Episodes Preview eyou_ft7_follower Visualizer
46 episodes · 30 fps

cables_v6 TsFile

This repository is a TsFile conversion of 1g0rrr/cables_v6, a LeRobot dataset published by Igor (1g0rrr). The task is Insert cable into the connector using an eyou_ft7_follower robot. The original dataset is licensed under Apache-2.0. No paper or complete BibTeX citation was provided by the original dataset card.

Dataset summary

  • Split: train
  • Source episode files / series: 46
  • Rows / frames: 20,063
  • Tasks: 1
  • Sampling frequency: 30 fps
  • Source Parquet shards: 46 files under data/chunk-000/
  • Converted output: one merged table-model TsFile, data/cables_v6.tsfile
  • Table: cables_v6
  • TsFile/source-Parquet size ratio: 0.5426

Schema

episode_index and task_index are native TsFile TAG columns. All other measurements are FIELD columns, except Time, which is the table time column.

Column TsFile type Role
time TIMESTAMP TIME
episode_index STRING TAG
task_index STRING TAG
frame_index INT64 FIELD
sample_index INT64 FIELD
action_0 FLOAT FIELD
action_1 FLOAT FIELD
action_2 FLOAT FIELD
action_3 FLOAT FIELD
action_4 FLOAT FIELD
action_5 FLOAT FIELD
action_6 FLOAT FIELD
observation_state_0 FLOAT FIELD
observation_state_1 FLOAT FIELD
observation_state_2 FLOAT FIELD
observation_state_3 FLOAT FIELD
observation_state_4 FLOAT FIELD
observation_state_5 FLOAT FIELD
observation_state_6 FLOAT FIELD

action and observation.state are flattened from 7-element float32 vectors to action_0..action_6 and observation_state_0..observation_state_6. The element order is shoulder_pan.pos, shoulder_lift.pos, elbow_flex.pos, wrist_flex.pos, wrist_side.pos, wrist_roll.pos, and gripper.pos. The source index column is renamed to sample_index; frame_index is kept.

Time and storage

Time = round(timestamp * 1000) in milliseconds and restarts at 0 within each episode. The redundant source timestamp column is dropped because it equals Time / 1000 seconds. No numeric rows, state dimensions, action dimensions, or task values are dropped.

  • FLOAT/DOUBLE: GORILLA + LZ4
  • INT32/INT64: TS_2DIFF + LZ4
  • Time: TS_2DIFF + LZ4
  • BOOLEAN: RLE + LZ4 (the source has no BOOLEAN fields)
  • TAG values: native TsFile table device/tag storage

The physical encodings and compression were read back from the generated file with the Apache TsFile Java reader, not inferred only from the YAML config.

Videos and episode alignment

Original AV1 videos are stored at https://huggingface.co/datasets/1g0rrr/cables_v6/tree/main/videos/chunk-000 in three camera directories: observation.images.laptop, observation.images.phone, and observation.images.side. Videos are not included in this TsFile dataset.

The source repository deleted original episodes 17, 18, 20, and 41, then renamed Parquet and video filenames to 0..45 without rewriting the internal Parquet episode_index. This conversion preserves the source column as the TsFile TAG. To align a TsFile row with the renamed video file, keep frame_index unchanged and map TAG episode_index as follows:

Source TAG episode_index Video filename episode index
0..16 unchanged
19 17
21..40 source value minus 3
42..49 source value minus 4

The complete 46-entry mapping is also stored in meta/info.json under tsfile_conversion.video_episode_alignment.

Read example

from tsfile import TsFileReader

path = "data/cables_v6.tsfile"
reader = TsFileReader(path)
print(reader.get_all_table_schemas()["cables_v6"])

columns = ["episode_index", "task_index", "frame_index", "action_0"]
with reader.query_table("cables_v6", columns, batch_size=4096) as result:
    batch = result.read_arrow_batch()
    print(batch.slice(0, 5).to_pandas())

Attribution

  • Original dataset: 1g0rrr/cables_v6
  • Publisher/author: Igor (1g0rrr)
  • License: Apache-2.0
  • Original task: Insert cable into the connector
  • Citation: the original card states [More Information Needed]
Downloads last month
20