'lat' is not a valid dimension or coordinate

[forecasterfen]

I keep getting this error, and I need assistance. Is this a xarray issue?

In [ ]: data.metpy.sel(lat=slice(70, 10), lon=slice(360 - 150, 360 - 55))
Out[ ]:
---------------------------------------------------------------------------
KeyError                                  Traceback (most recent call last)
Cell In [19], line 1
----> 1 ds = data.metpy.sel(lat=slice(70, 10), lon=slice(360 - 150, 360 - 55))

File /usr/local/lib/python3.9/dist-packages/metpy/xarray.py:826, in MetPyDatasetAccessor.sel(self, indexers, method, tolerance, drop, **indexers_kwargs)
    824 indexers = either_dict_or_kwargs(indexers, indexers_kwargs, 'sel')
    825 indexers = _reassign_quantity_indexer(self._dataset, indexers)
--> 826 return self._dataset.sel(indexers, method=method, tolerance=tolerance, drop=drop)

File /usr/local/lib/python3.9/dist-packages/xarray/core/dataset.py:2554, in Dataset.sel(self, indexers, method, tolerance, drop, **indexers_kwargs)
   2493 """Returns a new dataset with each array indexed by tick labels
   2494 along the specified dimension(s).
   2495 
   (...)
   2551 DataArray.sel
   2552 """
   2553 indexers = either_dict_or_kwargs(indexers, indexers_kwargs, "sel")
-> 2554 query_results = map_index_queries(
   2555     self, indexers=indexers, method=method, tolerance=tolerance
   2556 )
   2558 if drop:
   2559     no_scalar_variables = {}

File /usr/local/lib/python3.9/dist-packages/xarray/core/indexing.py:175, in map_index_queries(obj, indexers, method, tolerance, **indexers_kwargs)
    172     options = {"method": method, "tolerance": tolerance}
    174 indexers = either_dict_or_kwargs(indexers, indexers_kwargs, "map_index_queries")
--> 175 grouped_indexers = group_indexers_by_index(obj, indexers, options)
    177 results = []
    178 for index, labels in grouped_indexers:

File /usr/local/lib/python3.9/dist-packages/xarray/core/indexing.py:139, in group_indexers_by_index(obj, indexers, options)
    137     raise KeyError(f"no index found for coordinate {key!r}")
    138 elif key not in obj.dims:
--> 139     raise KeyError(f"{key!r} is not a valid dimension or coordinate")
    140 elif len(options):
    141     raise ValueError(
    142         f"cannot supply selection options {options!r} for dimension {key!r}"
    143         "that has no associated coordinate or index"
    144     )

KeyError: "'lat' is not a valid dimension or coordinate"

[keewis]

from the information you gave I can't really tell. Could you post output of print(data)?