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XYSampleData throws Runtime exception error if central fit's chi2PerDof exceeds user-set/default bounds for chi2PerDof. This can be used to skip fits with bad fitranges.

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This commit is contained in:
AndrewYongZhenNing 2021-08-25 15:59:00 +01:00
parent 6990d16ca0
commit f0739047c3
2 changed files with 7 additions and 16 deletions
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19
lib/Statistics/XYSampleData.cpp
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@ -20,6 +20,7 @@
#include <LatAnalyze/Statistics/XYSampleData.hpp>
#include <LatAnalyze/includes.hpp>
#include <LatAnalyze/Core/Math.hpp>
// #include <LatAnalyze/Core/Exceptions.hpp>
using namespace std;
using namespace Latan;
@ -234,22 +235,18 @@ DVec XYSampleData::getYError(const Index j)
return data_.getYError(j);
}
void XYSampleData::setChi2PerDofBound(double upper_lim, double lower_lim)
void XYSampleData::setChi2PerDofBound(double uLim, double lLim)
{
chi2PerDofu_ = upper_lim;
chi2PerDofl_ = lower_lim;
}
bool XYSampleData::checkFit()
{
return goodFit_;
chi2PerDofu_ = uLim;
chi2PerDofl_ = lLim;
}
void XYSampleData::checkChi2PerDof(double Chi2PerDof)
{
if(Chi2PerDof >= chi2PerDofu_ or Chi2PerDof < chi2PerDofl_ or isnan(Chi2PerDof))
{
goodFit_ = false;
string msg = "central chi2perDof = " + to_string(Chi2PerDof) + " not within user-set bound of " + to_string(chi2PerDofl_) + " < chi2PerDof < " + to_string(chi2PerDofu_) ;
LATAN_ERROR(Runtime, msg);
}
}
@ -312,11 +309,8 @@ SampleFitResult XYSampleData::fit(std::vector<Minimizer *> &minimizer,
result.chi2_.resize(nSample_);
result.model_.resize(v.size());
double chi2PerDof;
goodFit_ = true;
FOR_STAT_ARRAY(result, s)
{
if(goodFit_)
{
setDataToSample(s);
if (s == central)
{
@ -337,7 +331,6 @@ SampleFitResult XYSampleData::fit(std::vector<Minimizer *> &minimizer,
result.model_[j].resize(nSample_);
result.model_[j][s] = sampleResult.getModel(j);
}
}
}
result.nPar_ = sampleResult.getNPar();
result.nDof_ = sampleResult.nDof_;

4
lib/Statistics/XYSampleData.hpp
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@ -92,8 +92,7 @@ public:
DVec getXError(const Index i);
DVec getYError(const Index j);
// fit criteria
void setChi2PerDofBound(double upper_lim, double lower_lim);
bool checkFit(); // check fit candidate based on chi2PerDof
void setChi2PerDofBound(double uLim, double lLim);
void checkChi2PerDof(double Chi2PerDof);
// get total fit variance matrix and its pseudo-inverse
const DMat & getFitVarMat(void);
@ -137,7 +136,6 @@ private:
Index nSample_, dataSample_{central};
bool initData_{true}, computeVarMat_{true};
bool initXMap_{true};
bool goodFit_{true}; // used to break minimisation if central sample chi2PerDof is bad
double chi2PerDofu_{1e10}, chi2PerDofl_{0};
};