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  • leroygr · 3 ✖

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447377321 https://github.com/pydata/xarray/issues/2606#issuecomment-447377321 https://api.github.com/repos/pydata/xarray/issues/2606 MDEyOklzc3VlQ29tbWVudDQ0NzM3NzMyMQ== leroygr 1411854 2018-12-14T16:28:29Z 2018-12-14T16:28:29Z NONE

Sorry my bad, I mis-used the function. The encoding parameters must be in the attrs and not encoding argument:

```python

encoded_var = xr.Variable(dims=('latitude','longitude'), data=dask.array.from_array([[-11608, 9419, 27983, 32767, 1306], [ 24657, 27490, 12354, 13565, -31678], [ 23286, 19197, -425, -17866, -2387], [ 8284, 22922, 25428, 28584, 29309], [ 21439, 26654, 15559, -2752, -32766]], chunks=(5,5)), attrs=OrderedDict([('long_name', 'Land-sea mask'), ('standard_name', 'land_binary_mask'), ('units', '(0 - 1)'), ('_FillValue', -32767), ('dtype', dtype('int16')), ('scale_factor', 1.0576998063464478e-07), ('add_offset', 0.9965342350445446) ]), encoding={'chunks': (5, 5), } )

xr.conventions.decode_cf_variable('l',encoded_var).compute() <xarray.Variable (latitude: 5, longitude: 5)> array([[0.995306, 0.99753 , 0.999494, 1. , 0.996672], [0.999142, 0.999442, 0.997841, 0.997969, 0.993184], [0.998997, 0.998565, 0.996489, 0.994645, 0.996282], [0.99741 , 0.998959, 0.999224, 0.999558, 0.999634], [0.998802, 0.999353, 0.99818 , 0.996243, 0.993069]]) Attributes: long_name: Land-sea mask standard_name: land_binary_mask units: (0 - 1) dtype: int16 ```

 
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   Can't decode cf_variable 391168098
442055522 https://github.com/pydata/xarray/issues/2022#issuecomment-442055522 https://api.github.com/repos/pydata/xarray/issues/2022 MDEyOklzc3VlQ29tbWVudDQ0MjA1NTUyMg== leroygr 1411854 2018-11-27T13:20:33Z 2018-11-27T13:20:33Z NONE

Would be indeed really nice to get this built-in into xarray, but that is just a matter of patience I guess :)

Patience...or action. Anyone is welcome and encouraged to submit a pull request on this topic. Xarray is a volunteer effort.

Obviously. I'm just new to Zarr so a bit early to contribute to Xarray on that topic.

 
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   Enable Append/concat to existing zarr datastore 309227775
441997049 https://github.com/pydata/xarray/issues/2022#issuecomment-441997049 https://api.github.com/repos/pydata/xarray/issues/2022 MDEyOklzc3VlQ29tbWVudDQ0MTk5NzA0OQ== leroygr 1411854 2018-11-27T09:55:10Z 2018-11-27T09:55:10Z NONE

My use case for this is appending Argo float data to an existing zarr store. At the moment I have 800+ netcdf files that need transforming before they can be added or read by xarray in *.nc type read. At the moment I read the first transform it and add to a zarr sort using .to_zarr. Then I proceed to read the next files and append each variable to zarr using zarr append function.

This is probably not a good way to go but all that I could figure at the moment.

@NickMortimer would you have snipped for appending xarray objects to existing zarr dataset?

Would be indeed really nice to get this built-in into xarray, but that is just a matter of patience I guess :)

Thanks! Greg

 
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   Enable Append/concat to existing zarr datastore 309227775

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