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calling python function from Matlab

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I have following python code line that I want to call from matlab
def circularize_image(IM, method="lsq", center=None):
I could sucessfully excecute for defining two variable IM and 'lsq'
py.abel.tools.circularize.circularize_image(IM,'lsq')
But I have problem in defining None for the center value. Any suggestion ?
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Accepted Answer

Mohammad Sami
Mohammad Sami on 15 Jul 2020
Moved to answer
According to the docs, a missing string value will translate to none in python.
s = string(missing);
py.abel.tools.circularize.circularize_image(IM,'lsq',s)

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