In [15]: pd.DataFrame(df, index=[1, 2]) Out[15]: x 1 b 2 c ```

That said, I know this has been a point of confusion for new pandas users, and I do like the current property of the Dataset constructor that it never removes data via alignment.

 
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