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Cannot load the dataset split (in streaming mode) to extract the first rows.
Error code:   StreamingRowsError
Exception:    CastError
Message:      Couldn't cast
Aachen__Germany__67: list<item: int64>
  child 0, item: int64
Aarau__Switzerland__1397: list<item: int64>
  child 0, item: int64
Acilia__Italy__3894: list<item: int64>
  child 0, item: int64
Aix-en-Provence__France__4221: list<item: int64>
  child 0, item: int64
Albacete__Spain__4179: list<item: int64>
  child 0, item: int64
Albano_Laziale__Italy__4146: list<item: int64>
  child 0, item: int64
Alcala_de_Henares__Spain__3797: list<item: int64>
  child 0, item: int64
Alcoi__Alcoy__Spain__4559: list<item: int64>
  child 0, item: int64
Aldershot__United_Kingdom__5553: list<item: int64>
  child 0, item: int64
Alessandria__Italy__555: list<item: int64>
  child 0, item: int64
Alkmaar__Netherlands__1394: list<item: int64>
  child 0, item: int64
Almelo__Netherlands__3504: list<item: int64>
  child 0, item: int64
Almere__Netherlands__2349: list<item: int64>
  child 0, item: int64
Alphen_aan_den_Rijn__Netherlands__1291: list<item: int64>
  child 0, item: int64
Altamura__Italy__5165: list<item: int64>
  child 0, item: int64
Amersfoort__Netherlands__2494: list<item: int64>
  child 0, item: int64
Amiens__France__3000: list<item: int64>
  child 0, item: int64
Amsterdam__Netherlands__1590: list<item: int64>
  child 0, item: int64
Ancona__Italy__4338: list<item: int64>
  child 0, item: int64
Andria__Italy__5013: list<item: int64>
  child 0, item: int64
Angers__France__1388: list<item: int64>
  child 0, item: int64
Angouleme__France__1773: list<item: int64>
  child 0, item: int64
Annecy__Franc
...
t<item: int64>
  child 0, item: int64
Zilina__Slovakia__568: list<item: int64>
  child 0, item: int64
Zurich__Switzerland__1689: list<item: int64>
  child 0, item: int64
Zwickau__Germany__5382: list<item: int64>
  child 0, item: int64
Zwolle__Netherlands__3290: list<item: int64>
  child 0, item: int64
s-Hertogenbosch__Netherlands__2423: list<item: int64>
  child 0, item: int64
cities: list<item: struct<city_key: string, city: string, country: string, ghsl_id: string, representative_l (... 489 chars omitted)
  child 0, item: struct<city_key: string, city: string, country: string, ghsl_id: string, representative_lon: double, (... 477 chars omitted)
      child 0, city_key: string
      child 1, city: string
      child 2, country: string
      child 3, ghsl_id: string
      child 4, representative_lon: double
      child 5, representative_lat: double
      child 6, ghsl_grid_cells: int64
      child 7, modmask_target_cells: int64
      child 8, successful_uhi_cells: int64
      child 9, failed_rural_search_cells: int64
      child 10, non_modmask_target_ghsl_cells: int64
      child 11, city_mask_source: string
      child 12, rural_reference_cells_UHI_px: int64
      child 13, rural_reference_cells_UHI_LR100: int64
      child 14, rural_reference_cells_UHI_LR200: int64
      child 15, rural_reference_cells_UHI_LR300: int64
      child 16, rural_reference_cells_UHI_LR500: int64
      child 17, uhi_success_percent_of_targets: double
      child 18, eligible_for_full_export: bool
to
{'cities': List({'city_key': Value('string'), 'city': Value('string'), 'country': Value('string'), 'ghsl_id': Value('string'), 'representative_lon': Value('float64'), 'representative_lat': Value('float64'), 'ghsl_grid_cells': Value('int64'), 'modmask_target_cells': Value('int64'), 'successful_uhi_cells': Value('int64'), 'failed_rural_search_cells': Value('int64'), 'non_modmask_target_ghsl_cells': Value('int64'), 'city_mask_source': Value('string'), 'rural_reference_cells_UHI_px': Value('int64'), 'rural_reference_cells_UHI_LR100': Value('int64'), 'rural_reference_cells_UHI_LR200': Value('int64'), 'rural_reference_cells_UHI_LR300': Value('int64'), 'rural_reference_cells_UHI_LR500': Value('int64'), 'uhi_success_percent_of_targets': Value('float64'), 'eligible_for_full_export': Value('bool')})}
because column names don't match
Traceback:    Traceback (most recent call last):
                File "/src/services/worker/src/worker/utils.py", line 147, in get_rows_or_raise
                  return get_rows(
                      dataset=dataset,
                  ...<4 lines>...
                      column_names=column_names,
                  )
                File "/src/libs/libcommon/src/libcommon/utils.py", line 272, in decorator
                  return func(*args, **kwargs)
                File "/src/services/worker/src/worker/utils.py", line 127, in get_rows
                  rows_plus_one = list(itertools.islice(safe_iter(ds, dataset=dataset), rows_max_number + 1))
                File "/src/services/worker/src/worker/utils.py", line 483, in safe_iter
                  yield from ds.decode(False) if ds.features else ds
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2840, in __iter__
                  for key, example in ex_iterable:
                                      ^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2373, in __iter__
                  for key, pa_table in self._iter_arrow():
                                       ~~~~~~~~~~~~~~~~^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2398, in _iter_arrow
                  for key, pa_table in self.ex_iterable._iter_arrow():
                                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 536, in _iter_arrow
                  for key, pa_table in iterator:
                                       ^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 419, in _iter_arrow
                  for key, pa_table in self.generate_tables_fn(**gen_kwags):
                                       ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 343, in _generate_tables
                  self._cast_table(pa_table, json_field_paths=json_field_paths),
                  ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 132, in _cast_table
                  pa_table = table_cast(pa_table, self.info.features.arrow_schema)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2378, in table_cast
                  return cast_table_to_schema(table, schema)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2306, in cast_table_to_schema
                  raise CastError(
                  ...<3 lines>...
                  )
              datasets.table.CastError: Couldn't cast
              Aachen__Germany__67: list<item: int64>
                child 0, item: int64
              Aarau__Switzerland__1397: list<item: int64>
                child 0, item: int64
              Acilia__Italy__3894: list<item: int64>
                child 0, item: int64
              Aix-en-Provence__France__4221: list<item: int64>
                child 0, item: int64
              Albacete__Spain__4179: list<item: int64>
                child 0, item: int64
              Albano_Laziale__Italy__4146: list<item: int64>
                child 0, item: int64
              Alcala_de_Henares__Spain__3797: list<item: int64>
                child 0, item: int64
              Alcoi__Alcoy__Spain__4559: list<item: int64>
                child 0, item: int64
              Aldershot__United_Kingdom__5553: list<item: int64>
                child 0, item: int64
              Alessandria__Italy__555: list<item: int64>
                child 0, item: int64
              Alkmaar__Netherlands__1394: list<item: int64>
                child 0, item: int64
              Almelo__Netherlands__3504: list<item: int64>
                child 0, item: int64
              Almere__Netherlands__2349: list<item: int64>
                child 0, item: int64
              Alphen_aan_den_Rijn__Netherlands__1291: list<item: int64>
                child 0, item: int64
              Altamura__Italy__5165: list<item: int64>
                child 0, item: int64
              Amersfoort__Netherlands__2494: list<item: int64>
                child 0, item: int64
              Amiens__France__3000: list<item: int64>
                child 0, item: int64
              Amsterdam__Netherlands__1590: list<item: int64>
                child 0, item: int64
              Ancona__Italy__4338: list<item: int64>
                child 0, item: int64
              Andria__Italy__5013: list<item: int64>
                child 0, item: int64
              Angers__France__1388: list<item: int64>
                child 0, item: int64
              Angouleme__France__1773: list<item: int64>
                child 0, item: int64
              Annecy__Franc
              ...
              t<item: int64>
                child 0, item: int64
              Zilina__Slovakia__568: list<item: int64>
                child 0, item: int64
              Zurich__Switzerland__1689: list<item: int64>
                child 0, item: int64
              Zwickau__Germany__5382: list<item: int64>
                child 0, item: int64
              Zwolle__Netherlands__3290: list<item: int64>
                child 0, item: int64
              s-Hertogenbosch__Netherlands__2423: list<item: int64>
                child 0, item: int64
              cities: list<item: struct<city_key: string, city: string, country: string, ghsl_id: string, representative_l (... 489 chars omitted)
                child 0, item: struct<city_key: string, city: string, country: string, ghsl_id: string, representative_lon: double, (... 477 chars omitted)
                    child 0, city_key: string
                    child 1, city: string
                    child 2, country: string
                    child 3, ghsl_id: string
                    child 4, representative_lon: double
                    child 5, representative_lat: double
                    child 6, ghsl_grid_cells: int64
                    child 7, modmask_target_cells: int64
                    child 8, successful_uhi_cells: int64
                    child 9, failed_rural_search_cells: int64
                    child 10, non_modmask_target_ghsl_cells: int64
                    child 11, city_mask_source: string
                    child 12, rural_reference_cells_UHI_px: int64
                    child 13, rural_reference_cells_UHI_LR100: int64
                    child 14, rural_reference_cells_UHI_LR200: int64
                    child 15, rural_reference_cells_UHI_LR300: int64
                    child 16, rural_reference_cells_UHI_LR500: int64
                    child 17, uhi_success_percent_of_targets: double
                    child 18, eligible_for_full_export: bool
              to
              {'cities': List({'city_key': Value('string'), 'city': Value('string'), 'country': Value('string'), 'ghsl_id': Value('string'), 'representative_lon': Value('float64'), 'representative_lat': Value('float64'), 'ghsl_grid_cells': Value('int64'), 'modmask_target_cells': Value('int64'), 'successful_uhi_cells': Value('int64'), 'failed_rural_search_cells': Value('int64'), 'non_modmask_target_ghsl_cells': Value('int64'), 'city_mask_source': Value('string'), 'rural_reference_cells_UHI_px': Value('int64'), 'rural_reference_cells_UHI_LR100': Value('int64'), 'rural_reference_cells_UHI_LR200': Value('int64'), 'rural_reference_cells_UHI_LR300': Value('int64'), 'rural_reference_cells_UHI_LR500': Value('int64'), 'uhi_success_percent_of_targets': Value('float64'), 'eligible_for_full_export': Value('bool')})}
              because column names don't match

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MODMask All Cities UHI

Web-ready urban heat island products generated with MOD_Mask.

The dataset contains:

  • GHSL city catalogue and geometries
  • AROME grid-cell geometries
  • city-to-grid membership
  • MOD_Mask diagnostics
  • monthly mean UHI
  • mean diurnal UHI cycle

Available UHI definitions:

  • UHI_px
  • UHI_LR100
  • UHI_LR200
  • UHI_LR300
  • UHI_LR500
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