Struct re_data_loader::lerobot::LeRobotDatasetInfo

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pub struct LeRobotDatasetInfo {
Show 13 fields
    pub robot_type: String,
    pub codebase_version: String,
    pub total_episodes: usize,
    pub total_frames: usize,
    pub total_tasks: usize,
    pub total_videos: usize,
    pub total_chunks: usize,
    pub chunks_size: usize,
    pub data_path: String,
    pub video_path: Option<String>,
    pub image_path: Option<String>,
    pub fps: usize,
    pub features: HashMap<String, Feature>,

}
Expand description

LeRobot dataset metadata.

This struct contains the metadata for a LeRobot dataset, and is loaded from the meta/info.json file of the dataset.

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§robot_type: String

The type of the robot.

§codebase_version: String

The version of the LeRobot codebase the dataset was created for.

§total_episodes: usize

The total number of unique episodes in the dataset.

§total_frames: usize

The total number of unique frames in the dataset.

§total_tasks: usize

The total number of unique tasks in the dataset.

§total_videos: usize

The total amount of videos in the dataset.

§total_chunks: usize

The total number of unique chunks in the dataset.

§chunks_size: usize

The amount of episodes per chunk.

This is used to determine the path to video and data files.

§data_path: String

The path template for accessing episode data files.

§video_path: Option<String>

The path template for accessing video files for an episode.

§image_path: Option<String>

The path template for accessing image files for an episode.

§fps: usize

The frame rate of the recorded episode data.

§features: HashMap<String, Feature>

A mapping of feature names to their respective Feature definitions.

Implementations§

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impl LeRobotDatasetInfo

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pub fn load_from_json_file( filepath: impl AsRef<Path>, ) -> Result<Self, LeRobotError>

Loads LeRobotDatasetInfo from a JSON file.

The LeRobot dataset info file is typically stored under meta/info.json.

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pub fn feature(&self, feature_key: &str) -> Option<&Feature>

Retrieve the metadata for a specific feature.

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pub fn chunk_index(&self, episode: EpisodeIndex) -> Result<usize, LeRobotError>

Computes the storage chunk index for a given episode.

Episodes are organized into chunks to optimize storage and retrieval. This method determines which chunk a specific episode belongs to based on the dataset’s chunk size.

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pub fn episode_data_path( &self, episode: EpisodeIndex, ) -> Result<PathBuf, LeRobotError>

Generates the file path for a given episode’s Parquet data.

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pub fn video_path( &self, feature_key: &str, episode: EpisodeIndex, ) -> Result<PathBuf, LeRobotError>

Generates the file path for a video observation of a given episode.

Trait Implementations§

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impl Debug for LeRobotDatasetInfo

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<'de> Deserialize<'de> for LeRobotDatasetInfo

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Serialize for LeRobotDatasetInfo

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more

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