Curve Fitting Software
SimplexNumerica 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.
Freeware download of SimplexNumerica 22.214.171.124, size
The Kintecus simulation software has been cited in many peer reviewed journals: J. Phys. Chem.A, PCCP, J. Biol. Chem., Plas. Chem. Plas. Proc., Int. J. Chem. React. Tech, Arch. Bio. Chem. Bio. Phys., THEOCHEM, etc. It is an Industrial Strength/Research Grade chemical modeling, chemical kinetics and equilibrium software for simulation of combustion,
Free download of Kintecus 5.75, size
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
Free download of Regression Analysis - DataFitting 1.7, size
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
Free download of Regression Analysis - CurveFitter 4.5.6, size
"Easy CurveFit" is a very easy tool to fit curve. Only three steps you should do, and you'll get the fitting curve and the needed parameters. The models include linear and nonlinear.Regressions:
1. Linear Fit, y=a+bx;
2. Quadratic Fit, y=a+bx+cx^2;
3. Compound Fit, y=ab^x;
4. Logatithmic Fit, y=a+b*ln(x);
The system solves constrained nonlinear parameter estimation (nonlinear regression, data, curve and surface fitting) problems based on ODEs, DAEs, PDEs, PDAEs, steady-state systems, Laplace equations, and analytical functions.
A statistical analysis provides confidence intervals, correlation and covariance matrix, identification of significant
Free download of EASY-FIT ModelDesign 5.13, size
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)
Freeware download of CurvFit 6.11, size
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
Free download of InterReg 1.3, size
NCSS includes over 230 statistical procedures and plots. NCSS imports and exports all major spreadsheet, database, and statistical file formats. NCSS easily produces sharp, flexible graphics. NCSS output is easily transferred to popular word processors and presentation software such as PowerPoint. NCSS is fully-documented; all help manuals are
Free download of NCSS 7. 1. 2021, size
Fityk is user friendly, open source software for nonlinear curve fitting and data analysis. It is primarily used by scientists to analyze data from experiments (powder diffraction, chromatography, photoluminescence and infrared and Raman spectroscopy), but can be used to fit any analytical functions to any kind of data. The program allows data
Freeware download of Fityk 0.9.8, size
Graphis 2D and 3D visualization software makes the generation of analytical curves effortless. For example, to plot sin(x), simply enter y = sin(x) in the curve definition window. The curve definition need not be a single line. It can consist of multiple lines consisting of constants, variables and expressions defining components of an overall
Free download of Graphis 2. 9. 4400, size
CoPlot is an incredibly versatile program for making publication-quality 2D and 3D scientific graphs (which plot data and equations), maps, and technical drawings. Every aspect of CoPlot has been designed around one basic goal: to make a program that is so versatile that scientists and engineers can easily get exactly what they want.
Free download of CoPlot 6.400, size
Global analysis of multivariate spectrophotometric data to determine underlying reaction mechanisms together with all reaction parameters and intermediate spectra. Compatible measurements include UV-Vis, IR, Raman, NMR, ESR and CD. A compiled Matlab analysis kernel and graphical GUI which is extremely robust and easily maintained. A versatile Excel
Free download of ReactLab EQUILIBRIA 1.0, size
AQUAlibrium is a software package for systems containing water, hydrogen sulfide, carbon dioxide, and light hydrocarbons. It has a well-deserved reputation for being amongst the most accurate software for equilibrium calculations in these systems, especially for acid gas water systems.
-New calculation routines
TriLookup is an add-in for Microsoft® Excel for Windows versions 97, 2000, 2002 (XP), 2003, and 2007 and Excel for Macintosh versions 98, 2001, X and 2008. When installed, TriLookup adds eleven powerful lookup and interpolation worksheet functions to Excel, which offer greatly enhanced functionality compared to Excel's built-in lookup
Free download of Trimill TriLookup 2 21, size
Pilot3D is the lowest priced, full-featured, relational trimmed NURB curve and surface 3D modeling program on the market, with features not found in any other software, at any price. If you want complete shape control over your curves and surfaces, you need this easy-to-use program.
Let Pilot3D be your primary 3D modeling program or
Free download of Pilot3D 1 20, size
FitAll is a general-purpose, nonlinear regression analysis (curve fitting) program that can be used to fit a set of experimental data to any of the defined functions (models). FitAll fits data to continuous, single-valued functions with the general form. Three different regression analysis methods can be used to obtain the best fit.
Free download of FitAll 6 2, size
DataFitX 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. DataFitX is developed using COM, so it can be used in any environment that supports COM, including Microsoft Visual Basic, Microsoft Visual C++, Delphi and VBA
Freeware download of DataFitX 2.0, size
CoStat is an easy-to-use program for data manipulation and statistical analysis. CoStat is included with CoPlot.
- Use a spreadsheet with up to 1.5x10^8 cells (numbers).
CoStat's spreadsheets can contain different types of data (floating point, integer, date, time, degrees, text, etc.).
Free download of CoStat 6.400, size
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
Free download of CurveExpert Basic 1 40, size
Curve Fitting Web Results
Online curve fitting and data plotting software based on Pade (rational) approximants.
Combines basic statistics with nonlinear regression (curve fitting) and publication-quality graphics.
DataFit curve fitting (nonlinear regression) and data plotting software.
Curve fitting and data plotting software. Accuracy of nonlinear regression results verified with NIST.
Combination of basic biostatistics, curve fitting and scientific graphing in one program. Available for Windows or Macintosh.
Mathematical graphing tool for 2D and 3D functions, data, nonlinear curve fitting and integration of coupled ordinary differential equations.
Curve fitting via the COOL algorithm, but with user defined mechanism. Digital simulation (a la Digisim) is used to generate the theoretical curve. Free.