issue_comments: 450457809

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https://github.com/pydata/xarray/issues/2636#issuecomment-450457809 https://api.github.com/repos/pydata/xarray/issues/2636 450457809 MDEyOklzc3VlQ29tbWVudDQ1MDQ1NzgwOQ== 2448579 2018-12-29T02:28:53Z 2018-12-29T02:28:53Z MEMBER

The values of your time variable are preserved but the units change. I wonder if we should consider this a round-tripping bug.

python attrs = {'units': 'hours since 2015-01-01'} ds_1 = xr.Dataset({'temperature': (['x', 'y', 'time'], temp)}, coords={'lon': (['x', 'y'], lon), 'lat': (['x', 'y'], lat), 'time': ('time', [100, 101, 102], attrs)}) print(ds_1.time.attrs) ds_1.to_netcdf('ds1.nc') file = xr.open_dataset('ds1.nc') print(file.time.attrs) file.close()

gives output OrderedDict([('units', 'hours since 2015-01-01')]) OrderedDict()

 
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