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ENH: Add axis attribute to 1-D latitude and longitude coordinates #437

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ENH: Add axis attribute to 1-D latitude and longitude coordinates #437

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ENH: Add axis attribute to 1-D latitude and longitude coordinates
DWesl Nov 19, 2025
c711227
BUG,MAINT: Variables have attributes, not attrs
DWesl May 12, 2026
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3 changes: 3 additions & 0 deletions cfgrib/dataset.py
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Original file line number Diff line number Diff line change
Expand Up @@ -414,6 +414,9 @@ def build_geography_coordinates(
data=np.array(first["distinctLongitudes"], ndmin=1),
attributes=COORD_ATTRS["longitude"],
)
# latitude and longitude are dimension coordinates
geo_coord_vars["latitude"].attrs["axis"] = "Y"
geo_coord_vars["longitude"].attrs["axis"] = "X"
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elif "geography" in encode_cf and grid_type in GRID_TYPES_2D_NON_DIMENSION_COORDS:
geo_dims = ("y", "x")
geo_shape = (first["Ny"], first["Nx"])
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