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  • Bug when padding coordinates with NaNs · 2 ✖
id html_url issue_url node_id user created_at updated_at ▲ author_association body reactions performed_via_github_app issue
1490313819 https://github.com/pydata/xarray/issues/6431#issuecomment-1490313819 https://api.github.com/repos/pydata/xarray/issues/6431 IC_kwDOAMm_X85Y1GJb husainridwan 61923007 2023-03-30T13:33:09Z 2023-03-30T13:33:09Z NONE

@TomNicholas, I believe the pad() method does not consider any coordinates and only pads the data along the dimensions it contains. That's why the padding leads to a new data array that has the same dimension name as the original one but no coordinates.

We can set the coordinates explicitly using the coords attribute of the DataArray after padding. Check this example: ``` import numpy as np import xarray as xr

da = xr.DataArray(np.arange(9), dim='x') padded_da = da.pad({'x': (0, 1)}, 'constant') padded_da.coords['x'] = np.arange(padded_da.shape[0]) print(padded_da)

<xarray.DataArray (x: 3)> array([ 0., 1., nan]) Coordinates: * x (x) int64 0 1 2 ```

Hopefully this helps!

 
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   Bug when padding coordinates with NaNs 1188523721
1085040182 https://github.com/pydata/xarray/issues/6431#issuecomment-1085040182 https://api.github.com/repos/pydata/xarray/issues/6431 IC_kwDOAMm_X85ArGY2 TomNicholas 35968931 2022-03-31T19:57:12Z 2022-03-31T19:57:12Z MEMBER

The problem appears to be caused by a bug with our dtypes module. In this line the current padding code assumes that this ```python import xarray.core.dtypes

In [20]: dtypes.NA is np.NAN Out[20]: False ``` would evaluate to True.

 
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   Bug when padding coordinates with NaNs 1188523721

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