issue_comments: 1042731962

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https://github.com/pydata/xarray/issues/4118#issuecomment-1042731962 https://api.github.com/repos/pydata/xarray/issues/4118 1042731962 IC_kwDOAMm_X84-JtO6 5821660 2022-02-17T09:17:55Z 2022-02-17T09:17:55Z MEMBER

@alexamici

  • in netCDF following the CF conventions for groups, it is legal for an array to refer to a dimension or a coordinate in a different group and so arrays in the same group may have dimensions with the same name, but different size / coordinate values, (this was the orginal motivation to explore the DataGroup approach)

I'm having difficulties to understand your above point wrt to the scoping rules from the above CF document. Shouldn't it be impossible to create two arrays (in the same group) having dimensions with exactly the same name from different groups? Looking at the example here https://github.com/alexamici/xarray-datagroup there are coordinates with name "/lat" vs "lat". Aren't that two different names? Maybe I'm missing something essential here. 

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