adding a MINUIT <-> MINUIT2 fit compare
This commit is contained in:
parent
8c0d983b2f
commit
258a0ce336
63083
src/tests/fitCompare/09042.dat
Normal file
63083
src/tests/fitCompare/09042.dat
Normal file
File diff suppressed because it is too large
Load Diff
59
src/tests/fitCompare/09042.msr
Normal file
59
src/tests/fitCompare/09042.msr
Normal file
@ -0,0 +1,59 @@
|
||||
09042 - test
|
||||
###############################################################
|
||||
FITPARAMETER
|
||||
# No Name Value Step Pos_Error Boundaries
|
||||
1 AsymT 0.2089 -0.0033 0.0033 0 0.33
|
||||
2 Field 200.027 -0.092 0.091
|
||||
3 RateT 0.0913 -0.0076 0.0077 0 none
|
||||
4 N0 255.90 -0.40 0.40
|
||||
5 PhaseL 3.73 -0.90 0.91
|
||||
6 BkgL 5.028 -0.042 0.042
|
||||
|
||||
###############################################################
|
||||
THEORY
|
||||
asymmetry 1
|
||||
simplExpo 3 (rate)
|
||||
TFieldCos 5 fun1 (phase frequency)
|
||||
|
||||
###############################################################
|
||||
FUNCTIONS
|
||||
fun1 = par2 * gamma_mu
|
||||
|
||||
###############################################################
|
||||
RUN 09042 MUE4 PSI MUSR-ROOT (name beamline institute data-file-format)
|
||||
fittype 0 (single histogram fit)
|
||||
norm 4
|
||||
backgr.fit 6
|
||||
lifetimecorrection
|
||||
map 0 0 0 0 0 0 0 0 0 0
|
||||
forward 1
|
||||
data 3519 63000
|
||||
t0 3519.0
|
||||
fit 0 12
|
||||
packing 50
|
||||
|
||||
###############################################################
|
||||
COMMANDS
|
||||
STRATEGY 2
|
||||
MINIMIZE
|
||||
MINOS
|
||||
SAVE
|
||||
|
||||
###############################################################
|
||||
FOURIER
|
||||
units Gauss # units either 'Gauss', 'MHz', or 'Mc/s'
|
||||
#fourier_power 10
|
||||
apodization STRONG # NONE, WEAK, MEDIUM, STRONG
|
||||
plot REAL # REAL, IMAG, REAL_AND_IMAG, POWER, PHASE
|
||||
dc-corrected true
|
||||
phase par6
|
||||
|
||||
###############################################################
|
||||
PLOT 0 (single histo plot)
|
||||
runs 1
|
||||
range 0 10 -0.25 0.25
|
||||
#view_packing 50
|
||||
|
||||
###############################################################
|
||||
STATISTIC --- 2013-11-06 09:49:19
|
||||
chisq = 1114.7, NDF = 1183, chisq/NDF = 0.942283
|
||||
BIN
src/tests/fitCompare/09042.root
Normal file
BIN
src/tests/fitCompare/09042.root
Normal file
Binary file not shown.
140
src/tests/fitCompare/fitTest.C
Normal file
140
src/tests/fitCompare/fitTest.C
Normal file
@ -0,0 +1,140 @@
|
||||
/*******************************************************************
|
||||
fitTest.C
|
||||
|
||||
author: Andreas Suter
|
||||
e-mail: andreas.suter@psi.ch
|
||||
|
||||
$Id$
|
||||
********************************************************************/
|
||||
|
||||
#include <iostream>
|
||||
|
||||
#include <TF1.h>
|
||||
#include <TH1.h>
|
||||
#include <TVirtualFitter.h>
|
||||
#include <TCanvas.h>
|
||||
#include <TMath.h>
|
||||
|
||||
const double gGammaMu = TMath::TwoPi()*0.01355;
|
||||
const double gTauMu = 2.19705; // in (us)
|
||||
|
||||
TF1 *gFitFcn;
|
||||
|
||||
//------------------------------------------------------------------
|
||||
/**
|
||||
* <p>Background (flat for the moment)
|
||||
*
|
||||
* \param x
|
||||
* \param par par[0] is the background
|
||||
*/
|
||||
Double_t Background(Double_t *x, Double_t *par)
|
||||
{
|
||||
return par[0];
|
||||
}
|
||||
|
||||
//------------------------------------------------------------------
|
||||
/**
|
||||
* <p>Asymmetry
|
||||
*
|
||||
* \param x
|
||||
* \param par par[0] = asymmetry
|
||||
* par[1] = lambda
|
||||
* par[2] = B
|
||||
* par[3] = phase
|
||||
*/
|
||||
Double_t Asymmetry(Double_t *x, Double_t *par)
|
||||
{
|
||||
return par[0]*TMath::Exp(-par[1]*x[0])*TMath::Cos(gGammaMu*par[2]*x[0]+par[3]/180.0*TMath::Pi());
|
||||
}
|
||||
|
||||
//------------------------------------------------------------------
|
||||
/**
|
||||
* <p>Spectrum
|
||||
*
|
||||
* \param x
|
||||
* \param par
|
||||
*/
|
||||
Double_t Spectrum(Double_t *x, Double_t *par)
|
||||
{
|
||||
return par[0]*TMath::Exp(-x[0]/gTauMu)*(1.0 + Asymmetry(x,&par[1])) + Background(x,&par[5]);
|
||||
}
|
||||
|
||||
//------------------------------------------------------------------
|
||||
/**
|
||||
* <p>fitTest
|
||||
*
|
||||
*/
|
||||
void fitTest(const char *fln, const char *fitter)
|
||||
{
|
||||
TH1::AddDirectory(kFALSE);
|
||||
TCanvas *c1 = new TCanvas("c1","Fitting Test",10,10,500,500);
|
||||
|
||||
// create a TF1 with the range from 0.0 to 12.0 and 6 parameters
|
||||
gFitFcn = new TF1("gFitFcn", Spectrum, 0.0, 12.0, 6);
|
||||
gFitFcn->SetNpx(63082);
|
||||
|
||||
// set parameters
|
||||
gFitFcn->SetParNames("N0", "asym", "lambda", "B", "phase", "Bkg");
|
||||
gFitFcn->SetParameter(0, 30.0); // N0
|
||||
// gFitFcn->SetParLimits(0, 0.0, 1.0e6);
|
||||
gFitFcn->SetParameter(1, 0.26); // asym
|
||||
// gFitFcn->SetParLimits(1, 0.0, 0.33);
|
||||
gFitFcn->SetParameter(2, 0.3); // lambda
|
||||
// gFitFcn->SetParLimits(2, 0.0, 100.0);
|
||||
gFitFcn->SetParameter(3, 100.0); // B
|
||||
// gFitFcn->SetParLimits(3, 0.0, 1000.0);
|
||||
gFitFcn->SetParameter(4, 0.0); // phase
|
||||
// gFitFcn->SetParLimits(4, -90.0, 90.0);
|
||||
gFitFcn->SetParameter(5, 5.0); // Bkg
|
||||
// gFitFcn->SetParLimits(5, 0.0, 1000.0);
|
||||
|
||||
cout << endl << "gFitFcn->Integral(0.0, 12.0) = " << gFitFcn->Integral(0.0, 12.0);
|
||||
cout << endl;
|
||||
|
||||
// read data
|
||||
ifstream ifs(fln, ifstream::in);
|
||||
char line[256];
|
||||
TObjArray *tok;
|
||||
TObjString *ostr;
|
||||
TString str;
|
||||
Int_t lineNo = 0;
|
||||
Double_t dval;
|
||||
Double_t data[63082];
|
||||
while (ifs.good()) {
|
||||
ifs.getline(line, 256);
|
||||
if (line[0]=='%') continue;
|
||||
str = line;
|
||||
if (str.Length() == 0) break;
|
||||
tok = str.Tokenize("\t");
|
||||
ostr = (TObjString*)tok->At(1);
|
||||
str = ostr->GetString();
|
||||
dval = str.Atof();
|
||||
data[lineNo++] = dval;
|
||||
if (tok) delete tok;
|
||||
}
|
||||
ifs.close();
|
||||
|
||||
// fill histo
|
||||
TH1F *histo = new TH1F("histo","Minuit Test",63083,-0.00009765625,12.32080078125);
|
||||
for (Int_t i=1; i<63083; i++)
|
||||
histo->SetBinContent(i,data[i]);
|
||||
|
||||
histo->Rebin(50);
|
||||
histo->Draw();
|
||||
|
||||
gFitFcn->SetParameter(0, 10000.0); // N0
|
||||
gFitFcn->SetParameter(1, 0.2); // asym
|
||||
gFitFcn->SetParameter(2, 0.11); // lambda
|
||||
gFitFcn->SetParameter(3, 200.0); // B
|
||||
gFitFcn->SetParameter(4, 6.0); // phase
|
||||
gFitFcn->SetParameter(5, 300.0); // Bkg
|
||||
|
||||
ROOT::Math::MinimizerOptions::SetDefaultStrategy(2);
|
||||
// ROOT::Math::MinimizerOptions::SetDefaultPrintLevel(1);
|
||||
if (!strcmp(fitter, "Minuit2"))
|
||||
TVirtualFitter::SetDefaultFitter("Minuit2");
|
||||
else
|
||||
TVirtualFitter::SetDefaultFitter("Minuit");
|
||||
histo->Fit("gFitFcn", ""); // L->likleyhood, E->minos
|
||||
histo->Fit("gFitFcn", "ME"); // L->likleyhood, E->minos
|
||||
}
|
||||
@ -78,17 +78,17 @@ void minuit2test()
|
||||
// set parameters
|
||||
gFitFcn->SetParNames("N0", "asym", "lambda", "B", "phase", "Bkg");
|
||||
gFitFcn->SetParameter(0, 30.0); // N0
|
||||
gFitFcn->SetParLimits(0, 0.0, 1.0e6);
|
||||
// gFitFcn->SetParLimits(0, 0.0, 1.0e6);
|
||||
gFitFcn->SetParameter(1, 0.26); // asym
|
||||
gFitFcn->SetParLimits(1, 0.0, 0.33);
|
||||
// gFitFcn->SetParLimits(1, 0.0, 0.33);
|
||||
gFitFcn->SetParameter(2, 0.3); // lambda
|
||||
gFitFcn->SetParLimits(2, 0.0, 100.0);
|
||||
// gFitFcn->SetParLimits(2, 0.0, 100.0);
|
||||
gFitFcn->SetParameter(3, 100.0); // B
|
||||
gFitFcn->SetParLimits(3, 0.0, 1000.0);
|
||||
// gFitFcn->SetParLimits(3, 0.0, 1000.0);
|
||||
gFitFcn->SetParameter(4, 0.0); // phase
|
||||
gFitFcn->SetParLimits(4, -90.0, 90.0);
|
||||
// gFitFcn->SetParLimits(4, -90.0, 90.0);
|
||||
gFitFcn->SetParameter(5, 5.0); // Bkg
|
||||
gFitFcn->SetParLimits(5, 0.0, 1000.0);
|
||||
// gFitFcn->SetParLimits(5, 0.0, 1000.0);
|
||||
|
||||
cout << endl << "gFitFcn->Integral(0.0, 12.0) = " << gFitFcn->Integral(0.0, 12.0);
|
||||
cout << endl;
|
||||
@ -103,10 +103,11 @@ void minuit2test()
|
||||
gFitFcn->SetParameter(0, 1000.0); // N0
|
||||
gFitFcn->SetParameter(1, 0.1); // asym
|
||||
gFitFcn->SetParameter(2, 1.0); // lambda
|
||||
gFitFcn->SetParameter(3, 50.0); // B
|
||||
gFitFcn->SetParameter(3, 100.0); // B
|
||||
gFitFcn->SetParameter(4, 0.0); // phase
|
||||
gFitFcn->SetParameter(5, 300.0); // Bkg
|
||||
|
||||
TVirtualFitter::SetDefaultFitter("Minuit2");
|
||||
histo->Fit("gFitFcn", ""); // L->likleyhood, E->minos
|
||||
histo->Fit("gFitFcn", "ME"); // L->likleyhood, E->minos
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user