Hi Yannik,
I understand that you are encountering an error when calling the ‘feedforwardnet’ function from MATLAB using python.
It seems the error is due to the line:
ffnet = eng.feedforwardnet(20.0)
To resolve this issue, you can modify the code as follows:
layer_size = matlab.double(20)
ffnet = eng.feedforwardnet(layer_size)
I also found a similar query on MathWorks community that you can refer to for additional guidance:
Hope this helps!