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Least Squares Fit Method freeware
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Least Squares Fit Method

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Added: June 04, 2013 | Visits: 233

variogramfit variogramfit performs a least squares fit of various theoretical variograms to an experimental, isotropic variogram. The user can choose between various bounded (e.g. spherical) and unbounded (e.g. exponential) models. A nugget variance can be modelled as well, but higher nested models are not...



Platforms: Matlab

License: Freeware Size: 20.48 KB Download (20): variogramfit Download

Added: February 17, 2010 | Visits: 876

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 (100): Statistics::LineFit Download

Added: April 23, 2010 | Visits: 775

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 (87): Statistics::GaussHelmert Download

Orthogonal Least Squares Algorithms for Sparse Signal Reconstruction OLS - Orthogonal Least Squares: Proposed by T. Blumensath, M. E. DaviesStOLS - Stagewise OLS: Combining StOMP ideas with OLSROLS - Regularized OLS: Combining ROMP ideas with OLS


Platforms: Matlab


Added: July 04, 2010 | Visits: 752

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 (79): Statistics::OLS Download

Released: November 26, 2012  |  Added: November 26, 2012 | Visits: 284

BestCurFit BestCurFit calculates the parameters of 12 curves using the method of Linear Least Squares, fitting each curve to user data. The nonlinear equations are linearized. The obtained parameters are used for following optimization procedure using Simplex and Gauss-Newton algorithm. If it does not...


Platforms: Windows

License: Freeware Size: 1.81 MB Download (34): BestCurFit Download

Added: September 24, 2010 | Visits: 638

PDL::Fit::Levmar PDL::Fit::Levmar is a Perl module with Levenberg-Marquardt fit/optimization routines. Levenberg-Marquardt routines for least-squares fit to functions non-linear in fit parameters. This module provides a PDL ( PDL::PDL ) interface to the non-linear fitting library levmar (written in C). Levmar...


Platforms: *nix

License: Freeware Size: 122.88 KB Download (82): PDL::Fit::Levmar Download

Added: June 01, 2013 | Visits: 223

zpkfit zpkfit uses the nonlinear least-squares fitter (lsqnonlin) to fit an analytic model of any (fixed) number of poles and zeroes to numerical (presumably measured) frequency response data. It takes as arguments a frequency vector, a frequency response vector, and vectors of the initial guesses of...


Platforms: Matlab

License: Freeware Size: 10 KB Download (20): zpkfit Download

Released: August 25, 2012  |  Added: August 25, 2012 | Visits: 307

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 (28): DMFitter ActiveX control Download

Added: May 06, 2013 | Visits: 311

Savitzky-Golay Smoothing and Differentiation Filter Function: Savitzky-Golay Smoothing and Differentiation Filter The Savitzky-Golay smoothing/differentiation filter (i.e., the polynomial smoothing/differentiation filter, or the least-squares smoothing/differentiation filters) optimally fit a set of data points to polynomials of different degrees....


Platforms: Matlab

License: Freeware Size: 10 KB Download (19): Savitzky-Golay Smoothing and Differentiation Filter Download

Added: June 21, 2013 | Visits: 239

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 (20): Multiple Coherence Function Download

Added: May 20, 2013 | Visits: 229

gapolyfitn This function implements a method of using genetic algorithms to optimise the form of a polynomial, i.e. reducing the number of terms required in comparison to a least-squares fit using all possible terms, as described in the following paper:Clegg, J. et al, "The use of a genetic algorithm to...


Platforms: Matlab

License: Freeware Size: 30.72 KB Download (18): gapolyfitn Download

Added: May 11, 2013 | Visits: 249

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 (26): dmgps Download

Released: August 23, 2012  |  Added: August 23, 2012 | Visits: 315

DynaFit The DynaFit application was developed to perform nonlinear least-squares regression of chemical kinetic, enzyme kinetic, or ligand-receptor binding data. The experimental data can be either initial reaction velocities in dependence on the concentration of varied species (e.g., inhibitor...


Platforms: Windows

License: Freeware Size: 5.8 MB Download (33): DynaFit Download

Released: June 09, 2012  |  Added: June 09, 2012 | Visits: 259

Motofit Motofit co-refines Neutron and X-ray reflectometry data, using the Abeles matrix / Parratt recursion and least squares fitting (Genetic algorithm or Levenberg Marquardt). It works in the IGOR Pro environment (TM Wavemetrics).


Platforms: Windows, Mac, Linux

License: Freeware Size: 8.84 MB Download (28): Motofit Download

Released: June 22, 2012  |  Added: June 22, 2012 | Visits: 212

Sake Sake is a PHP implementation of Polynomial Least Squares Regression. The algorithm takes data points as input and returns the resulting polynomial. Graphs can be made using any plotting package. Sake provides the polynomial and will compute as many point


Platforms: Windows, Mac, Linux

License: Freeware Size: 22.7 KB Download (27): Sake Download

Released: July 12, 2012  |  Added: July 12, 2012 | Visits: 333

Tidal Analysis Program in PYthon Tidal Analysis Program in PYthon (TAPPY) uses the least squares optimization function from scipy to perform a harmonic analysis (calculate amplitude and phases of a set of sine waves) of a hourly time series of water level values.


Platforms: Windows, Mac, Linux

License: Freeware Size: 1.19 MB Download (28): Tidal Analysis Program in PYthon Download

LMFsolve.m: Levenberg-Marquardt-Fletcher algorithm for nonlinear least squares problems The function LMFsolve.m serves for finding optimal solution of an overdetermined system of nonlinear equations in the least-squares sense. The standard Levenberg- Marquardt algorithm was modified by Fletcher and coded in FORTRAN many years ago. LMFsolve is its essentially shortened version...


Platforms: Matlab


Added: May 01, 2013 | Visits: 303

Neuro-fuzzy classifier It is known that there is no sufficient Matlab program about neuro-fuzzy classifiers. Generally, ANFIS is used as classifier. ANFIS is a function approximator program. But, the usage of ANFIS for classifications is unfavorable. For example, there are three classes, and labeled as 1, 2 and 3. The...


Platforms: Matlab

License: Freeware Size: 10 KB Download (23): Neuro-fuzzy classifier Download

Added: September 03, 2013 | Visits: 226

Lomb normalized periodogram Both functions caculate the Lomb normalized periodogram (aka Lomb-Scargle, Gauss-Vanicek or Least-Squares spectrum) of a vector x with coordinates in t, which is essentially a generalization of the DFT for unevenly sampled data.The codes are transcriptions from Fortran of the subroutines found in...


Platforms: Matlab

License: Freeware Size: 10 KB Download (18): Lomb normalized periodogram Download

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