org.apache.commons.math3.fitting

Class GaussianFitter

java.lang.Object

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

org.apache.commons.math3.fitting.GaussianFitter

Deprecated.

As of 3.3. Please use GaussianCurveFitter and WeightedObservedPoints instead.

@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(MultivariateVectorOptimizer optimizer) Deprecated. Constructs an instance using the specified optimizer.

Method Summary

Methods

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.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(MultivariateVectorOptimizer 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).