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  • hans-permana · 2 ✖

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  • xarray.Dataset.sel(time='2007-04-12') returns unexpected time dimension · 2 ✖

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  • NONE · 2 ✖
id html_url issue_url node_id user created_at updated_at ▲ author_association body reactions performed_via_github_app issue
394718239 https://github.com/pydata/xarray/issues/2213#issuecomment-394718239 https://api.github.com/repos/pydata/xarray/issues/2213 MDEyOklzc3VlQ29tbWVudDM5NDcxODIzOQ== hans-permana 7643370 2018-06-05T13:55:30Z 2018-06-05T13:55:30Z NONE

@shoyer I created a notebook to reproduce this issue with self-contained dummy data and I think I know when this issue occurs.

In both cases (my original application and in the notebook example), the time dimension of the DataArray comes with time. When selecting it using .sel, when time is specified with date and time, the returned DataArray is rightly 2D. However, when the time selection includes only the date (when calling xarray.Dataset.sel), the return includes an unexpected time dimension. In the notebook example, the time dimension is 1 because it could find the right date whereas in my application, time dimension is 0 because it could not find the queried date. I am not sure what is the expected behaviour here.

 
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   xarray.Dataset.sel(time='2007-04-12') returns unexpected time dimension 329066551
394371429 https://github.com/pydata/xarray/issues/2213#issuecomment-394371429 https://api.github.com/repos/pydata/xarray/issues/2213 MDEyOklzc3VlQ29tbWVudDM5NDM3MTQyOQ== hans-permana 7643370 2018-06-04T14:19:29Z 2018-06-04T14:19:29Z NONE

@jhamman - yes I can reproduce this also in 0.10.6.

INSTALLED VERSIONS ------------------ commit: None python: 3.5.2.final.0 python-bits: 64 OS: Windows OS-release: 10 machine: AMD64 processor: Intel64 Family 6 Model 63 Stepping 2, GenuineIntel byteorder: little LC_ALL: None LANG: None LOCALE: None.None xarray: 0.10.6 pandas: 0.19.0 numpy: 1.11.3 scipy: 1.1.0 netCDF4: 1.2.2 h5netcdf: 0.2.2 h5py: 2.6.0 Nio: None zarr: None bottleneck: 1.2.1 cyordereddict: 1.0.0 dask: 0.14.1 distributed: 1.21.8 matplotlib: 2.2.2 cartopy: None seaborn: 0.8.1 setuptools: 27.2.0.post20161106 pip: 9.0.1 conda: None pytest: 3.6.0 IPython: 6.4.0 sphinx: None 
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   xarray.Dataset.sel(time='2007-04-12') returns unexpected time dimension 329066551

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