Fitting function cannot be compiled

From: Wei Xie (xiewei@ceropa.weizmann.ac.il)
Date: Fri Jun 26 1998 - 13:53:42 MEST


Dear ROOTer's

My fitting process is like followed:

(1). Generate a histogram with 1000 Monte Carlo entries and fit it with my
     function. 
(2). Generate a second histogram with another 1000 entries and do the 
     same fitting.
(3). repeat this process 200 times.

Specifically, the code is more or less like followed.  During the
loop from 0 to 200, when i=0, everything is OK but when i>0, ROOT 
start to give messages:

>>>>    Function: myfunction cannot be compiled.

please do some help for this problem ! 

Sincerely, Xie

----------
The code |
-------------------------

  Double_t myfunction(Double_t *x, Double_t *par) // Fitting function.
  { .........................................}

  void fit()
  {
     ...................

     for(int i=0;i<=200;i++)       //*****>   repeat fitting 200 times
     {  ...................

        fpx = new TH1F("fpx","",BinNum, Xmin,Xmax);

        for(int j=0;j<1000;j++)
                     fpx->Fill(....);    //****> 1000 Monte Carlo Events
      
        FitFunc = new TF1("myfunction",myfunction,-10,20,2);
        FitFunc->SetParameter(0.5,0.1);
        FitFunc->SetParNames("Normalize","Most Probable");
        fpx->Fit("myfunction","r");
        
        delete fpx;
        delete FitFunc;
     }
  }



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