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/1988#issuecomment-379904046,https://api.github.com/repos/pydata/xarray/issues/1988,379904046,MDEyOklzc3VlQ29tbWVudDM3OTkwNDA0Ng==,1217238,2018-04-09T21:45:53Z,2018-04-09T21:46:01Z,MEMBER,"@WeatherGod Possibly! As usual, tests are the hard part :)","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,305327479 https://github.com/pydata/xarray/issues/1988#issuecomment-375558323,https://api.github.com/repos/pydata/xarray/issues/1988,375558323,MDEyOklzc3VlQ29tbWVudDM3NTU1ODMyMw==,1217238,2018-03-23T06:32:17Z,2018-03-23T06:32:17Z,MEMBER,"Yes, this seems like a bug. `open_mfdataset()` should always concatenate if a `dim` argument is provided explicitly.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,305327479 https://github.com/pydata/xarray/issues/1988#issuecomment-375548064,https://api.github.com/repos/pydata/xarray/issues/1988,375548064,MDEyOklzc3VlQ29tbWVudDM3NTU0ODA2NA==,2443309,2018-03-23T05:18:59Z,2018-03-23T05:18:59Z,MEMBER,"This does seem inconsistent to me. Not that the behavior of concat already works with a single object: ```Python In [1]: import xarray as xr In [2]: da = xr.DataArray([1, 2], dims='x', name='foo') In [3]: xr.concat([da], dim='y') Out[3]: array([[1, 2]]) Dimensions without coordinates: y, x ``` The offending line is here: https://github.com/pydata/xarray/blob/9261601f89c0d3cfc54db16718c82399d95266bd/xarray/core/combine.py#L342-L344 Based on this, I'm surprised my little example with concat works the way it does. In either event, it would be great if someone could spend some time normalizing the behavior here. ","{""total_count"": 1, ""+1"": 1, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,305327479