issue_comments: 489064553

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https://github.com/pydata/xarray/issues/1823#issuecomment-489064553 https://api.github.com/repos/pydata/xarray/issues/1823 489064553 MDEyOklzc3VlQ29tbWVudDQ4OTA2NDU1Mw== 3404817 2019-05-03T11:26:06Z 2019-05-03T11:36:44Z CONTRIBUTOR

The original issue of this thread is that you sometimes might want to disable alignment checks for coordinates other than the concat_dim and only check for same dimensions and dimension shapes.

When you xr.merge with join='exact', it still checks for alignment (see https://github.com/pydata/xarray/pull/1330#issuecomment-302711852), but does not join the coordinates if they are not aligned. This behavior (not joining) is also included in what @rabernat envisioned here, but his suggestion goes beyond that: you don't even load coordinate values from all but the first dataset and just blindly trust that they are aligned.

So xr.open_mfdataset(join='exact', coords='minimal') does not fix this issue here, I think.

 
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