Curve Fitting Software

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.

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.

Visual Fitting

Use Visual Fitting to implement 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. Excel-like data editor is easy to use. 4. Ability to move, zoom in, zoom out and rotate the graphs in plot area. 5. Ability to save graphs as bmp file. Visual Fitting is licensed as shareware and filed in education mathematics section.

Advanced Grapher

Powerful but easy-to-use graphing, curve fitting and calculating software. Graphs Cartesian, polar and parametric functions, graphs of tables, implicit functions, inequalities and slope fields. Up to 100 graphs in one window. Calculus features: regression analysis, intersections, derivatives, tangents, normals and more. The program has printing capabilities, multi-document interface, customizable toolbars. This shareware is listed under math software category.

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. This freeware is listed under activex, mathematics, science category.

FindGraph

This software 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.

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).

vCalc

Software that 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. This shareware is listed under browsing, searching, imaging category.

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. Up to 999 graphs on screen at once. New data plotting and curve-fitting features. Numerically solves and graphically displays tangent lines and integrals.

DataFitX

This software 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).

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 education software is categorized under education mathematics.

LeoStatistic

Data visualization and statistical analysis. 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. Universal input of data: copy/paste, database table, text file. Statistical schemes include probability distribution, curve and surface fit, near neighbor's method. Results can be saved as bitmap and formulas.

SimplexNumerica

Software that is an object-oriented numerical data analyzer, plot and presentation program. SimplexNumerica is proving to be extremely popular among scientists. Ergonomic programming using the newest Windows programming guidelines with toolbars, context dialogs and interactive diagrams providing easy handling with difficult numeric mathematics. SimplexNumerica is best suited for publication type graphics, analysis of arbitrary data.

OptiVec for Delphi 2006

OptiVec 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 speeds up program execution by up to 2-3 times and enhances accuracy and safety. More than 3500 functions for math, statistics, analysis, signal processing, matrix operations, curve fitting, graphics etc. For Borland Delphi 2006.

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).

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.

DataFit

This business software 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.

Vector Eye Basic

Vector Eye is a great raster to vector converter that exports to SVG (Scalable Vector Graphics), Ps and Eps. It recognizes all major raster formats (BMP, JPEG, PNG, TIFF) and makes the web raw materials. Vector based images are the best way to display high quality graphics with the minimum amount of information. Compatible with Adobe, Corel, Jasc, Macromedia, Microsoft and all Svg, Eps, Ps editors.

TriLookup Mac

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.

Market System Analyzer

This office and business application (MSA) is designed to help maximize the performance of trading systems and methods. MSA can uncover tradable profit/loss patterns, optimize trade sizes, and avoid trades that have a low likelihood of success. The result is a higher percentage of winning trades, lower drawdowns, more consistent returns, and greater profitability. For discretionary and systematic stock and futures traders.

NLREG

This office 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 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.

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.

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. This education software is categorized under education mathematics.