NonlinearRegression and MultipleNonlinearRegression objects provide methods and procedures for defining regression models with up to 100 fitting parameters and performing nonlinear regression on data containing up to 50 independent variables. The CubicSpline object performs cubic spline interpolation on 2-dimensional data. These objects provide properties and methods that return results for the fitting parameters, as well as detailed statistical

curve, math, statistics, regression, data, fitting, nonlinear, parameter, science, estimation

nonlinear models for any application. Its state-of-the-art data fitting includes the following capabilities: *Any user-defined equations of up to nine parameters and eight variables. *Linear equations. *Nonlinear exponential, logarithmic and power equations. *A 38-digit precision math emulator for properly fitting high order polynomials and rationals. Graphically Review Curve Fit Results: Once your data have been fit, Curvefitter automatically sorts

curve, curvefitter, function, trigonometric, regression, least squares, parsing, equation, curve fit, fitter, exponential, nonlinear, formula

This tool is used to perform a nonlinear resize (or "warp") of an image. By warping, you can resize an image such that the objects in the center of an image remain clear and undistorted, and distortion occurs near the edges of the image. This tool is useful for situations where you need to convert an image from one aspect ratio to another without cropping.

resize, aspect ratio, warp

Solves boundary-value or initial-value problems involving nonlinear or linear ordinary differential equations of any order, or systems of such. The conditions may also be linear or nonlinear. The solution will be a finite power or trigonometric series. You have one-click control of the graph with zooming, panning, centering, etc. The solution may be studied by the POWER & TRIG SERIES program to find roots, extrema, derivatives, integral, graph.

equations, math, differential equations, mathematics, science, ordinary, differential, engineering

DataFit is a tool used to perform nonlinear regression (curve fitting), statistical analysis & data plotting. Fit equations with up to 100 parameters to data with up to 20 independent variables. Define your own equations or choose from over 600 pre-defined equations. Results include customizable 2D/3D plots, as well as detailed fit information. Export code in BASIC or C to use an equation in a user written program. Easy to learn and use.

curve, math, statistics, regression, plotting, data, fitting, nonlinear, parameter, science, estimation

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.

surface fitting, nonlinear regression, modeling, regression, curve fitting