org.apache.commons.math3.optimization.fitting

Class GaussianFitter

java.lang.Object

org.apache.commons.math3.optimization.fitting.CurveFitter<Gaussian.Parametric>

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

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	GaussianFitter.ParameterGuesser Deprecated. Guesses the parameters norm, mean, and sigma of a Gaussian.Parametric based on the specified observed points.

Constructor Summary

Constructors

Constructor and Description
GaussianFitter(DifferentiableMultivariateVectorOptimizer optimizer) Deprecated. Constructs an instance using the specified optimizer.

Method Summary

Modifier and Type	Method and Description
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

equals, 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).