JStack1D.cc File Reference

Auxiliary program to make stack of ROOT histograms. More...

#include <string>
#include <iostream>
#include <iomanip>
#include "TROOT.h"
#include "TFile.h"
#include "TObject.h"
#include "TKey.h"
#include "TH1.h"
#include "THStack.h"
#include "TString.h"
#include "TRegexp.h"
#include "JGizmo/JRootObjectID.hh"
#include "JGizmo/JGizmoToolkit.hh"
#include "Jeep/JPrint.hh"
#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"

Go to the source code of this file.

Functions
int	main (int argc, char **argv)

Detailed Description

Auxiliary program to make stack of ROOT histograms.

The option -f corresponds to <file name>:<object name>.

Author

mdejong

Definition in file JStack1D.cc.

Function Documentation

int main	(	int	argc,
		char **	argv
	)

Definition at line 29 of file JStack1D.cc.

{
  using namespace std;
  using namespace JPP;

  vector<JRootObjectID>   inputFile;
  string                  outputFile;
  int                     debug;
 
  try {

    JParser<> zap("Auxiliary program to make stack of ROOT histograms.");
    
    zap['f'] = make_field(inputFile,  "<input file>:<object name>");
    zap['o'] = make_field(outputFile, "ROOT file with histogram(s)") = "stack.root";
    zap['d'] = make_field(debug)      = 0;
     
    zap(argc, argv);
  }
  catch(const exception &error) {
    FATAL(error.what() << endl);
  }


  THStack* hs = NULL;
  
  for (vector<JRootObjectID>::const_iterator input = inputFile.begin(); input != inputFile.end(); ++input) {

    DEBUG("Input: " << *input << endl);

    TDirectory* dir = getDirectory(*input);

    if (dir == NULL) {
      ERROR("File: " << input->getFullFilename() << " not opened." << endl);
      continue;
    }

    const TRegexp regexp(input->getObjectName());

    TIter iter(dir->GetListOfKeys());

    for (TKey* key; (key = (TKey*) iter.Next()) != NULL; ) {

      const TString tag(key->GetName());

      DEBUG("Key: " << tag << " match = " << tag.Contains(regexp) << endl);
        
      // option match

      if (tag.Contains(regexp) && isTObject(key)) {

        TH1* h1 = dynamic_cast<TH1*>(key->ReadObj());

        if (h1 != NULL) {

          if (hs == NULL) {
            hs = new THStack(MAKE_CSTRING(h1->GetName() << "_s"), NULL);
          }

          hs->Add(h1);
        }
      }
    }
  }

  if (hs != NULL) {

    TFile out(outputFile.c_str(), "recreate");

    out.WriteTObject(hs);

    out.Write();
    out.Close();
  }
}