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id node_id number title user state locked assignee milestone comments created_at updated_at ▲ closed_at author_association active_lock_reason draft pull_request body reactions performed_via_github_app state_reason repo type
198742089 MDU6SXNzdWUxOTg3NDIwODk= 1192 Implementing dask.array.coarsen in xarrays laliberte 3217406 closed 0     19 2017-01-04T15:59:50Z 2019-02-01T16:07:52Z 2019-02-01T16:07:52Z CONTRIBUTOR      

Would it make sense to implement the dask.array.coarsen method on xarrays?

In some ways, coarsen is a generalization of reduce.

Any thoughts?

 
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   completed xarray 13221727 issue
195832230 MDExOlB1bGxSZXF1ZXN0OTgxNzAxNDE= 1165 Set a default _FillValue of NaN for float types laliberte 3217406 closed 0     16 2016-12-15T15:20:16Z 2017-09-28T13:20:12Z 2016-12-16T03:11:06Z CONTRIBUTOR   0 pydata/xarray/pulls/1165

This PR attempts to solve #1163 by systematically including a default _FillValue of NaN whenever the user do not explicitly specify a FillValue. The idea is that third party software should work properly in these situations and if they don't then it is a bug on their side.

 
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     xarray 13221727 pull
197364558 MDExOlB1bGxSZXF1ZXN0OTkyMzg4NzQ= 1181 Add mention of in breaking change about default fill value laliberte 3217406 closed 0     1 2016-12-23T12:51:39Z 2016-12-23T17:25:41Z 2016-12-23T17:25:37Z CONTRIBUTOR   0 pydata/xarray/pulls/1181

Quick PR to attribute credit to Frederic Laliberte for the default fill value in the .to_netcdf() method.

 
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     xarray 13221727 pull
195576963 MDU6SXNzdWUxOTU1NzY5NjM= 1163 User warning / more transparent _FillValue interface for .to_netcdf() laliberte 3217406 closed 0     3 2016-12-14T16:23:05Z 2016-12-23T05:44:00Z 2016-12-23T05:44:00Z CONTRIBUTOR      

Since many tools (for example cdo) do not work well with NaN values, the default missing value setting for the .to_netcdf() method is not well-suited to enable optimal data reuse.

One option would be to add a fill_value=NaN option to .to_netcdf() and output a warning message whenever NaNs are written to netCDF: 'The data being written to netCDF includes missing values (NaN) that are often not easily handled by other netCDF softwares. It is strongly encouraged to coerce missing data to a valid yet large floating point value (for example, 1e20 for float) by calling .to_netcdf(..., fill_value=1e20)'.

 
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   completed xarray 13221727 issue

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