plot_diagnostic function does not work

[gangfengma]

I got the following errors while calling model.plot_diagnostic(alpha=0.95) in the water level example. Can anybody help explain why? Thanks.

=======================================================================================
Extreme Values

Count: 94 Extraction method: BM
Type: high Block size: 365 days 05:49:12

                                     Model                                          

---

Model: MLE Distribution: genextreme
Log-likelihood: 18.026 AIC: -29.786

Free parameters: c=-0.266 Fixed parameters: All parameters are free
loc=1.353
scale=0.146

Traceback (most recent call last):
File "", line 1, in
Traceback (most recent call last):
File "", line 1, in
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/spawn.py", line 116, in spawn_main
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/spawn.py", line 116, in spawn_main
exitcode = _main(fd, parent_sentinel)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/spawn.py", line 125, in _main
exitcode = _main(fd, parent_sentinel)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/spawn.py", line 125, in _main
prepare(preparation_data)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/spawn.py", line 236, in prepare
prepare(preparation_data)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/spawn.py", line 236, in prepare
_fixup_main_from_path(data['init_main_from_path'])
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/spawn.py", line 287, in _fixup_main_from_path
_fixup_main_from_path(data['init_main_from_path'])
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/spawn.py", line 287, in _fixup_main_from_path
main_content = runpy.run_path(main_path,
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/runpy.py", line 268, in run_path
main_content = runpy.run_path(main_path,
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/runpy.py", line 268, in run_path
return _run_module_code(code, init_globals, run_name,
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/runpy.py", line 97, in _run_module_code
return _run_module_code(code, init_globals, run_name,
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/runpy.py", line 97, in _run_module_code
_run_code(code, mod_globals, init_globals,
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/runpy.py", line 87, in _run_code
_run_code(code, mod_globals, init_globals,
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/runpy.py", line 87, in _run_code
exec(code, run_globals)
File "/Users/gangfengma/Documents/MRSG2023/test_extreme.py", line 34, in
exec(code, run_globals)
File "/Users/gangfengma/Documents/MRSG2023/test_extreme.py", line 34, in
model.plot_diagnostic(alpha=0.95)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/pyextremes/eva.py", line 1633, in plot_diagnostic
model.plot_diagnostic(alpha=0.95)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/pyextremes/eva.py", line 1633, in plot_diagnostic
self.plot_return_values(
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/pyextremes/eva.py", line 1434, in plot_return_values
self.plot_return_values(
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/pyextremes/eva.py", line 1434, in plot_return_values
modeled_return_values = self.get_summary(
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/pyextremes/eva.py", line 1313, in get_summary
modeled_return_values = self.get_summary(
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/pyextremes/eva.py", line 1313, in get_summary
rv = self.get_return_value(
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/pyextremes/eva.py", line 1256, in get_return_value
rv = self.get_return_value(
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/pyextremes/eva.py", line 1256, in get_return_value
for value in self.model.get_return_value(
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/pyextremes/models/model_mle.py", line 127, in get_return_value
for value in self.model.get_return_value(
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/pyextremes/models/model_mle.py", line 127, in get_return_value
self._extend_fit_parameter_cache(n=n_extra_fit_parameters)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/pyextremes/models/model_mle.py", line 254, in _extend_fit_parameter_cache
self._extend_fit_parameter_cache(n=n_extra_fit_parameters)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/pyextremes/models/model_mle.py", line 254, in _extend_fit_parameter_cache
with multiprocessing.Pool(processes=n_cores) as pool:
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/context.py", line 119, in Pool
with multiprocessing.Pool(processes=n_cores) as pool:
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/context.py", line 119, in Pool
return Pool(processes, initializer, initargs, maxtasksperchild,
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/pool.py", line 212, in init
return Pool(processes, initializer, initargs, maxtasksperchild,
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/pool.py", line 212, in init
self._repopulate_pool()
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/pool.py", line 303, in _repopulate_pool
self._repopulate_pool()
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/pool.py", line 303, in _repopulate_pool
return self._repopulate_pool_static(self._ctx, self.Process,
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/pool.py", line 326, in _repopulate_pool_static
return self._repopulate_pool_static(self._ctx, self.Process,
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/pool.py", line 326, in _repopulate_pool_static
w.start()
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/process.py", line 121, in start
w.start()
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/process.py", line 121, in start
self._popen = self._Popen(self)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/context.py", line 284, in _Popen
self._popen = self._Popen(self)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/context.py", line 284, in _Popen
return Popen(process_obj)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/popen_spawn_posix.py", line 32, in init
super().init(process_obj)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/popen_fork.py", line 19, in init
return Popen(process_obj)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/popen_spawn_posix.py", line 32, in init
self._launch(process_obj)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/popen_spawn_posix.py", line 42, in _launch
super().init(process_obj)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/popen_fork.py", line 19, in init
self._launch(process_obj)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/popen_spawn_posix.py", line 42, in _launch
prep_data = spawn.get_preparation_data(process_obj._name)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/spawn.py", line 154, in get_preparation_data
prep_data = spawn.get_preparation_data(process_obj._name)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/spawn.py", line 154, in get_preparation_data
_check_not_importing_main()
_check_not_importing_main() File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/spawn.py", line 134, in _check_not_importing_main

File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/spawn.py", line 134, in _check_not_importing_main
raise RuntimeError('''
raise RuntimeError('''
RuntimeError: RuntimeError
An attempt has been made to start a new process before the
current process has finished its bootstrapping phase.

    This probably means that you are not using fork to start your
    child processes and you have forgotten to use the proper idiom
    in the main module:

        if __name__ == '__main__':
            freeze_support()
            ...

    The "freeze_support()" line can be omitted if the program
    is not going to be frozen to produce an executable.: 

    An attempt has been made to start a new process before the
    current process has finished its bootstrapping phase.

    This probably means that you are not using fork to start your
    child processes and you have forgotten to use the proper idiom
    in the main module:

        if __name__ == '__main__':
            freeze_support()
            ...

    The "freeze_support()" line can be omitted if the program
    is not going to be frozen to produce an executable.

[shenxiangzhuang]

Can you reformat the code and give the full code that reproduces the issue?

[georgebv]

This is a common issue, I recommend reading this thread #20