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
287595664,MDU6SXNzdWUyODc1OTU2NjQ=,1818,Change of file encoding when opening,1918190,closed,0,,,4,2018-01-10T22:13:22Z,2018-01-11T02:19:20Z,2018-01-11T02:19:20Z,NONE,,,,"I am using xarray to modify goes-16 netCDF files. I open the file, and create a new file with the same structure and attributes, but with a selected area of the data.

When I try to run this file I am having trouble with the library that I use to read the data which uses h5netcdf as library to read the data. I found that the error if because of the string encoding and changes in the netCDF C library.

My question is about xarray default behavior, should it change the encoding when opening the file?

And about a possible solution, do I have to change the encoding of any string attribute, one by one?

Here is my code

```python
xnc = xr.open_dataset(file)
xnc = xnc.sel(y=xnc.Rad.y.values[y_l:y_r], x=xnc.Rad.x.values[x_l:x_r])
xnc.to_netcdf(nfile, format='NETCDF4_CLASSIC')
nfiles.append(nfile)
```","{""url"": ""https://api.github.com/repos/pydata/xarray/issues/1818/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed,13221727,issue