id,node_id,number,title,user,state,locked,assignee,milestone,comments,created_at,updated_at,closed_at,author_association,active_lock_reason,draft,pull_request,body,reactions,performed_via_github_app,state_reason,repo,type
1046990273,PR_kwDOAMm_X84uNA5a,5950,"Generate reductions for DataArray, Dataset, GroupBy and Resample",2448579,closed,0,,,13,2021-11-08T04:02:18Z,2022-03-18T04:17:30Z,2022-03-12T08:17:48Z,MEMBER,,0,pydata/xarray/pulls/5950,"- Closes #5898 
- Closes #1050
- xref #5816 

This is an improvement to #5871. 

I now use classes to make the generators extensible. This allows us to generate DataArray and Dataset reductions pretty easily. It *should* be easy to extend to Rolling, Coarsen.

Another nice feature is that we can explicitly add custom kwargs to the signature like `ddof` for `var` and `std`.","{""url"": ""https://api.github.com/repos/pydata/xarray/issues/5950/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,,13221727,pull
282339218,MDExOlB1bGxSZXF1ZXN0MTU4NTM3MTI2,1785,plot.line(): Draw multiple lines for 2D DataArrays.,2448579,closed,0,,,13,2017-12-15T07:14:25Z,2018-05-10T05:12:16Z,2017-12-31T17:16:17Z,MEMBER,,0,pydata/xarray/pulls/1785," - [x] Tests added (for all bug fixes or enhancements)
 - [x] Tests passed (for all non-documentation changes)
 - [x] Passes ``git diff upstream/master **/*py | flake8 --diff`` (remove if you did not edit any Python files)
 - [x] Fully documented, including `whats-new.rst` for all changes and `api.rst` for new API (remove if this change should not be visible to users, e.g., if it is an internal clean-up, or if this is part of a larger project that will be documented later)

Adds support for plotting multiple lines if `plot.line()` is provided with a 2D dataarray.

kwarg `x` lets you specify co-ordinate for x-axis.

Example:


![xarray-multiple-line](https://user-images.githubusercontent.com/2448579/34031085-96dfbaee-e124-11e7-8578-e97586257b7a.png)
","{""url"": ""https://api.github.com/repos/pydata/xarray/issues/1785/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,,13221727,pull