error message when trying to fit model parameters to data-set
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Can you please tell me what to do when this message appears:
Fit could not be computed due to error:
Complex value computed by model function, fitting cannot continue. Try using or tightening upper and lower bounds on coefficients.
I already tightened the parameter boundaries to the max, where I still expect reliable data. Could there be another reason why I can not get the fitting done? Granted, my function is a exotic one, derived from an equivalent circuit model.
Thank you for your help
2 个评论
Star Strider
2012-8-24
Are you fitting real (time-domain) or complex (frequency-domain) data? Are you using nlinfit, lsqcurvefit, or the Curve Fitting Toolbox?
RAJESH AGARWAL
2015-8-3
Yes
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2012-8-24
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