doc/v626/fitslicesy_8C.html

void fitslicesy() {

// Change some default parameters in the current style

   gStyle->SetLabelSize(0.06,"x");

   gStyle->SetLabelSize(0.06,"y");

   gStyle->SetFrameFillColor(38);

   gStyle->SetTitleW(0.6);

   gStyle->SetTitleH(0.1);


// Connect the input file and get the 2-d histogram in memory

   TString dir = gROOT->GetTutorialDir();

   dir.Append("/hsimple.C");

   dir.ReplaceAll("/./","/");

   if (!gInterpreter->IsLoaded(dir.Data())) gInterpreter->LoadMacro(dir.Data());

   TFile *hsimpleFile = (TFile*)gROOT->ProcessLineFast("hsimple(1)");

   if (!hsimpleFile) return;

   TH2F *hpxpy = (TH2F*)hsimpleFile->Get("hpxpy");


// Create a canvas and divide it

   TCanvas *c1 = new TCanvas("c1","c1",700,500);

   c1->SetFillColor(42);

   c1->Divide(2,1);

   TPad *leftPad = (TPad*)c1->cd(1);;

   leftPad->Divide(1,2);


// Draw 2-d original histogram

   leftPad->cd(1);

   gPad->SetTopMargin(0.12);

   gPad->SetFillColor(33);

   hpxpy->Draw();

   hpxpy->GetXaxis()->SetLabelSize(0.06);

   hpxpy->GetYaxis()->SetLabelSize(0.06);

   hpxpy->SetMarkerColor(kYellow);


// Fit slices projected along Y fron bins in X [7,32] with more than 20 bins  in Y filled

   hpxpy->FitSlicesY(0,7,32,20);


// Show fitted "mean" for each slice

   leftPad->cd(2);

   gPad->SetFillColor(33);

   TH2F *hpxpy_0 = (TH2F*)hsimpleFile->Get("hpxpy_0");

   hpxpy_0->Draw();

   TPad *rightPad = (TPad*)c1->cd(2);

   rightPad->Divide(1,2);

   rightPad->cd(1);

   gPad->SetTopMargin(0.12);

   gPad->SetLeftMargin(0.15);

   gPad->SetFillColor(33);

   TH2F *hpxpy_1 = (TH2F*)hsimpleFile->Get("hpxpy_1");

   hpxpy_1->Draw();


// Show fitted "sigma" for each slice

   rightPad->cd(2);

   gPad->SetTopMargin(0.12);

   gPad->SetLeftMargin(0.15);

   gPad->SetFillColor(33);

   TH2F *hpxpy_2 = (TH2F*)hsimpleFile->Get("hpxpy_2");

   hpxpy_2->SetMinimum(0.8);

   hpxpy_2->Draw();


//attributes

   hpxpy_0->SetLineColor(5);

   hpxpy_1->SetLineColor(5);

   hpxpy_2->SetLineColor(5);

   hpxpy_0->SetMarkerColor(2);

   hpxpy_1->SetMarkerColor(2);

   hpxpy_2->SetMarkerColor(2);

   hpxpy_0->SetMarkerStyle(21);

   hpxpy_1->SetMarkerStyle(21);

   hpxpy_2->SetMarkerStyle(21);

   hpxpy_0->SetMarkerSize(0.6);

   hpxpy_1->SetMarkerSize(0.6);

   hpxpy_2->SetMarkerSize(0.6);

}

kYellow
@ kYellow
Definition Rtypes.h:66

gInterpreter
#define gInterpreter
Definition TInterpreter.h:562

gROOT
#define gROOT
Definition TROOT.h:404

gStyle
R__EXTERN TStyle * gStyle
Definition TStyle.h:413

gPad
#define gPad
Definition TVirtualPad.h:288

TAttAxis::SetLabelSize
virtual void SetLabelSize(Float_t size=0.04)
Set size of axis labels.
Definition TAttAxis.cxx:205

TAttFill::SetFillColor
virtual void SetFillColor(Color_t fcolor)
Set the fill area color.
Definition TAttFill.h:37

TAttLine::SetLineColor
virtual void SetLineColor(Color_t lcolor)
Set the line color.
Definition TAttLine.h:40

TAttMarker::SetMarkerColor
virtual void SetMarkerColor(Color_t mcolor=1)
Set the marker color.
Definition TAttMarker.h:38

TAttMarker::SetMarkerStyle
virtual void SetMarkerStyle(Style_t mstyle=1)
Set the marker style.
Definition TAttMarker.h:40

TAttMarker::SetMarkerSize
virtual void SetMarkerSize(Size_t msize=1)
Set the marker size.
Definition TAttMarker.h:41

TAttPad::SetTopMargin
virtual void SetTopMargin(Float_t topmargin)
Set Pad top margin in fraction of the pad height.
Definition TAttPad.cxx:129

TCanvas
The Canvas class.
Definition TCanvas.h:23

TDirectoryFile::Get
TObject * Get(const char *namecycle) override
Return pointer to object identified by namecycle.
Definition TDirectoryFile.cxx:937

TFile
A ROOT file is a suite of consecutive data records (TKey instances) with a well defined format.
Definition TFile.h:54

TH1::GetXaxis
TAxis * GetXaxis()
Get the behaviour adopted by the object about the statoverflows. See EStatOverflows for more informat...
Definition TH1.h:320

TH1::GetYaxis
TAxis * GetYaxis()
Definition TH1.h:321

TH1::SetMinimum
virtual void SetMinimum(Double_t minimum=-1111)
Definition TH1.h:399

TH1::Draw
virtual void Draw(Option_t *option="")
Draw this histogram with options.
Definition TH1.cxx:3074

TH2F
2-D histogram with a float per channel (see TH1 documentation)}
Definition TH2.h:251

TH2::FitSlicesY
virtual void FitSlicesY(TF1 *f1=0, Int_t firstxbin=0, Int_t lastxbin=-1, Int_t cut=0, Option_t *option="QNR", TObjArray *arr=0)
Project slices along Y in case of a 2-D histogram, then fit each slice with function f1 and make a hi...
Definition TH2.cxx:1044

TPad
The most important graphics class in the ROOT system.
Definition TPad.h:26

TPad::Divide
void Divide(Int_t nx=1, Int_t ny=1, Float_t xmargin=0.01, Float_t ymargin=0.01, Int_t color=0) override
Automatic pad generation by division.
Definition TPad.cxx:1178

TPad::cd
TVirtualPad * cd(Int_t subpadnumber=0) override
Set Current pad.
Definition TPad.cxx:604

TString
Basic string class.
Definition TString.h:136

TString::Data
const char * Data() const
Definition TString.h:369

TString::ReplaceAll
TString & ReplaceAll(const TString &s1, const TString &s2)
Definition TString.h:692

TString::Append
TString & Append(const char *cs)
Definition TString.h:564

TStyle::SetFrameFillColor
void SetFrameFillColor(Color_t color=1)
Definition TStyle.h:355

TStyle::SetTitleW
void SetTitleW(Float_t w=0)
Definition TStyle.h:398

TStyle::SetTitleH
void SetTitleH(Float_t h=0)
Definition TStyle.h:399

TStyle::SetLabelSize
void SetLabelSize(Float_t size=0.04, Option_t *axis="X")
Set size of axis labels.
Definition TStyle.cxx:1392

c1
return c1
Definition legend1.C:41