//////////////////////////////////////////////////////////////////////////
//
// 'BASIC FUNCTIONALITY' RooFit tutorial macro #101
// 
// Fitting, plotting, toy data generation on one-dimensional p.d.f
//
// pdf = gauss(x,m,s) 
//
//
// 07/2008 - Wouter Verkerke 
// 
/////////////////////////////////////////////////////////////////////////

#ifndef __CINT__
#include "RooGlobalFunc.h"
#endif
#include "RooRealVar.h"
#include "RooDataSet.h"
#include "RooGaussian.h"
#include "TCanvas.h"
#include "RooPlot.h"
#include "TAxis.h"
using namespace RooFit ;


void rf101_basics()
{
  // S e t u p   m o d e l 
  // ---------------------

  // Declare variables x,mean,sigma with associated name, title, initial value and allowed range



  // Build gaussian p.d.f in terms of x,mean and sigma

  // Construct plot frame in 'x'

  // P l o t   m o d e l   a n d   c h a n g e   p a r a m e t e r   v a l u e s
  // ---------------------------------------------------------------------------

  // Plot gauss in frame (i.e. in x) 

  // Change the value of sigma to 3

  // Plot gauss in frame (i.e. in x) and draw frame on canvas
 
  // G e n e r a t e   e v e n t s 
  // -----------------------------

  // Generate a dataset of 1000 events in x from gauss
 

  // Make a second plot frame in x and draw both the 
  // data and the p.d.f in the frame
  
  // F i t   m o d e l   t o   d a t a
  // -----------------------------

  // Fit pdf to data
 
  // Print values of mean and sigma (that now reflect fitted values and errors)
 

  // Draw all frames on a canvas
  
 
}