JMathSupportkit.cc

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

#include "TROOT.h"
#include "TFile.h"
#include "TH1D.h"

#include "JMath/JMathSupportkit.hh"

#include "JROOT/JManager.hh"

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


/**
 * \file
 *
 * Example program to plot mathematical functions.
 * \author mdejong
 */
int main(int argc, char**argv)
{
  using namespace std;
  using namespace JPP;

  string outputFile;
  int    debug;

  try {

    JParser<> zap("Example program to plot mathematical functions.");

    zap['o'] = make_field(outputFile)     = "math.root";
    zap['d'] = make_field(debug)          = 3;

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


  JManager<int, TH1D> H1(new TH1D("[%]", NULL, 1000, -1.0, +1.0));


  for (int ix = 1; ix <= H1->GetXaxis()->GetNbins(); ++ix) {

    const Double_t x = H1->GetXaxis()->GetBinCenter(ix);

    for (unsigned int n = 0; n <= 5; ++ n) {

      H1[n]->SetBinContent(ix, legendre(n,x));
    }
  }


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

  out << H1;

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

  return 0;
}