CODEWITHSUNDEEP
pythonpython-3.xmatlabscipy
strudel
strudel

Reputation: 15

Can scipy.signal function be called in MATLAB?

I have a python function that I need to call in MATLAB that imports functions from scipy.signal.

However when I attempt to call the function in MATLAB I get an error

Error using arpack><module> (line 45)
Python Error: ImportError: DLL load failed: The specified procedure could not be found.

Error in __init__><module> (line 22)
from .arpack import *

Error in __init__><module> (line 11)
from .arpack import *

Error in __init__><module> (line 117)
from .eigen import *

Error in _minimize><module> (line 21)
from scipy.sparse.linalg import LinearOperator

Error in __init__><module> (line 271)
from ._minimize import *

Error in filter_design><module> (line 18)
from scipy import special, optimize, fftpack

Error in __init__><module> (line 321)
from .filter_design import *

Error in <frozen importlib>_call_with_frames_removed (line 219)

Error in <frozen importlib>exec_module (line 728)

Error in <frozen importlib>_load_unlocked (line 677)

Error in <frozen importlib>_find_and_load_unlocked (line 967)

Error in <frozen importlib>_find_and_load (line 983)

Error in <frozen importlib>_gcd_import (line 1006)

Error in __init__>import_module (line 127)
    return _bootstrap._gcd_import(name[level:], package, level)

This occurs when both calling the python function from MATLAB or simply by typing

py.importlib.import_module('scipy.signal')

in the MATLAB command line. Attempting to call a scipy.signal function directly

py.scipy.signal.find_peaks()

throws the error

Undefined variable "py" or class "py.scipy.signal.find_peaks".

Importing (or calling) numpy, scipy, or numpy submodules on the other hand are all successful.

Is the scipy.signal submodule not able to be called in MATLAB, or have I missed something?

Upvotes: 1

Views: 322

Answers (1)

peterfranciscook
peterfranciscook

Reputation: 311

You should be able to call scipy.signal functions using this syntax e.g. myButterFilt = py.scipy.signal.butter(1,0.25)

Upvotes: 1

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