Some problems about simulations generation

[alantes]

Hi researchers,

Thank you for your marvellous work! I really enjoy your idea presented and am trying to get the project run on my own computer. However, I have problems running

python3 -m train_sim fit --config configs/sim.yaml --data.data_path <path/to/extracted/sim/dataset/folder> --config configs/logging_sim.yaml

even though I have already run:

python3 -m src.dataset_util.src.generate_dataset_meta <path/to/dataset> <number of samples> --n_workers <number of processes>
python3 -m src.dataset_util.src.visualize_dataset <path/to/dataset> <sample index> <filename_a.pdf> # Optional
python3 -m src.dataset_util.src.compute_cost_to_goal <path/to/dataset> --path_start_dist <distance in meter> --n_workers <number of processes> --n_paths <number of paths>
python3 -m src.dataset_util.src.visualize_dataset <path/to/dataset> <sample index> <filename_b.pdf> # Optional

The problems I have met are:

1. What should <path/to/extracted/sim/dataset/folder> be? I have generated the dataset in the./dataset folder. And the json files are stored in .dataset/meta/
2. When I set <path/to/extracted/sim/dataset/folder> as dataset. I got FileNotFound Error: "No such file or directory: '/xxx/dataset/sensor_polar_0/008007.png'". I do not have a sensor_polar_0 folder in my dataset folder. I wonder if there is something missing for the Simulation Dataset in the README guidance?
3. When I set <path/to/extracted/sim/dataset/folder> as dataset/meta, I got ValueError: "ValueError('num_samples should be a positive integer value, but got num_samples=0')". I think this indicates that <path/to/extracted/sim/dataset/folder> should be set to the dataset folder?

To conclude, I think there is something missing in the date generation process about how how convert the json files into pictures that pytorch lightening can take as training data. I would really appreciate it if you can provide me with some guidelines about how to tackle the issue.

Thank you in advance!