Stream.resample():ValueError: Unknown window type "hanning" (scipy 1.9 deprecation known issue)

Usage Questions
1

Hello everyone. When I use the same stream. resample() function to resample continuous waveforms in different Anaconda virtual environments, different results appear.
In the first virtual environment ‘pygmt’：

import obspy


def example():
    path = 'E:\\Documents_zoom\\Programs\\download-seisdata-with-obspy-master\\Down_waveforms\\WAVEFORMS'
    st = obspy.read(pathname_or_url=path + '\\2022.08.14.08.00.00.IC.BJT.00.MSEED')
    st = st.resample(100)
    print(st)
    return 0


example()

The operation result is:

D:\Scientific_zoom\Anaconda_zoom\envs\pygmt\python.exe E:/Documents_zoom/Programs/download-seisdata-with-obspy-master/test.py
3 Trace(s) in Stream:
IC.BJT.00.BH1 | 2022-08-14T08:00:00.019538Z - 2022-08-14T09:00:00.009538Z | 100.0 Hz, 360000 samples
IC.BJT.00.BH2 | 2022-08-14T08:00:00.019538Z - 2022-08-14T09:00:00.009538Z | 100.0 Hz, 360000 samples
IC.BJT.00.BHZ | 2022-08-14T08:00:00.019538Z - 2022-08-14T09:00:00.009538Z | 100.0 Hz, 360000 samples

Run the same code in another virtual environment ‘pytorch’:

import obspy


def example():
    path = 'E:\\Documents_zoom\\Programs\\download-seisdata-with-obspy-master\\Down_waveforms\\WAVEFORMS'
    st = obspy.read(pathname_or_url=path + '\\2022.08.14.08.00.00.IC.BJT.00.MSEED')
    st = st.resample(100)
    print(st)
    return 0


example()

But an error occurred:

Traceback (most recent call last):
  File "D:\Scientific_zoom\Anaconda_zoom\envs\pytorch\lib\site-packages\scipy\signal\windows\_windows.py", line 2214, in get_window
    beta = float(window)
ValueError: could not convert string to float: 'hanning'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "D:\Scientific_zoom\Anaconda_zoom\envs\pytorch\lib\site-packages\scipy\signal\windows\_windows.py", line 2232, in get_window
    winfunc = _win_equiv[winstr]
KeyError: 'hanning'

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

Traceback (most recent call last):
  File "E:\Documents_zoom\Programs\yuzy\test.py", line 12, in <module>
    example()
  File "E:\Documents_zoom\Programs\yuzy\test.py", line 7, in example
    st = st.resample(100)
  File "D:\Scientific_zoom\Anaconda_zoom\envs\pytorch\lib\site-packages\obspy\core\stream.py", line 2351, in resample
    tr.resample(sampling_rate, window=window,
  File "D:\Scientific_zoom\Anaconda_zoom\envs\pytorch\lib\site-packages\decorator.py", line 232, in fun
    return caller(func, *(extras + args), **kw)
  File "D:\Scientific_zoom\Anaconda_zoom\envs\pytorch\lib\site-packages\obspy\core\util\decorator.py", line 237, in skip_if_no_data
    return func(*args, **kwargs)
  File "D:\Scientific_zoom\Anaconda_zoom\envs\pytorch\lib\site-packages\decorator.py", line 232, in fun
    return caller(func, *(extras + args), **kw)
  File "D:\Scientific_zoom\Anaconda_zoom\envs\pytorch\lib\site-packages\obspy\core\trace.py", line 282, in _add_processing_info
    result = func(*args, **kwargs)
  File "D:\Scientific_zoom\Anaconda_zoom\envs\pytorch\lib\site-packages\obspy\core\trace.py", line 1744, in resample
    large_w = np.fft.ifftshift(get_window(window,
  File "D:\Scientific_zoom\Anaconda_zoom\envs\pytorch\lib\site-packages\scipy\signal\windows\_windows.py", line 2234, in get_window
    raise ValueError("Unknown window type.") from e
ValueError: Unknown window type.

The configuration of the virtual environment pygmt is:
ObsPy Version=='1.3.0'; Operating System=='win 10'; Python Version=='3.9.13'; Installation Method=='pip'
The configuration of the virtual environment pytorch is:
ObsPy Version=='1.3.0'; Operating System=='win 10'; Python Version=='3.9.12'; Installation Method=='pip'
If anyone knows the solution, please contact me. Thank you.

2

This is due to different scipy versions in your environments. See the issue here and related PR for more information and workarounds.

1 Like
3

Follow the method you gave, now the problem is solved :laughing:. Thank you very much for your help.