Problems encountered in processing the shapenetV1 dataset

[rain2050]

Thank you for disclosing such an excellent work. When I was processing the shapenetV1 dataset, the program reported the following error. Do you know the reason? Looking forward to your reply.

/home/rain/anaconda3/envs/D-PCC/lib/python3.7/site-packages/numpy/core/fromnumeric.py:3373: RuntimeWarning: Mean of empty slice.
out=out, **kwargs)
/home/rain/anaconda3/envs/D-PCC/lib/python3.7/site-packages/numpy/core/_methods.py:163: RuntimeWarning: invalid value encountered in true_divide
ret, rcount, out=ret, casting='unsafe', subok=False)
Traceback (most recent call last):
File "/home/rain/D-PCC/prepare_shapenet.py", line 298, in
max_num=dataset_args.max_num, save_path='./data/shapenet')
File "/home/rain/D-PCC/prepare_shapenet.py", line 229, in generate_dataset
max_num=max_num, cur_sample_strategy=cur_sample_strategy)
File "/home/rain/D-PCC/prepare_shapenet.py", line 144, in divide_cube
xyzs , meta_data= normalize_pcd(xyzs)
File "/home/rain/D-PCC/prepare_shapenet.py", line 51, in normalize_pcd
max_coord, min_coord = np.max(xyzs), np.min(xyzs)
File "<array_function internals>", line 6, in amax
File "/home/rain/anaconda3/envs/D-PCC/lib/python3.7/site-packages/numpy/core/fromnumeric.py", line 2706, in amax
keepdims=keepdims, initial=initial, where=where)
File "/home/rain/anaconda3/envs/D-PCC/lib/python3.7/site-packages/numpy/core/fromnumeric.py", line 87, in _wrapreduction
return ufunc.reduce(obj, axis, dtype, out, **passkwargs)
ValueError: zero-size array to reduction operation maximum which has no identity