Initial_guess

[merung1203]

Hello

How do I set the initial value when fitting a circuit?

I am using the intercept for R0, but I would like to know how to set the rest.
I would like to know why these initial values ​​are entered in the example code below.

example code)
from impedance.models.circuits import CustomCircuit

circuit = 'R0-p(R1,C1)-p(R2-Wo1,C2)'
initial_guess = [.01, .01, 100, .01, .05, 100, 1]

circuit = CustomCircuit(circuit, initial_guess=initial_guess)

If the initial value is set incorrectly, an error occurs. I wonder if it is possible to set the initial value as a range.
Thank you.

[jianzuo]

Hi, did you manage to solve the initial value issue? I have a similar issue,
when the initial value is not properly decided, the fitted curve is inaccurate.

[quiksilver10152]

Try using the global optimization algorithm setting.
circuit.fit(frequencies, Z, global_opt = True)