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Free Nonlinear Regression Downloads



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. You can choose from more than 600 pre-defined equations, which are commonly used in statistical, scientific and engineering applications, or create your own equations. Solved equations are sorted according to goodness-of-fit. DataFit also includes forward selection, backward elimination, stepwise selection and manual variable selection modes to help determine which independent variables should be included in your regression model for multivariate datasets. Results include completely customizable 2D and 3D plots, fitted parameters with confidence intervals, input vs. estimated data and goodness-of-fit information. Plots can be saved as templates, which allows them to be applied to new plots in order to instantly give them your own custom appearance. Data tables, supporting interpolation and extrapolation (projections), can be exported in ASCII, Excel or HTML format. You can also automatically export source code in BASIC or C to utilize any solved equation in a program that you have written. Macro capability allows curve fitting operations to be performed non-graphically, either in batch mode or by calling DataFit from an external program. With the combination of an intuitive interface, online help and wide range of features, it is a tool that is used effectively by both beginners and experts.

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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 (Microsoft Excel, Microsoft Access or any VBA enabled client). A DataCollection object provides methods and procedures for importing and gathering data, as well as providing statistical summaries for the data. The NonlinearRegression and MultipleNonlinearRegression objects provide methods and procedures for defining regression models with up to 100 fitting parameters and performing nonlinear regression on data containing up to 50 independent variables. The CubicSpline object performs cubic spline interpolation on 2-dimensional data. These objects provide properties and methods that return results for the fitting parameters, as well as detailed statistical summaries of the regression results. Arrays of predicted values and residuals are automatically generated, but you can also predict values on a point by point basis (Y at a value of X), or create arrays of predicted values based on data arrays you supply. These objects also include methods to perform derivative and multiple root calculations (X values at a specified value of Y). There are more than 600 pre-defined models, but you can easily define your own by passing a string representation of a model to one of the model creation methods. You can also create event-based regression models, which allows the client code to supply the function evaluations and optionally the derivative calculations through raised events. There are ten objects with 232 methods, procedures and events. You can process the regression results in the client code, or export regression results in DataFit native file format. A DataFitX developer license includes royalty free run-time distribution.

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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.

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Data2Hex V1.02 is a Windows 95/98/ME Program to edit/convert to Intel Hex Files. Features include: Define multiple data start addresses, Pascal / C / character strings, decimal or hexadecimal byte arrays.

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BBSMonitor is a web page watcher which can immediately notify you when the page has been changed. With a user-friendly interface and simplified operations, all you need to do is to add URLs into the list. It's powerful trace technology make it easy to monitor multiple pages simultaneously and continuously. You can find its useful when you issue your messages in a discussion forum and wait for a reply.

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DynaPlot is a real-time chart control for technical and scientific applications. It features dynamic scaling of chart elements with control size, tolerance masks, built-in tools like cursors, markers, scroll, pan, zoom... Although flexible and comprehensive, DynaPlot's programming interface is easy to learn which makes it the tool of choice for both T+M and rapid application development. Examples in VB, VC, VB.NET,C#... help you to get started.

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FS2004/02/00. Complete with a color map to track all your moves in a separate window. Can be used with or without Flight Simulator running. Allows you to use all the planes in your hangar, control the weather and much more. Can also print a simple map to help you. Comes complete with the default FS database with all the airports, VOR, ILS, and airways, but, you can build your own database. Extensive document as well as an SDK in C++/VB.

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As Simple As Photoshop

Video-book for Photoshop users dramatically speeding up your study. Tutorials are illustrated with 243 movie clips (total running time: 6 hours). The book takes you by the hand and shows you around Photoshop, allowing you to combine all possible methods of learning. Read it, watch it, hear to it and follow it.

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View any webcam/WDM video source in a small thumb-sized window above your systray. Specify width/height/position with shortcut (e.g.: "VideoThumb.exe" 320 240 100 300)

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FTP Commander

FTP Commander is simple and easy to use. It's really the bare minimum with no extra frills or thrills. It offers a no-nonsense interface consisting of two side-by-side local computer and FTP server panels. The latter contains a list of about a dozen pre-set FTP servers. It's easy as pie to establish a connection. All you have to do is select the server you want on the list and push the Connect button.

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