Learn the basics of color correction of digital images.

Calculate hydraulic (stage vs. discharge) rating curves for weirs, orifices, etc

Curve fitting and data plotting software.

pH and titration curve calculations tool

Curve Pilot for Mac

WHyRate(Windows Hydraulic Rating Curve) Program

DataFit

BATE pH calculator

$49.95 - Two Pilots

Curve Pilot designed for teaching the basics of color corrections of images created by a digital camera or scanner.

$250.00 - Knowles Engineering Software

Engineers Design stormwater culverts, control structures, ditches

$229.00 - Oakdale Engineering

DataFit 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.

$40.00 - BPP Marcin Borkowski

BATE calculates pH of solutions containing mixtures of acid and base with up to 4 dissociation steps and titration curves for these acids and bases. Ionic strentgh calculations included. Built-in database of common weak acids and bases.

Lissajous 3D
$14.00 - Robert Inventor

Make animated swirly patterns which change shape. You can use real materials such as gold, pearl, ruby. Many demo curves included and you can make new ones to add to the screen saver. Includes wizard, randomiser, and background music. The classical Lissajous curves are traced by a point swinging in two directions at once- Lissajous 3D takes this into three dimensions, You can set the lighting to sunset, sunny day, dawn, dusk etc.

Regression analysis (curve fitting) engine

DMFitter ActiveX control
Free - RRR

DMFitter ActiveX control 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.

Statistical software for biomedical research.

MedCalc Statistical Software
$299.00 - MedCalc Software

MedCalc is a statistical software package for the biomedical sciences with an integrated spreadsheet for easy data input. It can import Excel, SPSS, DBase and Lotus files, and files in SYLK, DIF or text format. Special features of the program are, amongst others, lots of graphs including ROC curves, Kaplan-Meier survival plots, Bland & Altman plot, Deming and Passing & Bablok regression for method comparison.

NLREG
$195.00 - Phillip H. Sherrod

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.

Fit w/ Sine, Power, Exp., + Lorentzian Series

CurvFit
$53.85 - ECB Enterprise

CurvFit (tm) is a curve fitting program 4 Windows 95/98. 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 level 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 EX-*.?

MITCalc - Bevel Gear Calculation
$19.00 - MITCalc

Geometric design and strength check of spur gear with straight, helical and curved toothing. Application is developed in MS Excel, is multi-language and supports Imperial and Metric units. Is based on ANSI/AGMA and ISO/DIN standards and support many 2D and 3D CAD systems (AutoCAD, AutoCAD LT, IntelliCAD, Ashlar Graphite, TurboCAD, Autodesk Inventor, SolidWorks, SolidEdge, Pro/E).

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