Add TsFile (converted from lerobot/aloha_static_battery)

.gitattributes

@@ -58,3 +58,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 # Video files - compressed
 *.mp4 filter=lfs diff=lfs merge=lfs -text
 *.webm filter=lfs diff=lfs merge=lfs -text
+data/aloha_static_battery.tsfile filter=lfs diff=lfs merge=lfs -text

README.md

@@ -1,3 +1,53 @@
----
-license: apache-2.0
----
+---
+license: apache-2.0
+tags:
+- TsFile
+- time-series
+configs:
+- config_name: default
+  data_files:
+  - split: train
+    path: data/aloha_static_battery.tsfile
+---
+
+# aloha_static_battery
+
+Converted from the Hugging Face dataset [`lerobot/aloha_static_battery`](https://huggingface.co/datasets/lerobot/aloha_static_battery) to Apache TsFile format.
+
+## Source Dataset
+
+- **Original dataset:** [`lerobot/aloha_static_battery`](https://huggingface.co/datasets/lerobot/aloha_static_battery)
+- **Authors:** LeRobot (Hugging Face)
+- **License:** apache-2.0
+
+Conversion notes:
+- LeRobot v3.0 robot dataset: 49 episodes, 29,400 frames, 50 fps, 1 task.
+- All episodes are stored in a single TsFile under
+  `data/aloha_static_battery.tsfile` with source columns `episode_index`
+  and `task_index` as TAG columns; query one episode with
+  `WHERE episode_index=N`.
+- Vector columns are flattened to single-precision FLOAT, preserving the
+  source column name: `.` is replaced with `_` and the element index is
+  appended.
+- Time is synthesized as `round(timestamp * 1000)` milliseconds, restarting
+  per episode. Dropped column: source `timestamp` (seconds), because it
+  equals `Time / 1000`. `frame_index` is kept and `index` is renamed to
+  `sample_index`.
+- Source camera videos are not included in this repository. They remain in
+  the original dataset under `videos/`.
+- `meta/` is mirrored from the source. `meta/info.json` describes the
+  converted TsFile schema.
+
+
+## Conversion Notes
+
+- Conversion mode: `script`
+- Time precision: `ms`
+- TsFile data files: `['data/aloha_static_battery.tsfile']`
+- Converter: `scripts/converters/lerobot.py`
+
+## Usage
+
+```python
+# Read the .tsfile files with the Apache TsFile Java/Python SDK.
+```

data/aloha_static_battery.tsfile

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+oid sha256:bdb847bb9c81c2e4e1160e1268ddaa5fc59f1fa46f0ed232023e33709bd3ecda
+size 1369290

meta/episodes/chunk-000/file-000.parquet

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+version https://git-lfs.github.com/spec/v1
+oid sha256:b7f0aec971cd4ee4937c9778f05e8a99ff316f82fe32e448ad96b849d040747c
+size 146292

meta/info.json

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+{
+  "codebase_version": "v3.0",
+  "robot_type": "unknown",
+  "total_episodes": 49,
+  "total_frames": 29400,
+  "total_tasks": 1,
+  "chunks_size": 1000,
+  "fps": 50,
+  "splits": {
+    "train": "0:49"
+  },
+  "data_path": "data/aloha_static_battery.tsfile",
+  "features": {
+    "Time": {
+      "dtype": "int64",
+      "shape": [
+        1
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+      "tsfile_role": "TIME",
+      "unit": "ms"
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+    },
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+      "tsfile_role": "FIELD"
+    },
+    "sample_index": {
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+        1
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+    },
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+  }
+}

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