create the nuscenes dataset

[be1ba1]

hi when i run the
python tools/create_data.py nuscenes_data_prep --root_path="data/nuScenes/" --version="v1.0-trainval" --nsweeps=10
command, i came across such error:
Loading NuScenes tables for version v1.0-test...
Traceback (most recent call last):
File "tools/create_data.py", line 111, in
fire.Fire()
File "/home/rslab/anaconda3/envs/sjm_vista/lib/python3.7/site-packages/fire/core.py", line 143, in Fire
component_trace = _Fire(component, args, parsed_flag_args, context, name)
File "/home/rslab/anaconda3/envs/sjm_vista/lib/python3.7/site-packages/fire/core.py", line 482, in _Fire
target=component.name)
File "/home/rslab/anaconda3/envs/sjm_vista/lib/python3.7/site-packages/fire/core.py", line 693, in _CallAndUpdateTrace
component = fn(*varargs, **kwargs)
File "tools/create_data.py", line 97, in nuscenes_data_prep_test
root_path, version='v1.0-test', nsweeps=nsweeps)
File "/home/rslab/sjm/VISTA/det3d/datasets/nuscenes/nusc_common.py", line 699, in create_nuscenes_infos
nusc = NuScenes(version=version, dataroot=root_path, verbose=True)
File "/home/rslab/anaconda3/envs/sjm_vista/lib/python3.7/site-packages/nuscenes_zbj-1.0.2-py3.7.egg/nuscenes/nuscenes.py", line 63, in init
self.category = self.load_table('category')
File "/home/rslab/anaconda3/envs/sjm_vista/lib/python3.7/site-packages/nuscenes_zbj-1.0.2-py3.7.egg/nuscenes/nuscenes.py", line 99, in load_table
with open(osp.join(self.table_root, '{}.json'.format(table_name))) as f:
FileNotFoundError: [Errno 2] No such file or directory: 'data/NUSCENES_TEST/v1.0-test/category.json'

could you help me? thanks!