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A self-contained C library for Levenberg-Marquardt least-squares minimization and curve fitting. To minimize arbitrary user-provided functions, or to fit user-provided data. No need to provide derivatives. With application examples.
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MathematicsLicense
Public DomainFollow lmfit - least squares fitting
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User Reviews
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Everything works fine. Through zero functionality can be achieved by running the function with a formula that does not contain the constant c. For example: y = ax^2 + bx instead of the full formula y = ax^2 + bx + c. At least it does what I want it to do in my case :)
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Lmfit works good.