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The dataset viewer is not available for this split.
Cannot load the dataset split (in streaming mode) to extract the first rows.
Error code:   StreamingRowsError
Exception:    CastError
Message:      Couldn't cast
task: string
instruction: string
recording_fps: int64
hf_repo_id: string
replay_session: string
target_episodes: int64
final_sidecar_episodes: int64
sources: list<item: struct<accepted_name: string, source: string, episodes_used: int64, episodes_skipped_by_q (... 18 chars omitted)
  child 0, item: struct<accepted_name: string, source: string, episodes_used: int64, episodes_skipped_by_quarantine:  (... 6 chars omitted)
      child 0, accepted_name: string
      child 1, source: string
      child 2, episodes_used: int64
      child 3, episodes_skipped_by_quarantine: int64
chunks_size: int64
codebase_version: string
features: struct<Time: struct<dtype: string, shape: list<item: int64>, tsfile_role: string, unit: string>, epi (... 5434 chars omitted)
  child 0, Time: struct<dtype: string, shape: list<item: int64>, tsfile_role: string, unit: string>
      child 0, dtype: string
      child 1, shape: list<item: int64>
          child 0, item: int64
      child 2, tsfile_role: string
      child 3, unit: string
  child 1, episode_index: struct<dtype: string, shape: list<item: int64>, tsfile_role: string>
      child 0, dtype: string
      child 1, shape: list<item: int64>
          child 0, item: int64
      child 2, tsfile_role: string
  child 2, task_index: struct<dtype: string, shape: list<item: int64>, tsfile_role: string>
      child 0, dtype: string
      child 1, shape: list<item: int64>
          child 0, item: int64
      child 2, tsfile_role: string
  child 3, frame_index
...
4, video.codec: string, video.pix_fmt: string, video.is (... 75 chars omitted)
              child 0, video.height: int64
              child 1, video.width: int64
              child 2, video.codec: string
              child 3, video.pix_fmt: string
              child 4, video.is_depth_map: bool
              child 5, video.fps: int64
              child 6, video.channels: int64
              child 7, has_audio: bool
      child 1, observation.images.left_wrist: struct<dtype: string, shape: list<item: int64>, names: list<item: string>, info: struct<video.height (... 157 chars omitted)
          child 0, dtype: string
          child 1, shape: list<item: int64>
              child 0, item: int64
          child 2, names: list<item: string>
              child 0, item: string
          child 3, info: struct<video.height: int64, video.width: int64, video.codec: string, video.pix_fmt: string, video.is (... 75 chars omitted)
              child 0, video.height: int64
              child 1, video.width: int64
              child 2, video.codec: string
              child 3, video.pix_fmt: string
              child 4, video.is_depth_map: bool
              child 5, video.fps: int64
              child 6, video.channels: int64
              child 7, has_audio: bool
  child 16, original_video_source: string
  child 17, video_policy: string
total_tasks: int64
video_path_original: string
total_frames: int64
data_path: string
video_files_size_in_mb: int64
data_files_size_in_mb: int64
to
{'codebase_version': Value('string'), 'robot_type': Value('string'), 'total_episodes': Value('int64'), 'total_frames': Value('int64'), 'total_tasks': Value('int64'), 'chunks_size': Value('int64'), 'data_files_size_in_mb': Value('int64'), 'video_files_size_in_mb': Value('int64'), 'fps': Value('int64'), 'splits': {'train': Value('string')}, 'data_path': Value('string'), 'features': {'Time': {'dtype': Value('string'), 'shape': List(Value('int64')), 'tsfile_role': Value('string'), 'unit': Value('string')}, 'episode_index': {'dtype': Value('string'), 'shape': List(Value('int64')), 'tsfile_role': Value('string')}, 'task_index': {'dtype': Value('string'), 'shape': List(Value('int64')), 'tsfile_role': Value('string')}, 'frame_index': {'dtype': Value('string'), 'shape': List(Value('int64')), 'tsfile_role': Value('string')}, 'sample_index': {'dtype': Value('string'), 'shape': List(Value('int64')), 'tsfile_role': Value('string')}, 'observation_gripper_binary': {'dtype': Value('string'), 'shape': List(Value('int64')), 'tsfile_role': Value('string')}, 'skill_natural_language': {'dtype': Value('string'), 'shape': List(Value('int64')), 'tsfile_role': Value('string')}, 'skill_verification_question': {'dtype': Value('string'), 'shape': List(Value('int64')), 'tsfile_role': Value('string')}, 'skill_type': {'dtype': Value('string'), 'shape': List(Value('int64')), 'tsfile_role': Value('string')}, 'skill_progress': {'dtype': Value('string'), 'shape': List(Value('int64')), 'tsfile_role': Value('str
...
'skill.goal_position.robot_xyzrpy': List(Value('string')), 'subtask.target_position': List(Value('string'))}, 'renamed_features': {'observation.gripper_binary': Value('string'), 'skill.natural_language': Value('string'), 'skill.verification_question': Value('string'), 'skill.type': Value('string'), 'skill.progress': Value('string'), 'skill.goal_position.gripper': Value('string'), 'subtask.natural_language': Value('string'), 'subtask.object_name': Value('string'), 'index': Value('string')}, 'dropped_features': List(Value('string')), 'omitted_features': List(Value('string')), 'original_video_path': Value('string'), 'original_video_features': {'observation.images.top': {'dtype': Value('string'), 'shape': List(Value('int64')), 'names': List(Value('string')), 'info': {'video.height': Value('int64'), 'video.width': Value('int64'), 'video.codec': Value('string'), 'video.pix_fmt': Value('string'), 'video.is_depth_map': Value('bool'), 'video.fps': Value('int64'), 'video.channels': Value('int64'), 'has_audio': Value('bool')}}, 'observation.images.left_wrist': {'dtype': Value('string'), 'shape': List(Value('int64')), 'names': List(Value('string')), 'info': {'video.height': Value('int64'), 'video.width': Value('int64'), 'video.codec': Value('string'), 'video.pix_fmt': Value('string'), 'video.is_depth_map': Value('bool'), 'video.fps': Value('int64'), 'video.channels': Value('int64'), 'has_audio': Value('bool')}}}, 'original_video_source': Value('string'), 'video_policy': Value('string')}}
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
              task: string
              instruction: string
              recording_fps: int64
              hf_repo_id: string
              replay_session: string
              target_episodes: int64
              final_sidecar_episodes: int64
              sources: list<item: struct<accepted_name: string, source: string, episodes_used: int64, episodes_skipped_by_q (... 18 chars omitted)
                child 0, item: struct<accepted_name: string, source: string, episodes_used: int64, episodes_skipped_by_quarantine:  (... 6 chars omitted)
                    child 0, accepted_name: string
                    child 1, source: string
                    child 2, episodes_used: int64
                    child 3, episodes_skipped_by_quarantine: int64
              chunks_size: int64
              codebase_version: string
              features: struct<Time: struct<dtype: string, shape: list<item: int64>, tsfile_role: string, unit: string>, epi (... 5434 chars omitted)
                child 0, Time: struct<dtype: string, shape: list<item: int64>, tsfile_role: string, unit: string>
                    child 0, dtype: string
                    child 1, shape: list<item: int64>
                        child 0, item: int64
                    child 2, tsfile_role: string
                    child 3, unit: string
                child 1, episode_index: struct<dtype: string, shape: list<item: int64>, tsfile_role: string>
                    child 0, dtype: string
                    child 1, shape: list<item: int64>
                        child 0, item: int64
                    child 2, tsfile_role: string
                child 2, task_index: struct<dtype: string, shape: list<item: int64>, tsfile_role: string>
                    child 0, dtype: string
                    child 1, shape: list<item: int64>
                        child 0, item: int64
                    child 2, tsfile_role: string
                child 3, frame_index
              ...
              4, video.codec: string, video.pix_fmt: string, video.is (... 75 chars omitted)
                            child 0, video.height: int64
                            child 1, video.width: int64
                            child 2, video.codec: string
                            child 3, video.pix_fmt: string
                            child 4, video.is_depth_map: bool
                            child 5, video.fps: int64
                            child 6, video.channels: int64
                            child 7, has_audio: bool
                    child 1, observation.images.left_wrist: struct<dtype: string, shape: list<item: int64>, names: list<item: string>, info: struct<video.height (... 157 chars omitted)
                        child 0, dtype: string
                        child 1, shape: list<item: int64>
                            child 0, item: int64
                        child 2, names: list<item: string>
                            child 0, item: string
                        child 3, info: struct<video.height: int64, video.width: int64, video.codec: string, video.pix_fmt: string, video.is (... 75 chars omitted)
                            child 0, video.height: int64
                            child 1, video.width: int64
                            child 2, video.codec: string
                            child 3, video.pix_fmt: string
                            child 4, video.is_depth_map: bool
                            child 5, video.fps: int64
                            child 6, video.channels: int64
                            child 7, has_audio: bool
                child 16, original_video_source: string
                child 17, video_policy: string
              total_tasks: int64
              video_path_original: string
              total_frames: int64
              data_path: string
              video_files_size_in_mb: int64
              data_files_size_in_mb: int64
              to
              {'codebase_version': Value('string'), 'robot_type': Value('string'), 'total_episodes': Value('int64'), 'total_frames': Value('int64'), 'total_tasks': Value('int64'), 'chunks_size': Value('int64'), 'data_files_size_in_mb': Value('int64'), 'video_files_size_in_mb': Value('int64'), 'fps': Value('int64'), 'splits': {'train': Value('string')}, 'data_path': Value('string'), 'features': {'Time': {'dtype': Value('string'), 'shape': List(Value('int64')), 'tsfile_role': Value('string'), 'unit': Value('string')}, 'episode_index': {'dtype': Value('string'), 'shape': List(Value('int64')), 'tsfile_role': Value('string')}, 'task_index': {'dtype': Value('string'), 'shape': List(Value('int64')), 'tsfile_role': Value('string')}, 'frame_index': {'dtype': Value('string'), 'shape': List(Value('int64')), 'tsfile_role': Value('string')}, 'sample_index': {'dtype': Value('string'), 'shape': List(Value('int64')), 'tsfile_role': Value('string')}, 'observation_gripper_binary': {'dtype': Value('string'), 'shape': List(Value('int64')), 'tsfile_role': Value('string')}, 'skill_natural_language': {'dtype': Value('string'), 'shape': List(Value('int64')), 'tsfile_role': Value('string')}, 'skill_verification_question': {'dtype': Value('string'), 'shape': List(Value('int64')), 'tsfile_role': Value('string')}, 'skill_type': {'dtype': Value('string'), 'shape': List(Value('int64')), 'tsfile_role': Value('string')}, 'skill_progress': {'dtype': Value('string'), 'shape': List(Value('int64')), 'tsfile_role': Value('str
              ...
              'skill.goal_position.robot_xyzrpy': List(Value('string')), 'subtask.target_position': List(Value('string'))}, 'renamed_features': {'observation.gripper_binary': Value('string'), 'skill.natural_language': Value('string'), 'skill.verification_question': Value('string'), 'skill.type': Value('string'), 'skill.progress': Value('string'), 'skill.goal_position.gripper': Value('string'), 'subtask.natural_language': Value('string'), 'subtask.object_name': Value('string'), 'index': Value('string')}, 'dropped_features': List(Value('string')), 'omitted_features': List(Value('string')), 'original_video_path': Value('string'), 'original_video_features': {'observation.images.top': {'dtype': Value('string'), 'shape': List(Value('int64')), 'names': List(Value('string')), 'info': {'video.height': Value('int64'), 'video.width': Value('int64'), 'video.codec': Value('string'), 'video.pix_fmt': Value('string'), 'video.is_depth_map': Value('bool'), 'video.fps': Value('int64'), 'video.channels': Value('int64'), 'has_audio': Value('bool')}}, 'observation.images.left_wrist': {'dtype': Value('string'), 'shape': List(Value('int64')), 'names': List(Value('string')), 'info': {'video.height': Value('int64'), 'video.width': Value('int64'), 'video.codec': Value('string'), 'video.pix_fmt': Value('string'), 'video.is_depth_map': Value('bool'), 'video.fps': Value('int64'), 'video.channels': Value('int64'), 'has_audio': Value('bool')}}}, 'original_video_source': Value('string'), 'video_policy': Value('string')}}
              because column names don't match

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phase1_pick_place_A1_10fps (TsFile)

Apache TsFile version of HyeonseokE/phase1_pick_place_A1_10fps.

Overview

A LeRobot robot manipulation dataset. Each frame holds the commanded action and observed observation.state joint positions; camera views are stored as videos in the original dataset.

  • Episodes: 100
  • Frames: 28459
  • Sampling rate: 10 fps
  • Tasks: 1
  • Split: a single train split
  • Robot: so101_follower
  • Cameras (not uploaded): top, left_wrist

Schema (TsFile structure)

All episodes share one TsFile with episode_index and task_index as TAG columns; query a single episode with WHERE episode_index = N.

  • Time (INT64, milliseconds) — round(timestamp * 1000); the source timestamp column is dropped (it equals Time / 1000).
  • episode_index (TAG) — device dimension.
  • task_index (TAG) — device dimension.
  • frame_index (INT64) — measurement.
  • sample_index (INT64) — measurement.
  • action_0..N (FLOAT) — commanded joints.
  • action.radian_urdf0_0..N (FLOAT) — measurement.
  • gripper_binary_0..N (FLOAT) — measurement.
  • radian_urdf0_0..N (FLOAT) — measurement.
  • robot_xyzrpy_0..N (FLOAT) — measurement.
  • skill.goal_position.gripper_0..N (FLOAT) — measurement.
  • skill.goal_position.joint_0..N (FLOAT) — measurement.
  • skill.goal_position.robot_xyzrpy_0..N (FLOAT) — measurement.
  • skill.natural_language_0..N (FLOAT) — measurement.
  • skill.progress_0..N (FLOAT) — measurement.
  • skill.type_0..N (FLOAT) — measurement.
  • skill.verification_question_0..N (FLOAT) — measurement.
  • state_0..N (FLOAT) — measurement.
  • subtask.natural_language_0..N (FLOAT) — measurement.
  • subtask.object_name_0..N (FLOAT) — measurement.
  • subtask.target_position_0..N (FLOAT) — measurement.

Vector columns are flattened element-wise with an index suffix.

Usage

Install the Apache TsFile Python SDK (pip install tsfile) and read a converted file:

from pathlib import Path
from tsfile import TsFileReader

path = Path("data/phase1_pick_place_A1_10fps.tsfile")
with TsFileReader(str(path)) as reader:
    schemas = reader.get_all_table_schemas()
    print("tables:", list(schemas))
    table_name = next(iter(schemas))
    table = schemas[table_name]
    columns = [column.get_column_name() for column in table.get_columns()]
    print("columns:", columns)
    field_names = [
        column.get_column_name()
        for column in table.get_columns()
        if column.get_column_name() not in {"Time", "time"}
    ]
    if field_names:
        with reader.query_table(table_name, field_names[:3], batch_size=1024) as result:
            batch = result.read_arrow_batch()
            if batch is not None:
                print(batch.to_pandas().head())

Source & license

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