AttributeError when calling assign

[tahentx]

Hi,

My intention is to disaggregate precincts to blocks. The traceback I receive below indicates an attribute error at the geopandas layer, which is being called from maup's assign method. Please advise.

`--------------------------------------------------------------------------- AttributeError Traceback (most recent call last) /usr/local/lib/python3.10/dist-packages/geopandas/geodataframe.py in crs(self) 436 try: --> 437 return self.geometry.crs 438 except AttributeError:

14 frames /usr/local/lib/python3.10/dist-packages/pandas/core/generic.py in getattr(self, name) 6292 return self[name] -> 6293 return object.getattribute(self, name) 6294

/usr/local/lib/python3.10/dist-packages/geopandas/geodataframe.py in _get_geometry(self) 235 --> 236 raise AttributeError(msg) 237 return self[self._geometry_column_name]

AttributeError: You are calling a geospatial method on the GeoDataFrame, but the active geometry column to use has not been set. There are columns with geometry data type (['geometry']), and you can either set one as the active geometry with df.set_geometry("name") or access the column as a GeoSeries (df["name"]) and call the method directly on it.

During handling of the above exception, another exception occurred:

AttributeError Traceback (most recent call last) /usr/local/lib/python3.10/dist-packages/pandas/core/generic.py in setattr(self, name, value) 6318 try: -> 6319 existing = getattr(self, name) 6320 if isinstance(existing, Index):

/usr/local/lib/python3.10/dist-packages/pandas/core/generic.py in getattr(self, name) 6292 return self[name] -> 6293 return object.getattribute(self, name) 6294

/usr/local/lib/python3.10/dist-packages/geopandas/geodataframe.py in crs(self) 438 except AttributeError: --> 439 raise AttributeError( 440 "The CRS attribute of a GeoDataFrame without an active "

AttributeError: The CRS attribute of a GeoDataFrame without an active geometry column is not defined. Use GeoDataFrame.set_geometry to set the active geometry column.

During handling of the above exception, another exception occurred:

ValueError Traceback (most recent call last) in <cell line: 2>() 1 blocks = blocks.set_geometry("geometry") ----> 2 mauped_blocks = maup_precinct_to_blocks(blocks, precincts, ['G22SOSDLAF','G22SOSRALL'])

in maup_precinct_to_blocks(blocks, precincts, election_columns) 7 8 def maup_precinct_to_blocks(blocks, precincts, election_columns): ----> 9 blocks_to_precincts_assignment = maup.assign(blocks, precincts) 10 weights = blocks['TOTPOP20'] / blocks_to_precincts_assignment.map(blocks['TOTPOP20'].groupby(blocks_to_precincts_assignment).sum()) 11 prorated = maup.prorate(blocks_to_precincts_assignment, precincts[election_columns], weights)

/usr/local/lib/python3.10/dist-packages/maup/crs.py in wrapped(*args, *kwargs) 12 ) 13 ) ---> 14 return f(args, **kwargs) 15 16 return wrapped

/usr/local/lib/python3.10/dist-packages/maup/assign.py in assign(sources, targets) 21 if len(unassigned): # skip if done 22 assignments_by_area = pandas.Series( ---> 23 assign_by_area(unassigned, targets), 24 dtype="float" 25 )

/usr/local/lib/python3.10/dist-packages/maup/assign.py in assign_by_area(sources, targets) 36 37 def assign_by_area(sources, targets): ---> 38 return assign_to_max(intersections(sources, targets, area_cutoff=0).area) 39 40

/usr/local/lib/python3.10/dist-packages/maup/crs.py in wrapped(*args, *kwargs) 12 ) 13 ) ---> 14 return f(args, **kwargs) 15 16 return wrapped

/usr/local/lib/python3.10/dist-packages/maup/intersections.py in intersections(sources, targets, output_type, area_cutoff) 40 df = GeoDataFrame.from_records(records, columns=["source", "target", "geometry"]) 41 df = df.sort_values(by=["source", "target"]).reset_index(drop=True) ---> 42 df.crs = sources.crs 43 44 geometries = df.set_index(["source", "target"]).geometry

/usr/local/lib/python3.10/dist-packages/geopandas/geodataframe.py in setattr(self, attr, val) 204 object.setattr(self, attr, val) 205 else: --> 206 super().setattr(attr, val) 207 208 def _get_geometry(self):

/usr/local/lib/python3.10/dist-packages/pandas/core/generic.py in setattr(self, name, value) 6333 stacklevel=find_stack_level(), 6334 ) -> 6335 object.setattr(self, name, value) 6336 6337 @final

/usr/local/lib/python3.10/dist-packages/geopandas/geodataframe.py in crs(self, value) 447 """Sets the value of the crs""" 448 if self._geometry_column_name is None: --> 449 raise ValueError( 450 "Assigning CRS to a GeoDataFrame without a geometry column is not " 451 "supported. Use GeoDataFrame.set_geometry to set the active "

ValueError: Assigning CRS to a GeoDataFrame without a geometry column is not supported. Use GeoDataFrame.set_geometry to set the active geometry column.`

[tahentx]

Also, when I load my geodataframe, I get a fiona error on the "fread" method that indicates an issue loading the .dbf file. It might be related.

[peterrrock2]

This is now fixed in version 2.0.2. Thank you for bringing it to our attention!