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Nonlinear Least Squares Fitting software
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Nonlinear Least Squares Fitting

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Released: August 25, 2012  |  Added: August 25, 2012 | Visits: 633

DMFitter ActiveX control 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...



Platforms: Windows

License: Freeware Size: 368.64 KB Download (46): DMFitter ActiveX control Download

Added: April 08, 2013 | Visits: 414

Least squares fit of a rectangle to a given shape/boundary % Based on - A simple method for fitting of bounding rectangle to closed regions - D. Chaudhuri a , A. Samal b.% fit_rectangle - Function provides a least squares fit to the% given boundary points of an object of unknown shape.%% Inputs - Boundary elements that must be a Nx2 array. (atleast 3...





Platforms: Matlab

License: Shareware Cost: $0.00 USD Size: 10 KB Download (43): Least squares fit of a rectangle to a given shape/boundary Download

Added: February 17, 2010 | Visits: 1.201

Statistics::LineFit Statistics::LineFit module least squares line fit, weighted or unweighted. SYNOPSIS use Statistics::LineFit; $lineFit = Statistics::LineFit->new(); $lineFit->setData (@xValues, @yValues) or die "Invalid data"; ($intercept, $slope) = $lineFit->coefficients(); defined $intercept or die...


Platforms: *nix

License: Freeware Size: 24.58 KB Download (122): Statistics::LineFit Download

Added: July 04, 2010 | Visits: 1.070

Statistics::OLS Statistics::OLS is a Perl module to perform ordinary least squares and associated statistics. SYNOPSIS use Statistics::OLS; my $ls = Statistics::OLS->new(); $ls->setData (@xydataset) or die( $ls->error() ); $ls->setData (@xdataset, @ydataset); $ls->regress(); my ($intercept, $slope)...


Platforms: *nix

License: Freeware Size: 8.19 KB Download (96): Statistics::OLS Download

Nonlinear least square optimization through parameter estimation using the Unscented Kalman Filter The Kalman filter can be interpreted as a feedback approach to minimize the least equare error. It can be applied to solve a nonlinear least square optimization problem. This function provides a way using the unscented Kalman filter to solve nonlinear least square optimization problems. Three...


Platforms: Matlab


Added: April 23, 2010 | Visits: 990

Statistics::GaussHelmert Statistics::GaussHelmert is a general weighted least squares estimation module. SYNOPSIS use Statistics::GaussHelmert; # create an empty model my $estimation = new Statistics::GaussHelmert; # setup the model given observations $y, covariance matrices # $Sigma_yy, an initial guess $b0...


Platforms: *nix

License: Freeware Size: 13.31 KB Download (117): Statistics::GaussHelmert Download

Added: June 26, 2013 | Visits: 440

Weighted Orthogonal Least Squares The function computes parameters a, b, and c of the weighted orthogonal least squares fit of line ax+by+c=0 to a set of 2D points with coordinates given by x and y and weights w.n=100;x=1:n;y=2.5*x + (5+300./x).*randn(1,n);plot(x,y,'.k')hold onw=1:n;[a b c] = wols(x,y,w);plot([0,n],[-c/b,-c/b -...


Platforms: Matlab

License: Shareware Cost: $0.00 USD Size: 20.48 KB Download (43): Weighted Orthogonal Least Squares Download

Added: June 28, 2013 | Visits: 282

Ellipsoid Fitting The code implemented a special case of the ellipsoid fitting technique proposed in the paper Least Squares Ellipsoid Specific Fitting, corresponding to case k= 4. Just put the two files in the same directory and run "testFit4". You can change the noise level to observe the fitting accuracy and...


Platforms: Matlab

License: Shareware Cost: $0.00 USD Size: 10 KB Download (40): Ellipsoid Fitting Download

Released: April 14, 2009  |  Added: June 03, 2009 | Visits: 2.324

NMath Analysis NMath Analysis contains classes for function minimization, root-finding, and linear programming. Product features include classes for minimizing univariate functions using golden section search and Brent's method, minimizing multivariate functions using the downhill simplex method, Powell's...


Platforms: Windows

License: Demo Cost: $395.00 USD Size: 3.43 MB Download (141): NMath Analysis Download

Released: September 04, 2012  |  Added: September 04, 2012 | Visits: 553

DataFit 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...


Platforms: Windows

License: Shareware Cost: $249.00 USD Size: 7.34 MB Download (57): DataFit Download

Released: November 06, 2012  |  Added: November 06, 2012 | Visits: 529

DataFitX 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...


Platforms: Windows

License: Shareware Cost: $549.00 USD Size: 2.24 MB Download (48): DataFitX Download

Added: June 29, 2013 | Visits: 309

Fitting Survival Probability Models This is a MATLAB(R) implementation of the ideas discussed in Lopez-Calva, G. and K. Shea, "Fitting Survival Probability Models," WILMOTT Magazine, issue 45, pp. 16-22.We estimate the parameters of three different survival probability models based on credit default swap (CDS) spreads. The...


Platforms: Matlab

License: Shareware Cost: $0.00 USD Size: 10 KB Download (44): Fitting Survival Probability Models Download

Added: September 09, 2013 | Visits: 545

weighted least-squares + weighted min-max optimization This is a wrapper function to solve optimization problems (using FMINCON) of the form:min w.r.t. X of CostFunc(X) = beta*(W_ls*F(X)) + (1 - beta)*(max(W_mm*F(X)))subject to: A*X


Platforms: Matlab

License: Freeware Size: 10 KB Download (44): weighted least-squares + weighted min-max optimization Download

Added: June 21, 2013 | Visits: 612

Multiple Coherence Function For a system having multiple inputs x and outputs y, the partial coherence is the coherence computed between any individual input and the output when the effect of all other inputs is removed from the output by a linear least squares prediction. This coherence obeys the usual inequality, and will...


Platforms: Matlab

License: Freeware Size: 10 KB Download (42): Multiple Coherence Function Download

Added: April 15, 2013 | Visits: 400

Evaluate Nelson-Siegel function Functions NELSONFUN and NELSONFIT evaluate and fit (with non-linear least-squares) the Nelson-Siegel function, a popular yield-curve approximation device.


Platforms: Matlab

License: Shareware Cost: $0.00 USD Size: 10 KB Download (45): Evaluate Nelson-Siegel function Download

Added: May 06, 2013 | Visits: 422

dose_response Inputs: 1. a 1 dimensional array of drug concentrations 2. the corresponding m x n array of responses Algorithm: generate a set of initial coefficients including the Hill coefficient fit the data to the 4 parameter dose-response curve using nonlinear least squares Output: a matrix of the 4...


Platforms: Matlab

License: Freeware Size: 10 KB Download (39): dose_response Download

Added: May 17, 2013 | Visits: 413

Unimodal regression M-files for unimodality (or monotonically) constrained least squares regression.


Platforms: Matlab

License: Shareware Cost: $0.00 USD Size: 10 KB Download (39): Unimodal regression Download

Added: May 11, 2013 | Visits: 448

dmgps The design matrix of a GPS network is established for any kind of least squares adjustment, namely;-free (trace minimum),-minimum constrained,-over-determined.The user can adapt easily dmgps to the adjustment problem of a GPS network whose baselines are taken as observations. Moreover, it can be...


Platforms: Matlab

License: Freeware Size: 10 KB Download (50): dmgps Download

Added: July 17, 2013 | Visits: 342

regout Among the considerations in the use of analysis of regression, outliers or bad values can seriously disturb the least-squares fit. They falls far from the line implied by the rest of the data. If these points are really outliers, then the estimate of the intercept may be incorrect and the...


Platforms: Matlab

License: Shareware Cost: $0.00 USD Size: 10 KB Download (42): regout Download

Released: May 12, 2006  |  Added: November 29, 2006 | Visits: 6.232

The Unscrambler The Unscrambler® is the complete multivariate analysis and experimental design software, equipped with powerful methods including Principal Component Analysis (PCA), Multivariate Curve Resolution (MCR), Partial Least Squares Regression (PLS-R), 3-Way PLS Regression, K-Means Clustering and SIMCA...


Platforms: Windows

License: Shareware Cost: $0.00 USD Size: 29.31 MB Download (664): The Unscrambler Download

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