我正在尝试学习如何使用FLOW。当我尝试运行“ flow / example / rllib / traffic_light_grid.py”时，它一直返回“观测值超出预期值范围”错误，直到达到最大错误数为止。我不知道为什么只有这个例子出错而其他例子起作用了。有人可以帮我吗？错误示例如下所示：
ERROR trial_runner.py:550 -- Error processing event.
next_sample = ray_get_and_free(fut_sample)
File "/home/ming/miniconda3/envs/flow/lib/python3.6/site-packages/ray/rllib/utils/memory.py", line 33, in ray_get_and_free
result = ray.get(object_ids)
ray.exceptions.RayTaskError: ray_RolloutWorker:sample() (pid=6597, host=VirtualBox)
File "/home/ming/miniconda3/envs/flow/lib/python3.6/site-packages/ray/rllib/evaluation/rollout_worker.py", line 453, in sample
batches = [self.input_reader.next()]
File "/home/ming/miniconda3/envs/flow/lib/python3.6/site-packages/ray/rllib/evaluation/sampler.py", line 56, in next
batches = [self.get_data()]
File "/home/ming/miniconda3/envs/flow/lib/python3.6/site-packages/ray/rllib/evaluation/sampler.py", line 97, in get_data
item = next(self.rollout_provider)
File "/home/ming/miniconda3/envs/flow/lib/python3.6/site-packages/ray/rllib/evaluation/sampler.py", line 313, in _env_runner
soft_horizon)
File "/home/ming/miniconda3/envs/flow/lib/python3.6/site-packages/ray/rllib/evaluation/sampler.py", line 401, in _process_observations
policy_id).transform(raw_obs)
File "/home/ming/miniconda3/envs/flow/lib/python3.6/site-packages/ray/rllib/models/preprocessors.py", line 166, in transform
self.check_shape(observation)
File "/home/ming/miniconda3/envs/flow/lib/python3.6/site-packages/ray/rllib/models/preprocessors.py", line 61, in check_shape
self._obs_space, observation)
ValueError: ('Observation outside expected value range', Box(339,), array([0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. ,
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0. , 0. , 0. , 0. , 0. ,
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0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. ,
0.05 , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. ,
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0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0.42857143, 0. ,
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0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. ,
0. , 0. , 1. , 0. , 3. ,
1. , 1. , 3. , 3. , 0. ,
0. , 1. , 0. , 0. , 1. ,
0. , 0. , 1. , 0. , 0. ,
1. , 1. , 0. , 1. , 1. ,
0. , 0. , 1. , 1. ]))
我的SUMO版本是v1_1_0 + 0000-2147d155b1
谢谢
答案 0 :(得分：0)
检查 flow/flow/envs/merge.py 或其他文件下的文件。 有一个名为
的函数myInt设置低到-1000，高到1000