Hello everyone,
I am trying to create a join between 2 hosted feature layers in ArgGIS API for Python (on ArcGIS Online). I keep receiving a type error and I'm not really sure how to approach it.
Exception: A general error occurred: Object of type 'set' is not JSON serializable
Here is the code and the output:
joinData = join_features(target_layer=facilities,
join_layer=counties,
output_name="Facility_county_join",
join_operation="JoinOneToOne",
spatial_relationship="",
attribute_relationship=[{"NAME", "Facility"}],
summary_fields=[{"Current_Status", "SUM"}])
TypeError Traceback (most recent call last)
/opt/conda/lib/python3.6/site-packages/arcgis/gis/_impl/_con/_connection.py in post(self, path, params, files, **kwargs)
662 if isinstance(v, (dict, list, tuple, bool)):
--> 663 params[k] = json.dumps(v)
664 elif isinstance(v, PropertyMap):
/opt/conda/lib/python3.6/json/__init__.py in dumps(obj, skipkeys, ensure_ascii, check_circular, allow_nan, cls, indent, separators, default, sort_keys, **kw)
230 default is None and not sort_keys and not kw):
--> 231 return _default_encoder.encode(obj)
232 if cls is None:
/opt/conda/lib/python3.6/json/encoder.py in encode(self, o)
198 # equivalent to the PySequence_Fast that ''.join() would do.
--> 199 chunks = self.iterencode(o, _one_shot=True)
200 if not isinstance(chunks, (list, tuple)):
/opt/conda/lib/python3.6/json/encoder.py in iterencode(self, o, _one_shot)
256 self.skipkeys, _one_shot)
--> 257 return _iterencode(o, 0)
258
/opt/conda/lib/python3.6/json/encoder.py in default(self, o)
179 raise TypeError("Object of type '%s' is not JSON serializable" %
--> 180 o.__class__.__name__) 181
TypeError: Object of type 'set' is not JSON serializable
During handling of the above exception, another exception occurred:
Exception Traceback (most recent call last)
<ipython-input-26-cf1ae0f3dbb2> in <module>
5 spatial_relationship="",
6 attribute_relationship=[{"NAME", "Facility"}],
----> 7 summary_fields=[{"Current_Status", "SUM"}])
/opt/conda/lib/python3.6/site-packages/arcgis/features/summarize_data.py in join_features(target_layer, join_layer, spatial_relationship, spatial_relationship_distance, spatial_relationship_distance_units, attribute_relationship, join_operation, summary_fields, output_name, context, gis, estimate, future)
640 if 'summary_fields' not in params:
641 params['summary_fields'] = summary_fields
--> 642 return gis._tools.featureanalysis.join_features(**params)
/opt/conda/lib/python3.6/site-packages/arcgis/_impl/tools.py in join_features(self, target_layer, join_layer, spatial_relationship, spatial_relationship_distance, spatial_relationship_distance_units, attribute_relationship, join_operation, summary_fields, output_name, context, estimate, records_to_match, future)
2746 output_name=output_name,
2747 context=context, gis=self._gis,
-> 2748 future=True) 2749 gpjob._is_fa = True
2750 if future:
<string> in join_features(target_layer, join_layer, spatial_relationship, spatial_relationship_distance, spatial_relationship_distance_units, attribute_relationship, join_operation, summary_fields, records_to_match, output_name, context, join_type, gis, future)
/opt/conda/lib/python3.6/site-packages/arcgis/geoprocessing/_support.py in _execute_gp_tool(gis, task_name, params, param_db, return_values, use_async, url, webtool, add_token, return_messages, future)
388 job_info = gptool._con.post(submit_url, gp_params)
389 else:
--> 390 job_info = gptool._con.post(submit_url, gp_params)
391 job_id = job_info['jobId']
392 if future:
/opt/conda/lib/python3.6/site-packages/arcgis/gis/_impl/_con/_connection.py in post(self, path, params, files, **kwargs)
698 "URL scheme must be provided: %s" % errMS)
699 except Exception as e:
--> 700 raise Exception('A general error occurred: %s' % e)
701 except:
702 import traceback
Exception: A general error occurred: Object of type 'set' is not JSON serializable
Thank you in advance!
