issue_comments: 201992240

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https://github.com/pydata/xarray/issues/805#issuecomment-201992240 https://api.github.com/repos/pydata/xarray/issues/805 201992240 MDEyOklzc3VlQ29tbWVudDIwMTk5MjI0MA== 2443309 2016-03-27T05:00:49Z 2016-03-27T05:00:49Z MEMBER

It doesn't really seem like reference_time is a "coordinate" variable. Being a scalar, you are not going to use it as a coordinate in the same sense as lat/lon/time. Nevertheless, your example works if you cast the Period to a DataArray first:

Python ds = xr.Dataset({'temperature': (['x', 'y', 'time'], temp), 'precipitation': (['x', 'y', 'time'], precip)}, coords={'lon': (['x', 'y'], lon), 'lat': (['x', 'y'], lat), 'time': pd.date_range('2014-09-06', periods=3), 'reference_time': xr.DataArray(pd.Period('2014'))})

 
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