issue_comments: 394754176

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https://github.com/pydata/xarray/pull/2104#issuecomment-394754176 https://api.github.com/repos/pydata/xarray/issues/2104 394754176 MDEyOklzc3VlQ29tbWVudDM5NDc1NDE3Ng== 1217238 2018-06-05T15:30:23Z 2018-06-05T15:30:23Z MEMBER

Do we have other methods that behave similarly?

We do the same thing for aggregations like mean(), behavior originally copied from pandas: http://pandas.pydata.org/pandas-docs/version/0.22/generated/pandas.DataFrame.mean.html

We could add a numeric_only=True argument (like we do for reduction methods) to make this behavior more obvious and allow it to be controlled.

 
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