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Tidal Analysis Program in PYthon (TAPPY) uses the least squares optimization function from scipy to perform a harmonic analysis (calculate amplitude and phases of a set of sine waves) of a hourly time series of water level values.

Lmfit provides a high-level interface to non-linear optimization and curve fitting problems for Python. Lmfit builds on Levenberg-Marquardt algorithm of scipy.optimize.leastsq(), but also supports most of the optimization methods from scipy.optimize. Features: - Using Parameter objects instead ... [More] of plain floats as variables. A Parameter has a value that can be varied in the fit, fixed, have upper and/or lower bounds. It can even have a value that is constrained by an algebraic expression of other Parameter values. - Ease of changing fitting algorithms. - Improved estimation of confidence intervals. - Improved curve-fitting with the Model class, which allows to turn a function into a model to fit the data. - Many pre-built models for common lineshapes are included and ready to use. [Less]