JConvertToPDF2D.cc

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#include <string>
#include <iostream>
#include <iomanip>
#include <vector>
 
#include "TROOT.h"
#include "TFile.h"
#include "TKey.h"
#include "TH2.h"
#include "TProfile2D.h"
#include "TString.h"
#include "TRegexp.h"
 
#include "JGizmo/JRootObjectID.hh"
#include "JGizmo/JGizmoToolkit.hh"
 
#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"
 
 
/**
 * \file
 * Auxiliary program to convert 2D histograms to PDFs.
 * The option <tt>-f</tt> corresponds to <tt><file name>:<object name></tt>.
 *
 * Possible operations (option <tt>-u <operation></tt>:
 *     - NXY\n
 *       make 2D PDF;
 *     - NX\n
 *       make PDF along x-axis;
 *     - NY\n
 *       make PDF along y-axis;
 *     - WX\n
 *       divide bin contents by width of x-bin;
 *     - WY\n
 *       divide bin contents by width of y-bin;
 *     - E\n
 *       apply operation also to bin errors;
 * \author mdejong
 */
int main(int argc, char **argv)
{
  using namespace std;
  using namespace JPP;
  
  vector<JRootObjectID> inputFile;
  string                outputFile;
  string                option;
  int                   debug;
 
  try {
 
    JParser<> zap("Auxiliary program to convert 2D histograms to PDFs.");
 
    zap['f'] = make_field(inputFile,  "<input file>:<object name>");
    zap['O'] = make_field(option);
    zap['o'] = make_field(outputFile, "ROOT file with histogram(s)") = "pdf.root";
    zap['d'] = make_field(debug)      = 1;
 
    zap(argc, argv);
  }
  catch(const exception &error) {
    FATAL(error.what() << endl);
  }
 
 
  vector<TH2*> listOfObjects;
 
  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)) {
 
        TObject* object = key->ReadObj();
        
        TH2*  h2 = dynamic_cast<TH2*>(object);
 
        try { h2 = dynamic_cast<TProfile2D&>(*object).ProjectionXY(); } catch(exception&) {}
        
        if (h2 != NULL) {
          listOfObjects.push_back(h2);
        } else {
          ERROR("Incompatible object " << object->GetName() << endl);
        }
      }
    }
  }
 
  TFile out(outputFile.c_str(), "recreate");
 
  for (vector<TH2*>::iterator h2 = listOfObjects.begin(); h2 != listOfObjects.end(); ++h2) {
 
    convertToPDF(**h2, option);
    
    (*h2)->Write();
  }
  
  out.Write();
  out.Close();
}