44 lines
1.4 KiB
Python
44 lines
1.4 KiB
Python
"""
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usage: `python tests/scripts/mock_dataset.py --in-data-dir data/pusht --out-data-dir tests/data/pusht`
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"""
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import argparse
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import shutil
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from tensordict import TensorDict
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from pathlib import Path
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def mock_dataset(in_data_dir, out_data_dir, num_frames=50):
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in_data_dir = Path(in_data_dir)
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out_data_dir = Path(out_data_dir)
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# load full dataset as a tensor dict
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in_td_data = TensorDict.load_memmap(in_data_dir / "replay_buffer")
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# use 1 frame to know the specification of the dataset
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# and copy it over `n` frames in the test artifact directory
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out_td_data = in_td_data[0].expand(num_frames).memmap_like(out_data_dir / "replay_buffer")
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# copy the first `n` frames so that we have real data
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out_td_data[:num_frames] = in_td_data[:num_frames].clone()
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# make sure everything has been properly written
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out_td_data.lock_()
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# copy the full statistics of dataset since it's pretty small
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in_stats_path = in_data_dir / "stats.pth"
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out_stats_path = out_data_dir / "stats.pth"
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shutil.copy(in_stats_path, out_stats_path)
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if __name__ == "__main__":
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parser = argparse.ArgumentParser(description="Create dataset")
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parser.add_argument("--in-data-dir", type=str, help="Path to input data")
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parser.add_argument("--out-data-dir", type=str, help="Path to save the output data")
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args = parser.parse_args()
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mock_dataset(args.in_data_dir, args.out_data_dir) |