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Nlinfit: Warning: The Jacobian at the solution is ill-conditioned, and some model parameters may not be estimated well (they are not identifiable). Use caution in making predictions.

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satya kothapalli
satya kothapalli on 1 Sep 2018
Dear experts, I do have two independent variables: one is complex and another one is real data sets: of course the output measurements are complex data. Now I am trying to fit the model for several curves for doing the Joint analysis using nlinfit function. When I ran the fitting, I got a warning with ill-conditioned. Can you please provide the solution how to deal with the complex data in the nlinfit.
Thank you, Satya.

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