Fit a Gaussian to a histogram via ROOT's TH1::Fit. More...

#include <ActsPlugins/Root/RootHistogramFit.hpp>

Classes
struct	Config
	Configuration for `RootHistogramFit`. More...

Public Types
using	Range = std::pair<double, double>
	Fit range [xMin, xMax], closed, selected by bin centre.
using	Result = std::tuple<double, double, double, double>
	Outcome of the fit: (mean, sigma, meanError, sigmaError).

Public Member Functions
	RootHistogramFit (Config config)
	Construct with the given configuration.
const Config &	config () const
	The fit configuration.
std::optional< Result >	operator() (const Acts::Experimental::Histogram1 &hist, std::optional< Range > range=std::nullopt) const
	Fit a Gaussian to a histogram, optionally restricted to a range.

Detailed Description

Fit a Gaussian to a histogram via ROOT's TH1::Fit.

operator()'s signature matches ActsExamples::HistogramFitFunction exactly, so a RootHistogramFit instance can be used directly as one with no adapter.

Constructor & Destructor Documentation

◆ RootHistogramFit()

ActsPlugins::RootHistogramFit::RootHistogramFit ( Config config )

explicit

Construct with the given configuration.

Parameters

config The fit configuration

Member Function Documentation

◆ config()

const Config & ActsPlugins::RootHistogramFit::config ( ) const

The fit configuration.

Returns: The configuration this instance was constructed with

◆ operator()()

std::optional< Result > ActsPlugins::RootHistogramFit::operator()	(	const Acts::Experimental::Histogram1 &	hist,
		std::optional< Range >	range = std::nullopt ) const

Fit a Gaussian to a histogram, optionally restricted to a range.