JF1.cc

Go to the documentation of this file.

#include <string>
#include <iostream>
#include <iomanip>

#include "TROOT.h"
#include "TFile.h"
#include "TF1.h"

#include "JTools/JRange.hh"

#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"


/**
 * \file
 * Auxiliary program to write ROOT function.
 * \author mdejong
 */
int main(int argc, char **argv)
{
  using namespace std;

  typedef JTOOLS::JRange<double>  JRange_t;

  string   formula;
  string   name;
  string   outputFile;
  JRange_t x;
  int      debug;

  try {

    JParser<> zap("Auxiliary program to write ROOT function.");

    zap['F'] = make_field(formula,    "function, e.g: \"[0]+[1]*x\"");
    zap['T'] = make_field(name,       "name of ROOT function")             = "user";
    zap['o'] = make_field(outputFile, "ROOT file with formula")            = "f1.root";
    zap['x'] = make_field(x,          "abscissa range");
    zap['d'] = make_field(debug)          = 1;

    zap(argc, argv);
  }
  catch(const exception &error) {
    FATAL(error.what() << endl);
  }

  TF1 f1(name.c_str(), formula.c_str(), x.getLowerLimit(), x.getUpperLimit());
  
  TFile out(outputFile.c_str(), "recreate");

  out.WriteTObject(&f1);
  
  out.Write();
  out.Close();
}