issue_comments: 163748764

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https://github.com/pydata/xarray/issues/674#issuecomment-163748764 https://api.github.com/repos/pydata/xarray/issues/674 163748764 MDEyOklzc3VlQ29tbWVudDE2Mzc0ODc2NA== 5635139 2015-12-10T21:04:18Z 2015-12-10T21:18:08Z MEMBER

I don't see any obvious reason reason why coords should be treated differently than data_vars as far as data alignment in the Dataset constructor goes.

Two possibilities: 1. coords would take precedence, and all the DataArrays would be aligned to those. This is equivalent to the second example where arrays are added on with __setitem__ after construction 2. Everything is aligned with an outer join, nothing takes precedence (which I think means the constructor can never fail for alignment reasons)

I would favor (1), since you can be explicit about what coords you want to end up with; if you don't have a preference, you can neglect to supply coords and get the outer join.

But it sounds like you may favor (2)?

 
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