html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,performed_via_github_app,issue
https://github.com/pydata/xarray/issues/6188#issuecomment-1020614105,https://api.github.com/repos/pydata/xarray/issues/6188,1020614105,IC_kwDOAMm_X8481VXZ,30388627,2022-01-24T22:27:48Z,2022-01-24T22:27:48Z,NONE,"@andersy005 Thanks a lot, I realize that it's mentioned in the comments of [Guide](https://xarray.pydata.org/en/stable/user-guide/interpolation.html#interpolation-methods).","{""total_count"": 1, ""+1"": 1, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1112925311
https://github.com/pydata/xarray/issues/6188#issuecomment-1020572086,https://api.github.com/repos/pydata/xarray/issues/6188,1020572086,IC_kwDOAMm_X8481LG2,13301940,2022-01-24T21:36:06Z,2022-01-24T21:39:01Z,MEMBER,"@zxdawn, 

Thank you for the thorough, reproducible example.  

[Per Scipy's documentation](https://docs.scipy.org/doc/scipy/reference/generated/scipy.interpolate.RegularGridInterpolator.html#scipy.interpolate.RegularGridInterpolator), `RegularGridInterpolator` uses `fill_value=None` for extrapolation


```python
In [23]: da.interp(x=x, y=y, kwargs={""fill_value"": None})

Out[23]: 
<xarray.DataArray (z: 3)>
array([-0.26074336,  0.63496063, -0.46643289])
Coordinates:
    x        (z) float64 -0.5 1.5 2.5
    y        (z) float64 0.15 0.25 0.35
Dimensions without coordinates: z
```
","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1112925311