issue_comments: 518811214

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https://github.com/pydata/xarray/pull/3159#issuecomment-518811214 https://api.github.com/repos/pydata/xarray/issues/3159 518811214 MDEyOklzc3VlQ29tbWVudDUxODgxMTIxNA== 5635139 2019-08-06T19:31:28Z 2019-08-06T19:31:28Z MEMBER
  1. Fill the unspecified array with np.nan, to indicate invalid values.

👍

If users want an empty DataArray, make them omit the argument entirely, e.g., xr.DataArray(coord=coords, dims=dims).

👍

...so for clarity, no need to expose the sentinel values externally, they're an internal implementation that then fills np.nans

 
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