TypeError: Object of type CRS is not JSON serializable

[bleikerj]

I got the following error using geoparquet when converting a geodataframe into a geoparquet file:

import geopandas as gpd
import geoparquet as gpq
import os

# define filepath and read in file from shapefile or other format using geopandas
filepath = os.path.join(r'path2directory', 'shapefile.shp')
gdf = gpd.read_file(filepath)

# convert geodataframe into geoparquet file
gdf.to_geoparquet(os.path.join(r'path2directory', 'testfile.geoparquet'))

By doing that, I got the following error:

Traceback (most recent call last):
  File "O:\GIS\GEP\RLS\GIS+IT\Python_Clones\JBL\envs\OpenSourceGIS_DL_Clone_Python38\lib\site-packages\IPython\core\interactiveshell.py", line 3437, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-46-1a3f800ddf02>", line 1, in <module>
    testdata.to_geoparquet(os.path.join(r'O:\GIS\GEP\RLS\_Mitarbeitende\JBL2020\ABX_only\InSAR\9999_Diverses\Test', 'test3.geoparquet'))
  File "O:\GIS\GEP\RLS\GIS+IT\Python_Clones\JBL\envs\OpenSourceGIS_DL_Clone_Python38\lib\site-packages\geoparquet\__init__.py", line 94, in to_geoparquet
    self = _update_metadata(self, new_metadata=geometry_metadata)
  File "O:\GIS\GEP\RLS\GIS+IT\Python_Clones\JBL\envs\OpenSourceGIS_DL_Clone_Python38\lib\site-packages\geoparquet\__init__.py", line 53, in _update_metadata
    tbl_metadata[k] = json.dumps(v).encode('utf-8')
  File "O:\GIS\GEP\RLS\GIS+IT\Python_Clones\JBL\envs\OpenSourceGIS_DL_Clone_Python38\lib\json\__init__.py", line 231, in dumps
    return _default_encoder.encode(obj)
  File "O:\GIS\GEP\RLS\GIS+IT\Python_Clones\JBL\envs\OpenSourceGIS_DL_Clone_Python38\lib\json\encoder.py", line 199, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "O:\GIS\GEP\RLS\GIS+IT\Python_Clones\JBL\envs\OpenSourceGIS_DL_Clone_Python38\lib\json\encoder.py", line 257, in iterencode
    return _iterencode(o, 0)
  File "O:\GIS\GEP\RLS\GIS+IT\Python_Clones\JBL\envs\OpenSourceGIS_DL_Clone_Python38\lib\json\encoder.py", line 179, in default
    raise TypeError(f'Object of type {o.__class__.__name__} '
TypeError: Object of type CRS is not JSON serializable

Debugging of the code showed a bug in the init.py file. When changing the following line, the bug can be removed:

# OLD version of line 74 in the __init__.py file
crs = self.crs

# NEW version (works fine) of line 74 in the __init__.py file
crs = self.crs.to_wkt(version='WKT2_2018')

I hope, with these information I can contribute to remove this bug.

[karunakar2]

Any chance this is resolved? My manipulation involves assigning crs-2193 aswell.

[EduardoVirtuoso]

I am having the same problem. Does anyone know how to solve this?

[shahinmg]

also having this issue

[JBisc]

also having it