org.apache.commons.math3.optimization.fitting
Class GaussianFitter

java.lang.Object
  extended by org.apache.commons.math3.optimization.fitting.CurveFitter<Gaussian.Parametric>
      extended by org.apache.commons.math3.optimization.fitting.GaussianFitter

Deprecated. As of 3.1 (to be removed in 4.0).

@Deprecated
public class GaussianFitter
extends CurveFitter<Gaussian.Parametric>

Fits points to a Gaussian function.

Usage example:

   GaussianFitter fitter = new GaussianFitter(
     new LevenbergMarquardtOptimizer());
   fitter.addObservedPoint(4.0254623,  531026.0);
   fitter.addObservedPoint(4.03128248, 984167.0);
   fitter.addObservedPoint(4.03839603, 1887233.0);
   fitter.addObservedPoint(4.04421621, 2687152.0);
   fitter.addObservedPoint(4.05132976, 3461228.0);
   fitter.addObservedPoint(4.05326982, 3580526.0);
   fitter.addObservedPoint(4.05779662, 3439750.0);
   fitter.addObservedPoint(4.0636168,  2877648.0);
   fitter.addObservedPoint(4.06943698, 2175960.0);
   fitter.addObservedPoint(4.07525716, 1447024.0);
   fitter.addObservedPoint(4.08237071, 717104.0);
   fitter.addObservedPoint(4.08366408, 620014.0);
   double[] parameters = fitter.fit();
 

Since:
2.2
Version:
$Id: GaussianFitter.java 1422230 2012-12-15 12:11:13Z erans $

Nested Class Summary
static class GaussianFitter.ParameterGuesser
          Deprecated. Guesses the parameters norm, mean, and sigma of a Gaussian.Parametric based on the specified observed points.
 
Constructor Summary
GaussianFitter(DifferentiableMultivariateVectorOptimizer optimizer)
          Deprecated. Constructs an instance using the specified optimizer.
 
Method Summary
 double[] fit()
          Deprecated. Fits a Gaussian function to the observed points.
 double[] fit(double[] initialGuess)
          Deprecated. Fits a Gaussian function to the observed points.
 
Methods inherited from class org.apache.commons.math3.optimization.fitting.CurveFitter
addObservedPoint, addObservedPoint, addObservedPoint, clearObservations, fit, fit, getObservations
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

GaussianFitter

public GaussianFitter(DifferentiableMultivariateVectorOptimizer optimizer)
Deprecated. 
Constructs an instance using the specified optimizer.

Parameters:
optimizer - Optimizer to use for the fitting.
Method Detail

fit

public double[] fit(double[] initialGuess)
Deprecated. 
Fits a Gaussian function to the observed points.

Parameters:
initialGuess - First guess values in the following order:
  • Norm
  • Mean
  • Sigma
Returns:
the parameters of the Gaussian function that best fits the observed points (in the same order as above).
Since:
3.0

fit

public double[] fit()
Deprecated. 
Fits a Gaussian function to the observed points.

Returns:
the parameters of the Gaussian function that best fits the observed points (in the same order as above).


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