name 'scan' is not defined

[youkenhou]

@tatarchm First of all, thank you for your great work. I'm trying to train on a different outdoor dataset so I followed the experiment of semantic3d. However I got the following error during training.

Traceback (most recent call last):
  File "/usr/local/lib/python3.5/dist-packages/joblib/externals/loky/process_executor.py", line 420, in _process_worker
    r = call_item.fn(*call_item.args, **call_item.kwargs)
  File "/usr/local/lib/python3.5/dist-packages/joblib/_parallel_backends.py", line 563, in __call__
    return self.func(*args, **kwargs)
  File "/usr/local/lib/python3.5/dist-packages/joblib/parallel.py", line 261, in __call__
    for func, args, kwargs in self.items]
  File "/usr/local/lib/python3.5/dist-packages/joblib/parallel.py", line 261, in <listcomp>
    for func, args, kwargs in self.items]
  File "util/cloud.py", line 232, in get_scan_part_out
    num_scales = len(scan.clouds)
NameError: name 'scan' is not defined
"""

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "tc.py", line 26, in <module>
    run_net(config, "train")
  File "util/model.py", line 399, in run_net
    nn.precompute_validation_batches()
  File "util/model.py", line 114, in precompute_validation_batches
    batch_array = get_batch_array(test_scan, self.par)
  File "util/cloud.py", line 325, in get_batch_array
    delayed(get_scan_part_out)(par, pts[i]) for i in range(0, arr_size))
  File "/usr/local/lib/python3.5/dist-packages/joblib/parallel.py", line 996, in __call__
    self.retrieve()
  File "/usr/local/lib/python3.5/dist-packages/joblib/parallel.py", line 899, in retrieve
    self._output.extend(job.get(timeout=self.timeout))
  File "/usr/local/lib/python3.5/dist-packages/joblib/_parallel_backends.py", line 517, in wrap_future_result
    return future.result(timeout=timeout)
  File "/usr/lib/python3.5/concurrent/futures/_base.py", line 405, in result
    return self.__get_result()
  File "/usr/lib/python3.5/concurrent/futures/_base.py", line 357, in __get_result
    raise self._exception
NameError: name 'scan' is not defined

In the code file cloud.py, I noticed that the function get_scan_part_out is called by get_batch_array. Just give a try, I added a parameter def get_scan_part_out(scan, par, point=None, sample_type='POINT'): and added an argument delayed(get_scan_part_out)(scan, par, pts[i]) for i in range(0, arr_size). However I ran into another error as following

joblib.externals.loky.process_executor._RemoteTraceback: 
"""
Traceback (most recent call last):
  File "/usr/local/lib/python3.5/dist-packages/joblib/externals/loky/process_executor.py", line 420, in _process_worker
    r = call_item.fn(*call_item.args, **call_item.kwargs)
  File "/usr/local/lib/python3.5/dist-packages/joblib/_parallel_backends.py", line 563, in __call__
    return self.func(*args, **kwargs)
  File "/usr/local/lib/python3.5/dist-packages/joblib/parallel.py", line 261, in __call__
    for func, args, kwargs in self.items]
  File "/usr/local/lib/python3.5/dist-packages/joblib/parallel.py", line 261, in <listcomp>
    for func, args, kwargs in self.items]
  File "util/cloud.py", line 249, in get_scan_part_out
    [k_valid, idx_valid, _] = scan.trees[0].search_radius_vector_3d(random_point, radius=par.valid_rad)
RuntimeError: search_radius_vector_3d() error!
"""

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "tc.py", line 26, in <module>
    run_net(config, "train")
  File "util/model.py", line 399, in run_net
    nn.precompute_validation_batches()
  File "util/model.py", line 114, in precompute_validation_batches
    batch_array = get_batch_array(test_scan, self.par)
  File "util/cloud.py", line 329, in get_batch_array
    delayed(get_scan_part_out)(scan, par, pts[i]) for i in range(0, arr_size))
  File "/usr/local/lib/python3.5/dist-packages/joblib/parallel.py", line 996, in __call__
    self.retrieve()
  File "/usr/lib/python3.5/contextlib.py", line 77, in __exit__
    self.gen.throw(type, value, traceback)
  File "/usr/local/lib/python3.5/dist-packages/joblib/_parallel_backends.py", line 148, in retrieval_context
    yield
  File "/usr/local/lib/python3.5/dist-packages/joblib/parallel.py", line 996, in __call__
    self.retrieve()
  File "/usr/local/lib/python3.5/dist-packages/joblib/parallel.py", line 899, in retrieve
    self._output.extend(job.get(timeout=self.timeout))
  File "/usr/local/lib/python3.5/dist-packages/joblib/_parallel_backends.py", line 517, in wrap_future_result
    return future.result(timeout=timeout)
  File "/usr/lib/python3.5/concurrent/futures/_base.py", line 405, in result
    return self.__get_result()
  File "/usr/lib/python3.5/concurrent/futures/_base.py", line 357, in __get_result
    raise self._exception
RuntimeError: search_radius_vector_3d() error!

I'm using ubuntu16.04, python3.5 and tesorflow1.3.0. I'm new to python. Could you please tell me how to resolve it or any reason that may cause it? Thank you very much.

[MiZhenxing]

I encountered the same problem. It's a case of joblib. Do not use the latest version of joblib. I used joblib-0.11 and did not get an error.

[youkenhou]

@MiZhenxing Excellent! It works now. Thank you so much.