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/7191#issuecomment-1287124949,https://api.github.com/repos/pydata/xarray/issues/7191,1287124949,IC_kwDOAMm_X85Mt_fV,2448579,2022-10-21T15:30:10Z,2022-10-21T15:30:35Z,MEMBER,"> I'm also not sure why _FillValue and missing_value should be required to have the same value.

Xarray has only one way to represent both concepts: `np.nan`. So when you decode you lose information on whether a value was a `missing_value` or `_FillValue`. Then when you encode, you have to pick either `_FillValue` or `missing_value` to represent the `np.nan`

>  to_netcdf will assign '_FillValue': nan. 

This seems like a bug. Can you open a new issue with a minimum reproducible example that uses random data please?

","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1416709246
https://github.com/pydata/xarray/issues/7191#issuecomment-1286951591,https://api.github.com/repos/pydata/xarray/issues/7191,1286951591,IC_kwDOAMm_X85MtVKn,5821660,2022-10-21T13:18:59Z,2022-10-21T13:18:59Z,MEMBER,"@dopplershift equivalence is checked here, there is also the error origination from.

https://github.com/pydata/xarray/blob/3c98ec7d96cc4b46664850cc7a40af2bc184fea0/xarray/coding/variables.py#L153-L163","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1416709246
https://github.com/pydata/xarray/issues/7191#issuecomment-1285942035,https://api.github.com/repos/pydata/xarray/issues/7191,1285942035,IC_kwDOAMm_X85MpesT,5821660,2022-10-20T18:01:20Z,2022-10-20T18:01:20Z,MEMBER,And on the variable? Please also have a look at the docs on to_netcdf regarding encoding-kwarg.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1416709246
https://github.com/pydata/xarray/issues/7191#issuecomment-1285656024,https://api.github.com/repos/pydata/xarray/issues/7191,1285656024,IC_kwDOAMm_X85MoY3Y,5821660,2022-10-20T14:33:44Z,2022-10-20T14:34:07Z,MEMBER,"@WillyChap Could you inspect the contents of `.encoding`. IIRC that values are located there. Or you would need to specify the `encoding` kwarg in to_netcdf. 

Disclaimer: This is from the top of my head, so mistakes are likely.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1416709246