# Software Listing: Nonlinear Curve Fitting

**Visual Fitting**- License: Shareware
- Price: 80

Math tool for linear, nonlinear curve fitting and surface fitting. 1. Implement curve fitting and graphing of linear models and nonlinear models. 2. Implement surface fitting and graphing of any binary function models. 3. 4d data fitting and graphing. 4. Polynomial fitting and graphing. 5. Excel-like data editor is easy to use. 6. Ability to move, zoom in, zoom out and rotate the graphs in plot area. 7. Ability to save graphs as bmp file..

**Publisher:**GraphNow**Date:**21-09-2013**Size:**2500 KB

**Platform:**Win2000, Win7 x32, Win7 x64, Windows Server, WinOther, WinVista, WinVista x64

**Visual Fitting Pro**- License: Shareware

Visual Fitting Pro is a comprehensive and reliable software that helps you to easily implement linear and nonlinear curve fitting.

By using Visual Fitting Pro you have the possibility to create 2D curves in order to visualize the fitting models, move, zoom in or zoom out the graphs in plot area, as well as to save graphs as BMP files.

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**Publisher:**GraphNow**Date:**

**Platform:**Windows 7, Windows 8, WinOther, WinVista

**Fityk for Windows**- License: Freeware
- Price: 0.00

Fityk [fi:tik] is a program for data processing and nonlinear curve fitting.

It is primarily used

* by scientists who analyse data from powder diffraction, chromatography, photoluminescence and photoelectron spectroscopy, infrared and Raman spectroscopy, and other experimental techniques,

* to fit peaks bell-shaped functions (Gaussian, Lorentzian, Voigt, Pearson VII, bifurcated Gaussian, EMG, Doniach-Sunjic, etc.),

but any functions can be fitted to any 2D (x,y) data.

More dlT*

Features

* intuitive graphical interface (and also command line interface),

* support for many data file formats, thanks to the xylib library,

* dozens of built-in functions and support for user-defined functions,

* equality constraints,

* modelling error of the x...

**Publisher:**Marcin Wojdyr**Date:****Size:**3205 KB

**Platform:**WinOther

**LAB Fit Curve Fitting Software**- License: Shareware
- Price: 60

LAB Fit is a software for Windows developed for treatment and analysis of experimental data. At LABFit program you are able to: 1) Treat similar data (grouped and ungrouped dataset, one or two samples); 2) Treat non-similar data; 3) Determine propagated error (error propagation up to eight independent variables); 4) Plot 2D and 3D graph (normal, parametric, imported dataset, contour of maps); 5) Execute math calculations (system of linear equations, roots of function, non-linear equation, ordinary differential equation - ODE up to fifth order, system of differential equations - up to five first order ODE, calculator, etc); 6) Extract data (x;y) from a 2D graph (digitizing); 7) Curve Fit (nonlinear regression - least squares method, Levenberg-Marquardt algorithm - with almost 500 functions at the library, with 1 and 2 independent...

**Publisher:**Wilton Pereira da Silva**Date:**22-01-2007**Size:**3398 KB

**Platform:**Unix, Win2000, WinOther

**NLREG**- License: Demo
- Price: 195.00

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. The programming language includes a large selection of built-in library functions (sin, cos, log, exp, etc.) that makes it easy to describe complicated models..

**Publisher:**Phillip H. Sherrod**Date:**25-08-2004**Size:**1191 KB

**Platform:**Win2000, Windows Server, WinOther

**DataFitting**- License: Shareware
- Price: 15.00

DataFitting is a powerful statistical analysis program that performs linear and nonlinear regression analysis (i.e. curve fitting). DataFitting determines the values of parameters for an equation, whose form you specify, that cause the equation to best fit a set of data values. DataFitting can handle linear, polynomial, exponential, and general nonlinear functions. DataFitting performs true nonlinear regression analysis, it does not transform the function into a linear form. As a result, it can handle functions that are impossible to linearize such as: y = (a - c) * exp(-b * x) + c Quickly Find the Best Equations that Describe Your Data: DataFitting gives students, teachers, engineers, researchers and other professionals the power to find the ideal model for even the most complex data, by putting a large number of equations at...

**Publisher:**Institute of Mathematics and Statistics**Date:**11-04-2015**Size:**2990 KB

**Platform:**Win2000, Win7 x32, Win98, WinOther, WinVista, WinXP, Other

**DataFit**- License: Shareware
- Price: 229.00

DataFit is a tool used to perform nonlinear regression (curve fitting), statistical analysis and data plotting. What sets DataFit apart from similar curve fitting and regression programs is its ease of use. DataFit is driven by a well-designed graphical interface, so there are no complicated instructions to remember and no programs to write. Data entry is achieved through a standard spreadsheet interface, which supports ASCII and ODBC data source import, as well as cutting and pasting data from the clipboard. With DataFit, you can perform linear or nonlinear regression on data containing up to 20 independent variables.

**Publisher:**Oakdale Engineering**Date:**23-01-2005**Size:**5777 KB

**Platform:**Win2000, Windows Server, WinOther

**Bacterial growth curve fitting by MONOD Model**- License: Shareware

Non Linear curve fitting by primary model.

**Publisher:**Bachir**Date:**17-01-2013**Size:**10 KB

**Platform:**Matlab, Scripts

**AdvCurveFit**- License: Freeware
- Price: 0.00

This example solves a complex curve fitting problem that involves parameter pooling and stratification using a nonlinear least-squares approach. This example also takes advantage of some new language features with MATLAB 7. * Anonymous functions * Nested functions.

**Publisher:**Robert Bemis**Date:**03-03-2013**Size:**51 KB

**Platform:**Matlab, Scripts

**CurveExpert Basic**- License: Shareware
- Price: 45.00

CurveExpert Basic is a comprehensive curve fitting system for Windows. XY data can be modelled using a toolbox of linear regression models, nonlinear regression models, interpolation, or splines. Over 30 models are built-in, but custom regression models may also be defined by the user. Full-featured graphing capability allows thorough examination of the curve fit. The process of finding the best fit can be automated by letting CurveExpert compare your data to each model to choose the best curve. CurveExpert Basic was designed to be simple but powerful, so that all users can obtain a model for their data quickly and easily.

**Publisher:**Daniel G. Hyams**Date:**03-08-2012**Size:**1126 KB

**Platform:**WinOther

**CurveExpert Professional**- License: Shareware
- Price: 70.00

CurveExpert Professional is a cross-platform solution for curve fitting and data analysis. Data can be modelled using a toolbox of linear regression models, nonlinear regression models, smoothing methods, or various kinds of splines. Over 60 models are built-in, but custom regression models may also be defined by the user. Full-featured publication-quality graphing capability allows thorough examination of the curve fit. The process of finding the best fit can be automated by letting CurveExpert compare your data to each model to choose the best curve. The software is designed with the purpose of generating high quality results and output while saving your time in the process.

**Publisher:**Daniel G. Hyams**Date:**25-05-2012**Size:**21299 KB

**Platform:**WinOther

**Curve Fitting**- License: Freeware
- Price: 0.00

Data is often given for discrete values along a continuum. However, you may require estimates at points between the discrete values. MathPad Curve Fitter describes techniques to fit curves to such data in order to obtain intermediate estimates. In addition, you may require a simplified version of a complicate function. One way to do this is to compute values of the function at a number of discrete values along the range of interest. Then a simpler function may be derived to fit these values. Both of these applications are known as curve fitting.

There are general approaches for curve fitting that are distinguished from each other on the basis of the amount of error associated with the data.

**Publisher:**MathPad Software Corp**Date:****Size:**10 KB

**Platform:**Win2000, Windows 7, WinOther, WinServer, WinVista

**Advanced Grapher**- License: Shareware
- Price: 29.95

Powerful but easy-to-use graphing, curve fitting and calculating software. Graphs Cartesian (Y(x) and X(y)), polar and parametric functions, graphs of tables, equations (implicit functions), inequalities and slope fields. Up to 100 graphs in one window. Calculus features: regression analysis, obtaining zeroes and extrema of functions, intersections, derivatives, equations of tangents and normals, numerical integration, value tables, calculator. Lots of graph and coordinate plane parameters. You will be able to create high-quality graphs and copy them to your documents (as EMF or BMP). This graphing software also has printing capabilities, multi-document interface, customizable toolbars.

**Publisher:**Alentum Software, Inc.**Date:**09-03-2009**Size:**1411 KB

**Platform:**Win2000, Windows Server, Windows Vista, WinOther

**TriLookup Mac**- License: Shareware
- Price: 20.00

Excel add-in with eleven powerful worksheet functions for 1, 2 and 3 variable lookup and interpolation. Interpolation modes include: closest-value, linear, piecewise parabolic or hyperbolic, cubic spline and polynomial up to 20th order. The functions can also handle tables containing missing and invalid data.

Includes functions to fit polynomial curves through a set of X-Y data points and return a table of polynomial curve coefficients, as well as, determine the best fit polynomial curve.

In case of an error, TriLookup functions can either return a standard Excel error code or a detailed text error message, indicating the nature of the error and pointing to the cause of it.

**Publisher:**Trimill Industrial Systems Inc.**Date:**27-10-2011**Size:**777 KB

**Platform:**Mac OS X

**DataScene Professional for Windows**- License: Shareware
- Price: 349.00

DataScene is a scientific graphing, graph animation, data analysis, curve fitting, and data monitoring program. It allows the user to easily plot 2D & 3D graphs (Area, Bar, Pie, Line, Surface, Ploar, and more), to manipulate, print, and export high quality graphs, to analyze data with various mathematical methods (fitting curves, calculating statics, FFT, and more), to create animated graphs for presentations, classes, and web pages, and to chart and process real-time data sources. * Plotting 39 types of graphs with brilliant graph quality. * 3D canvas for most graph types. * A wide variety of highly customizable graphical elements: transparent color, solid brush, gradient brush, image brush, hatch brush with 56 textures, shadow, visual aspect settings, etc.

**Publisher:**CyberWit, Inc.**Date:**23-09-2012**Size:**45128 KB

**Platform:**WinOther

**FindGraph**- License: Shareware
- Price: 99.95

FindGraph is a comprehensive graphing, curve fitting, and digitizing tool. FindGraph offers 12 generic fits, including linear regression, logistic functions, fourier approximation, rationals, neural networks, B-splines and parametric curves least squares approximations, plus a library of over 300 industry-specific 2D formulas. FindGraph uses the Levenberg - Marquardt non-linear algorithm and the Simplex algorithm to fit data. A built-in Wizard helps to apply different curve fits to discover the model that best describes the data. Peak fitting features are included. There is a feature that applies Singular Spectrum Analysis (SSA) to reconstruct and to forecast data series and to extract cyclic sygnals.

**Publisher:**UNIPHIZ Lab**Date:**10-05-2013**Size:**4433 KB

**Platform:**Win2000, Windows Server, Windows Vista, WinOther

**Demo Files for "Data Analysis with Statistics and Curve Fitting Toolboxes" 2007 Webinar**- License: Shareware

The zip file contains the demo shown on August 7, 2007 for the Webinar titled "Data Analysis with Statistics and Curve Fitting Toolboxes". The demo requires Statistics and Curve Fitting Toolboxes. It is recommended that the webinar is viewed prior to running the files contained in this download. The Webinar can be found at http://www.mathworks.com/company/events/ar...d_webinars.html.

**Publisher:**Stuart Kozola**Date:**17-02-2013**Size:**2836 KB

**Platform:**Matlab, Scripts

**KinetDS 3.0 Rev**- License: Freeware
- Price: 0.00

KinetDS is a software for curve fitting particularly designed for kinetic (mechanistic and empirical) description of a substance dissolution from solid state. It was primarily designed for handling pharmaceutical dissolution tests

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**Publisher:**Aleksander Mendyk**Date:****Size:**3174 KB

**Platform:**Win7 x64, Windows 7, WinOther, WinVista, WinVista x64

**CurvFit**- License: Freeware
- Price: 0.00

CurvFit (tm) is a curve fitting program for Windows. Lorentzian, Sine, Exponential and Power series are available models to match your data. A Lorentzian series is highly recommended for real data especially for multiple peaked and/or valleys data. CurvFit is another improved productivity example do to using Calculus (level) programming ... ie. minutes to solve, days or years to understand solution and what it implies (e.g. wrong model, sampling rate error, etc.). Helps learn 1) whether math model is good for given data; 2) convergence implies a reasonable solution; 3) how to select new starting initial parameter values.

**Publisher:**Optimal Designs Enterprise**Date:**24-02-2016**Size:**3769 KB

**Platform:**Win2000, WinXP, Win7 x32, Win7 x64, Windows 8, Windows 10, WinServer, WinOther, WinVista, WinVista x64

**GUI for Generalized Nonlinear Non-analytic Chi-Square Fitting**- License: Freeware
- Price: 0.00

FitChiTool provides an interface similar to the Curve Fitting Toolbox to the fitChiSquare function. This allows you to perform fits using chi-square when measurement errors are known on linear or nonlinear models. It allows allows you to perform fits with multiple independent (more than one x) variables. If measurement errors are unknown, it performs nonlinear least-squares fitting (chi-square equal to 1). To get started with FitChiTool, run the tutorial in the included HTML documentation (or run FitChiToolExample)..

**Publisher:**Nathaniel Brahms**Date:**07-05-2013**Size:**225 KB

**Platform:**Matlab, Scripts