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/4118#issuecomment-1059499222,https://api.github.com/repos/pydata/xarray/issues/4118,1059499222,IC_kwDOAMm_X84_JqzW,199813,2022-03-04T20:25:47Z,2022-03-04T20:25:47Z,NONE,@LunarLanding You may also be interested in [awkward array](https://awkward-array.org/quickstart.html).,"{""total_count"": 1, ""+1"": 1, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,628719058
https://github.com/pydata/xarray/issues/4118#issuecomment-875121115,https://api.github.com/repos/pydata/xarray/issues/4118,875121115,MDEyOklzc3VlQ29tbWVudDg3NTEyMTExNQ==,199813,2021-07-06T22:21:02Z,2021-07-06T22:21:02Z,NONE,"> That sounds right to me -- a downside of tags is that they can't be (uniquely) expressed in a hierarchical arrangement like those found in HDF5/netCDF4 files.

hdf5 allows for internal links so a datasets and groups can appear in multiple places in the tree.  You can even make cycles where groups are in them selves (or their children).  The NeXuS format (the xray/neutron one) [makes heavy use](https://manual.nexusformat.org/design.html#links) of this to let data appear both where it ""makes sense"" from a science point of view from an instrumentation point of view.

I think it is reasonable to expect that netcdf -> xarray -> netcdf always , however I think it is unreasonable to ask that xarray -> netcdf -> xarray will always work.  I think it is OK if xarray can express more complex relationship and structures that you can in netcdf (or hdf5 or any existing at-rest format).   In an extreme case, consider an interface to a database that returns xarrays 😈 .","{""total_count"": 4, ""+1"": 4, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,628719058
https://github.com/pydata/xarray/issues/4118#issuecomment-802863863,https://api.github.com/repos/pydata/xarray/issues/4118,802863863,MDEyOklzc3VlQ29tbWVudDgwMjg2Mzg2Mw==,199813,2021-03-19T14:14:13Z,2021-03-19T14:14:13Z,NONE,"This is related to some very recent work we have been doing at NSLS-II, primarily lead by @danielballan .","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,628719058