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Curve Fitting Free Downloads

NLREG performs nonlinear regression NLREG 6.2 NLREG performs nonlinear regression and curve fitting. NLREG fits a mathematical function whose form you specify to a set of data values. Virtually any type of function can be fitted. NLREG includes a programming language similar to C that you use for describing the function to be fitted. Two dimensional line and three dimensional surface plots can be generated.

I bought it. Sort of says it all ...

Fit w/ Lorentz, Sine, Power, + Exp. Series CurvFit 5.12.4 CurvFit (tm) is a curve fitting program 4 Windows. Lorentzian, Sine, Exponential & Power series are available models to match your data. A Lorentzian series is highly recommended for real data especially for multiple peaked/valleys data. CurvFit is another improved productivity example do to using Calculus (level) programming ... ie. minutes to solve, days or years to understand solution & what it implies (e.g. wrong model OR sampling rate error)

We were trying to fit a curve of an realtime test (of time duration 0.75 seconds) done by us in which the data generated had inherent noise, presumably 50 Hz. AC noise.With the curve fit program also we were not able to eliminate the unnecessary noise. We arre sending you a copy of the data generated for your information, maybe you could tell us how to achieve the desired results.The filesa re being send by us in a seaprate mail to Mr. David Morris.

Nonlinear regression analysis - CurveFitter Regression Analysis - CurveFitter 4.5.8 CurveFitter program performs statistical regression analysis to estimate the values of parameters for linear, multivariate, polynomial, exponential and nonlinear functions. The regression analysis determines the values of the parameters that cause the function to best fit the observed data that you provide. This process is also called curve fitting.

Works great. Quickly fit an accurate equation in 4 variables for me.

Review of curve fit. Excellent software. Can be improved by introducing more functions.

Not appropriate for my needs I needed a piecewise quintic or cubic regression and this is not supported (at least easily)

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