Ellis is a curve-fitting package exclusively for fitting complex functions of one independent variable. It has been used extensively in the optimization of electrochemical impedance models including simple Randles cells, Warburg diffusion elements, as well as more complicated models such as transmission lines and the point defect model of passivity.

A library of common impedance circuits are included as well as a nicely-commented template for writing your own.

View a 91-second quickstart video here: http://vimeo.com/43998169

a 24-minute orientation video is found at https://vimeo.com/55193617

NOTE: Depends on gencurvefit being installed.

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