Curve Fitting Free Download

Visual Fitting

Use Visual Fitting to implement linear, nonlinear curve fitting and surface fitting. Visual Fitting is licensed as shareware and placed in education mathematics section.

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Advanced Grapher

Graphing, curve fitting and calculating software. Graphs Cartesian, polar and parametric functions, graphs of tables, implicit functions and inequalities. Calculus features: regression analysis, derivatives, tangents, normals and more. This shareware is archived under math software category.

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CurvFit

A curve fitting program 4 Windows. Various types of algorithms are supported: 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/valleys data. CurvFit is an example of Calculus programming... ie. minutes to solve, days or years to understand solution and what it implies (e.g. wrong model, sampling rate error). See comments in the files that come with the software.

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DMFitter ActiveX control

This development tool allows you to add sophisticated regression analysis tools to your software in a few lines of code. Features include: both linear and nonlinear (Levenberg-Marquardt) least squares curve fitting algorithms, arbitrary user models (defined analytically or by string expressions), event support, weighting. Examples for Excel, VB, Delphi, MSIE, Data Master 2003 and scripting languages are included.

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FindGraph

Software that is comprehensive, feature-rich graph editor, as well as a curve fitting and digitizing tool for engineers, scientists and graduate students. Convert plots back to X,Y data from any published report for later processing and manipulations. The program offers 10 generic fits, including Linear Regression, Logistic Functions, Fourier approximation, Neural Networks, plus a library of over 120 industry-specific formulas. FindGraph is licensed as shareware and placed in mathematics, science, cad, graphics section.

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Visual Stats

Implement data analysis and multivariate statistical analysis. 1. Probability analysis. 2. Compute descriptive statistics of selected data. 3. Frequency analysis. 4. Compare means and variances. 5. Variance analysis. 6. Univariate linear regression and multivariate linear regression. 7. Linear curve fitting and nonlinear curve fitting. 8. Excel-like data editor is easy to use.

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Regression analysis - CurveFitter

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. This shareware is archived under education mathematics category.

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Vector Eye Basic

Vector Eye is a great raster to vector converter that exports to SVG, Ps and Eps. It recognizes all major raster formats (BMP, JPEG, PNG, TIFF) .Compatible with Adobe, Corel, Jasc, Macromedia, Microsoft and all Svg, Eps, Ps editors. Vector Eye Basic is licensed as shareware and placed in converter, multimedia and image editors, multimedia, design illustration, image and graphic, multimedia - conversion, convertors, graphics section.

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NLREG

This business software 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 is licensed as demo and placed in education mathematics, education science section.

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TriLookup Mac

Excel add-in with eleven powerful worksheet functions for 1, 2 and 3 variable lookup and interpolation (closest-value, linear, piecewise parabolic or hyperbolic, cubic spline) and polynomial curve fitting. Includes online help and example workbooks. TriLookup Mac is licensed as shareware and placed in spreadsheets, excel add-ins, math tools, section.

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DataFit

This office software is a tool for performing 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. This commercial is archived under math, science, engineering, statistics category.

Market System Analyzer

Market Trading Software. Apply advanced money management strategies to increase trading returns and limit risk. Position sizing methods, dependency rules, equity crossover trading, significance testing, and more. Market System Analyzer is a shareware software filed under business investment tools utilities.

vCalc

This software is a keyboard driven scientific calcualtor, that works using the RPN notation common in well known scientific calculators. It supports a complete set of math, binary and statistical operations. Miscellaneous shareware vCalc is listed in browsing, searching, imaging tools.

CalcSupreme

RPN calculator emulation and much more, it includes extensive basic, financial, math/science/engineering, and logic operations, accessible via 4 different screens. These range thru basic arithmetic; loan/savings and other finance; algebra, trig, analytic geometry, calculus, plotting; Boolean arithmetic in 3 number systems. Program uses multiple PC hardware/software resources and can expand indefinitely via add-on dynamic link libraries (DLLs). CalcSupreme is a shareware software filed under calculator, math, science, engineering, business, finance, logic utilities.

InterReg

Interpolation and Regression are fundamental and important calculations in mathematics. Mr. Newton and Mr. Gauss were engaged in-depth with numerical solutions for these problems. Today, there are improved algorithms, that can solve such tasks. InterReg allows you to do such complex calculations just with some point-and-click. So this program is not only for mathematics and engineers. Free for students and schools. InterReg is licensed as shareware and placed in education mathematics section.

OptiVec for Delphi 6

This development tool: Assembler-written library of vector and matrix functions, 2-3 times faster than compiled source code: Math, statistics, analysis, FFT, matrix inversion, decomposition, curve-fitting - in total more than 3500 functions. Development Tools shareware OptiVec for Delphi 6 is listed in development components, libraries tools.

OptiVec for Borland C++

Brings the power of vectorized programming to the PC. Replacing loops over data arrays by the hand-optimized, Assembler-written vector and matrix functions of OptiVec can speed up program execution by 2-3 times and enhances accuracy and safety. More than 3500 functions for math, statistics, analysis, signal processing, matrix operations, curve fitting, etc. For Borland C++4.0+ or BC++Builder.

LAB Fit Curve Fitting Software

The LAB Fit is a software for Windows developed for treatment and analysis of experimental data. At LABFit you are able to: 1) Treat similar data; 2) Treat non-similar data; 3) Determine propagated error; 4) Plot 2D and 3D graphs; 5) Execute math calculations (system of equations, roots of function, etc); 6) Curve Fit (almost 500 functions at the library, with 1 and 2 independent variables, functions finder, rejection of data).

LeoStatistic

Statistical analysis of experimental data. An automatically selection of applicable presentation for given combination of numbers of arguments and values with flexibility in choosing suitable interface to fit data with diverse of formulas. LeoStatistic is licensed as commercial and placed in statistic, education section.

DataFitX

This development tool is a COM component (in-process ActiveX DLL) which allows you to add a powerful nonlinear regression (curve fitting) engine to your software with just a few simple lines of code. Since DataFitX is developed using COM technology, it can be used in any software or development environment that supports COM, including Microsoft Visual Basic, Microsoft Visual C++, Delphi and VBA (Microsoft Excel, Microsoft Access or any VBA enabled client).

OptiVec for Delphi 2006

This software: Assembler-written library of vector and matrix functions, 2-3 times faster than compiled source code: Math, statistics, analysis, FFT, matrix inversion, decomposition, curve-fitting - in total more than 3500 functions.

SimplexNumerica

2D/3D technical graphics plotting and data analysis software for your plotting needs. Curve fitting, FFT and a presentation software! Download a demo of our analysis and plotting software! This shareware is archived under education category.

TriLookup

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. Handles tables with missing data. Fits polynomial curves through a set of X-Y points, returns table of polynomial coefficients and finds the best fit curve. Includes online help and examples for Windows and Mac. TriLookup is licensed as shareware and placed in spreadsheets, excel add-ins, math tools section.

Graphmatica

A powerful, easy-to-use, equation plotter with numerical and calculus features: Graph Cartesian functions, relations, and inequalities, plus polar, parametric, and ordinary differential equations. Displayes up to 999 graphs on screen at once.