issue_comments: 895455163

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https://github.com/pydata/xarray/pull/5680#issuecomment-895455163 https://api.github.com/repos/pydata/xarray/issues/5680 895455163 IC_kwDOAMm_X841X4-7 1217238 2021-08-09T18:46:59Z 2021-08-09T18:46:59Z MEMBER

Right, so netCDF3 has a default value used for filling out variables before any data is written.

My concern is that there are two (overlapping) use-case for fill values:

  1. The default array value used for variables on disk, e.g., before they are written
  2. Truly missing values (with different semantics), which Xarray represents with NaN

Certainly these sometimes coincide, but that isn't necessarily the case.

 
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