FRIB_e21062/PIDCutChecker.C

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2022-05-24 18:21:12 -04:00
#include <TH2F.h>
#include <TFile.h>
#include <TChain.h>
#include <TROOT.h>
#include <TStyle.h>
#include <TCanvas.h>
#include <TCutG.h>
#include <TString.h>
#include <TObjArray.h>
void PIDCutChecker(TH2F* hist,
TString saveFileName = "PIDCuts.root",
bool isLogz = false
){
printf("================ Graphic Cut Checker for PID ============== \n");
gStyle->SetOptStat("neiou");
TCanvas * cCutCreator = new TCanvas("cCutCreator", "PID Cut Creator", 100, 100, 800, 800);
if( !cCutCreator->GetShowToolBar() ) cCutCreator->ToggleToolBar();
cCutCreator->Update();
if( isLogz ) cCutCreator->cd()->SetLogz();
hist->Draw("colz");
TFile * cutFile;
TCutG * cut = NULL;
TObjArray * cutList;
///===================== load the cutFile and load the cutList
int numCut = 0;
cutFile = new TFile(saveFileName, "UPDATE");
bool listExist = cutFile->GetListOfKeys()->Contains("cutList");
if( !listExist ) {
cutList = new TObjArray();
}else{
cutList = (TObjArray*) cutFile->FindObjectAny("cutList");
numCut = cutList->GetLast()+1;
printf("----- found %d cuts \n", numCut);
for( int k = 0; k < numCut; k++){
if( cutList->At(k) != NULL ){
printf("found a cut at %2d \n", k);
cut = (TCutG*) cutList->At(k);
cut->Draw("same");
}else{
printf(" No cut at %2d \n", k);
}
}
}
cCutCreator->Modified(); cCutCreator->Update();
}