OpenMS  2.7.0
Classes | Public Member Functions | Static Public Member Functions | Protected Attributes | Private Member Functions | List of all members
GaussFitter Class Reference

Implements a fitter for Gaussian functions. More...

#include <OpenMS/MATH/STATISTICS/GaussFitter.h>

Collaboration diagram for GaussFitter:
[legend]

Classes

struct  GaussFitResult
 struct of parameters of a Gaussian distribution More...
 

Public Member Functions

 GaussFitter ()
 Constructor. More...
 
virtual ~GaussFitter ()
 Destructor. More...
 
void setInitialParameters (const GaussFitResult &result)
 sets the initial parameters used by the fit method as initial guess for the Gaussian More...
 
GaussFitResult fit (std::vector< DPosition< 2 > > &points) const
 Fits a Gaussian distribution to the given data points. More...
 

Static Public Member Functions

static std::vector< double > eval (const std::vector< double > &evaluation_points, const GaussFitResult &model)
 Evaluate the current Gaussian model at the specified points. More...
 

Protected Attributes

GaussFitResult init_param_
 

Private Member Functions

 GaussFitter (const GaussFitter &rhs)
 Copy constructor (not implemented) More...
 
GaussFitteroperator= (const GaussFitter &rhs)
 Assignment operator (not implemented) More...
 

Detailed Description

Implements a fitter for Gaussian functions.

This class fits a Gaussian distribution to a number of data points. The results as well as the initial guess are specified using the struct GaussFitResult.

The complete Gaussian formula with the fitted parameters can be transformed into a gnuplot formula using getGnuplotFormula after fitting.

Constructor & Destructor Documentation

◆ GaussFitter() [1/2]

Constructor.

◆ ~GaussFitter()

virtual ~GaussFitter ( )
virtual

Destructor.

◆ GaussFitter() [2/2]

GaussFitter ( const GaussFitter rhs)
private

Copy constructor (not implemented)

Member Function Documentation

◆ eval()

static std::vector<double> eval ( const std::vector< double > &  evaluation_points,
const GaussFitResult model 
)
static

Evaluate the current Gaussian model at the specified points.

Returns the intensities (i.e. probabilities scaled by the factor 'A') of the PDF at the given positions. This function can be called with any set of parameters, e.g. the initial parameters (to get a 'before-fit' status), or after fitting.

◆ fit()

GaussFitResult fit ( std::vector< DPosition< 2 > > &  points) const

Fits a Gaussian distribution to the given data points.

Parameters
pointsthe data points used for the Gaussian fitting
Exceptions
Exception::UnableToFitis thrown if fitting cannot be performed

◆ operator=()

GaussFitter& operator= ( const GaussFitter rhs)
private

Assignment operator (not implemented)

◆ setInitialParameters()

void setInitialParameters ( const GaussFitResult result)

sets the initial parameters used by the fit method as initial guess for the Gaussian

Member Data Documentation

◆ init_param_

GaussFitResult init_param_
protected