issue_comments: 601411557

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https://github.com/pydata/xarray/issues/3868#issuecomment-601411557 https://api.github.com/repos/pydata/xarray/issues/3868 601411557 MDEyOklzc3VlQ29tbWVudDYwMTQxMTU1Nw== 6815844 2020-03-19T20:53:30Z 2020-03-19T20:53:30Z MEMBER

How about passing an Index instead of just a simple integer to the pad method? ```python In [4]: da = xr.DataArray([0.5, 1.5, 2.5], dims=['x'], coords={'x': [0, 1, 2]})

In [5]: da
Out[5]: <xarray.DataArray (x: 3)> array([0.5, 1.5, 2.5]) Coordinates: * x (x) int64 0 1 2

In [8]: da.pad(x=([-1, -2], 0))
Out[8]: <xarray.DataArray (x: 5)> array([nan, nan, 0.5, 1.5, 2.5]) Coordinates: * x (x) int64 -1 -2 0 1 2 ```

 
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