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  • akanshajais · 1 ✖

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  • plotting facet grid with singleton dimension should create a facet grid with size 1 · 1 ✖

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  • NONE · 1 ✖
id html_url issue_url node_id user created_at updated_at ▲ author_association body reactions performed_via_github_app issue
1494018319 https://github.com/pydata/xarray/issues/7552#issuecomment-1494018319 https://api.github.com/repos/pydata/xarray/issues/7552 IC_kwDOAMm_X85ZDOkP akanshajais 85181086 2023-04-03T09:51:16Z 2023-04-08T11:37:40Z NONE

The reason why you are getting a KeyError in your first example when trying to plot with col='y' is because when y is a dimension with length 1, xarray automatically drops the dimension and promotes its coordinates to 1D.

In your example, the y dimension has length 1, so it is dropped, and da.coords['y'] returns a scalar value rather than a 1D coordinate array. When you try to plot with col='y', xarray looks for the 'y' key in the coordinates dictionary, which doesn't exist, hence the KeyError.

To work around this, you can manually promote the y coordinate to a 1D array using the expand_dims method:

``` import xarray as xr import numpy as np

da = xr.DataArray(np.random.rand(3,1), dims=('x', 'y')) da.coords['y'] = da.coords['y'].expand_dims('y') da.plot(col='y')

``` This will ensure that the y coordinate is always a 1D array, even when the dimension it represents has length 1.

 
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   plotting facet grid with singleton dimension should create a facet grid with size 1 1596890616

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