GooFit::Params Class Reference

#include <Params.h>

Inheritance diagram for GooFit::Params:

Public Member Functions
	Params (PdfBase &pdf)
void	SetGooFitParams (const Minuit2::MnUserParameterState &input)
	Read the values back into GooFit. More...
size_t	size () const
	Get the number of params in the fit. More...
std::vector< double >	make_minuit_vector () const
	Make a parameter array with the current variable values. More...
void	from_minuit_vector (const std::vector< double > &values, bool force_changed=false)
	Set from a minuit vector. Optional force_changed to force complete recalculation. More...
void	set_record (bool do_record=true)
	Set recording of Minuit parameter changes. More...
std::vector< std::vector< double > >	get_recorded () const
	Get recorded values array. More...

Protected Attributes
std::vector< Variable >	vars_
PdfBase *	pdf_
size_t	num_
bool	do_record_ {false}
std::vector< std::vector< double > >	recorded_

Detailed Description

Definition at line 18 of file Params.h.

Constructor & Destructor Documentation

Params()

GooFit::Params::Params

(

PdfBase &

pdf

)

Definition at line 8 of file Params.cpp.

References GooFit::PdfBase::getParameters(), pdf_, and vars_.

    : pdf_(&pdf) {
    vars_ = pdf_->getParameters();

    for(Variable &var : vars_) {
        bool added;
        if(var.IsFixed()) {
            added = Add(var.getName(), var.getValue());
        } else if(var.getLowerLimit() == var.getUpperLimit()) {
            added = Add(var.getName(), var.getValue(), var.getError());
        } else {
            added = Add(var.getName(), var.getValue(), var.getError(), var.getLowerLimit(), var.getUpperLimit());
        }

        if(!added)
            throw std::runtime_error("The name " + var.getName() + " appears more than once!");

        var.setFitterIndex(Index(var.getName()));
    }
}

Member Function Documentation

from_minuit_vector()

void GooFit::Params::from_minuit_vector	(	const std::vector< double > &	values,
		bool	force_changed = false
	)

Set from a minuit vector. Optional force_changed to force complete recalculation.

Definition at line 47 of file Params.cpp.

References GooFit::PdfBase::copyParams(), do_record_, GooFit::max_index(), pdf_, recorded_, and vars_.

Referenced by GooFit::FCN::operator()(), and size().

                                                                                   {
    std::vector<double> gooPars(max_index(vars_) + 1);

    for(Variable &var : vars_) {
        var.setChanged(force_changed ? true : var.getValue() != values.at(var.getFitterIndex()));
        gooPars.at(var.getIndex()) = values.at(var.getFitterIndex()) - var.getBlind(Variable::Key());
    }

    if(do_record_)
        recorded_.push_back(values);

    pdf_->copyParams(gooPars);
}

get_recorded()

std::vector<std::vector<double> > GooFit::Params::get_recorded ( ) const

inline

Get recorded values array.

Definition at line 50 of file Params.h.

References recorded_.

{ return recorded_; }

make_minuit_vector()

std::vector< double > GooFit::Params::make_minuit_vector

(

)

const

Make a parameter array with the current variable values.

Definition at line 39 of file Params.cpp.

References GooFit::max_fitter_index(), and vars_.

Referenced by GooFit::FCN::operator()(), and size().

                                                   {
    std::vector<double> minuitPars(max_fitter_index(vars_) + 1);
    for(const Variable &var : vars_) {
        minuitPars.at(var.getFitterIndex()) = var.getValue();
    }
    return minuitPars;
}

set_record()

void GooFit::Params::set_record ( bool  do_record = true )

inline

Set recording of Minuit parameter changes.

Definition at line 47 of file Params.h.

References do_record_.

{ do_record_ = do_record; }

SetGooFitParams()

void GooFit::Params::SetGooFitParams

(

const Minuit2::MnUserParameterState &

input

)

Read the values back into GooFit.

Definition at line 29 of file Params.cpp.

References vars_.

                                                                     {
    for(Variable &var : vars_) {
        int counter = var.getFitterIndex();
        var.setValue(input.Value(counter));
        var.setError(input.Error(counter));
        SetValue(counter, var.getValue());
        SetError(counter, var.getError());
    }
}

size()

size_t GooFit::Params::size ( ) const

inline

Get the number of params in the fit.

Definition at line 38 of file Params.h.

References from_minuit_vector(), and make_minuit_vector().

{ return vars_.size(); };

Member Data Documentation

do_record_

bool GooFit::Params::do_record_ {false}

protected

Definition at line 26 of file Params.h.

Referenced by from_minuit_vector(), and set_record().

num_

size_t GooFit::Params::num_

protected

Definition at line 24 of file Params.h.

pdf_

PdfBase* GooFit::Params::pdf_

protected

Definition at line 23 of file Params.h.

Referenced by from_minuit_vector(), GooFit::FCN::operator()(), and Params().

recorded_

std::vector<std::vector<double> > GooFit::Params::recorded_

protected

Definition at line 27 of file Params.h.

Referenced by from_minuit_vector(), and get_recorded().

vars_

std::vector<Variable> GooFit::Params::vars_

protected

Definition at line 22 of file Params.h.

Referenced by GooFit::FCN::FCN(), from_minuit_vector(), make_minuit_vector(), Params(), and SetGooFitParams().

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The documentation for this class was generated from the following files:

• /home/travis/build/GooFit/GooFit/include/goofit/fitting/Params.h
• /home/travis/build/GooFit/GooFit/src/goofit/Params.cpp