issue_comments: 393761310

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https://github.com/pydata/xarray/pull/2104#issuecomment-393761310 https://api.github.com/repos/pydata/xarray/issues/2104 393761310 MDEyOklzc3VlQ29tbWVudDM5Mzc2MTMxMA== 6815844 2018-06-01T05:20:59Z 2018-06-01T05:20:59Z MEMBER
  1. I suppose it probably does make sense to interpolate numeric coordinates, too. So this probably doesn't need to change.

Agreed.

  1. I do think we should drop non-numeric variables. There just isn't any way to meaningfully interpolate them (especially strings). This means we will probably need to add a check in DataArray.interp to ensure that the variable dtype is numeric and otherwise raise an error.

Also agreed. In theory, datetime dtype could be safely interpolated. Maybe we can support this if there is a demand.

It might be necessary to consider the same design issue also for interpolate_na, bfill, ffill.

 
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