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/6392#issuecomment-1082497324,https://api.github.com/repos/pydata/xarray/issues/6392,1082497324,IC_kwDOAMm_X85AhZks,5635139,2022-03-30T00:32:48Z,2022-03-30T00:32:48Z,MEMBER,"Thanks for the thoughtful reply @benbovy 

(This is a level down and you can make a decision later, so fine if you prefer to push the discussion.)

How would we handle creating xarray objects from pandas objects where they have a multiindex?

To what extent do you think this is this the ""standard case"" and we could default to it?

```python
idx = xr.PandasMultiIndex(pd_idx, ""x"")
indexes = {""x"": idx, ""foo"": idx, ""bar"": idx}
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1175329407
https://github.com/pydata/xarray/issues/6392#issuecomment-1080007416,https://api.github.com/repos/pydata/xarray/issues/6392,1080007416,IC_kwDOAMm_X85AX5r4,5635139,2022-03-27T19:54:44Z,2022-03-27T19:54:44Z,MEMBER,"I realize there's a lot here and I've been out of this thread for a bit, so please forgive any naive questions!

> I would suggest depreciating this behavior in favor of a more explicit (although more verbose) way to pass an existing pandas multi-index:

What's the rationale for deprecating this? I think my experience with users of xarray is mostly those coming from pandas; for them interop is quite important. If there's a canonical way of transforming the index, it would be friendlier to do that automatically.

```python
import pandas as pd
import xarray as xr

pd_idx = pd.MultiIndex.from_product([[""a"", ""b""], [1, 2]], names=(""foo"", ""bar""))
idx = pd_idx

ds = xr.Dataset(coords={""x"": idx})
```

i.e.

```
ds = xr.Dataset(coords=coords)
# ValueError: missing index(es) for coordinate(s): 'x', 'foo', 'bar'
# or
# create unindexed coordinates 'foo' and 'bar' and a 'x' coordinate with a single pandas index 
```

I would have expected the later, both for `coords=coords` and for `coords=pd_idx` (again, with the disclaimer that I may be missing crucial parts of the puzzle here).

> Should we silently reorder the coordinates and/or indexes when the levels are not passed in the right order? It seems odd requiring mapping elements be passed in a given order.

👍 ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1175329407