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/6229#issuecomment-1239167123,https://api.github.com/repos/pydata/xarray/issues/6229,1239167123,IC_kwDOAMm_X85J3DCT,4160723,2022-09-07T09:51:13Z,2022-09-07T09:51:13Z,MEMBER,"> Does it still have the asterix(*)?

Not anymore with v2022.6.0.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1120405560
https://github.com/pydata/xarray/issues/6229#issuecomment-1239068974,https://api.github.com/repos/pydata/xarray/issues/6229,1239068974,IC_kwDOAMm_X85J2rEu,4160723,2022-09-07T08:22:43Z,2022-09-07T08:22:43Z,MEMBER,"> I think we need to address this through a warning or error so that users can be alerted that behaviour has changed.

This is done in #6999. Would it close this issue?
","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1120405560
https://github.com/pydata/xarray/issues/6229#issuecomment-1091910545,https://api.github.com/repos/pydata/xarray/issues/6229,1091910545,IC_kwDOAMm_X85BFTuR,2448579,2022-04-07T15:57:23Z,2022-04-07T15:57:23Z,MEMBER,"> `data.rename({""c"": ""x""})` does not implicitly create anymore an indexed coordinate

I have code that relied on automatic index creation through rename and some downstream code broke.

I think we need to address this through a warning or error so that users can be alerted that behaviour has changed.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1120405560
https://github.com/pydata/xarray/issues/6229#issuecomment-1039769097,https://api.github.com/repos/pydata/xarray/issues/6229,1039769097,IC_kwDOAMm_X849-Z4J,4160723,2022-02-15T01:58:43Z,2022-02-15T02:00:50Z,MEMBER,"This has been discussed in #4825.

A third option for `rename{_vars}` would be to rename the coordinate and its index (if any), regardless of whether the old and new names correspond to existing dimensions. We plan to drop the concept of a ""dimension coordinate"" with an implicit index in favor of indexes explicitly part of Xarray's data model (see https://github.com/pydata/xarray/projects/1), so that it will be possible to set indexes for non-dimension coordinates and/or set dimension coordinates without indexes.

Re your example, in #5692 `data.rename({""c"": ""x""})` does not implicitly create anymore an indexed coordinate (no `*`):

```python
data_renamed
# <xarray.DataArray (x: 3)>
# array([5, 6, 7])
# Coordinates:
#     x        (x) int64 1 2 3
```

Instead, it should be possible to directly set an index for the `c` coordinate without the need to rename it, e.g.,

```python
# API has still to be defined
data_indexed = data.set_index(""c"", index_cls=xr.PandasIndex)

data_indexed.sel(c=[1, 2])
# <xarray.DataArray (x: 2)>
# array([5, 6])
# Coordinates:
#   * c       (x) int64 1 2
```

","{""total_count"": 1, ""+1"": 1, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1120405560