[Fwd: Re: [ROOT] problems with TMinuit::mnexcm]

From: Belen Salvachua Ferrando (Belen.Salvachua.Ferrando@cern.ch)
Date: Tue Apr 20 2004 - 15:28:34 MEST


Hello! first I move to the directory $ROOTSYS/tutorials, then I execute 
the root command, and I get the root prompt, and
then I load the file Ifit.C and execute the routine inside.

I copy it from the screen :

tical10:rh73_gcc2952/root/tutorials> root
-------------------------------------------------------------------------------------
  *******************************************
  *                                         *
  *        W E L C O M E  to  R O O T       *
  *                                         *
  *   Version   3.05/05        8 May 2003   *
  *                                         *
  *  You are welcome to visit our Web site  *
  *          http://root.cern.ch            *
  *                                         *
  *******************************************

FreeType Engine v2.1.3 used to render TrueType fonts.
Compiled for linux with thread support.

CINT/ROOT C/C++ Interpreter version 5.15.86, Apr 29 2003
Type ? for help. Commands must be C++ statements.
Enclose multiple statements between { }.

root [0] .L Ifit.C

root [1] Ifit()

 **********
 **    1 **SET ERR           1
 **********
 PARAMETER DEFINITIONS:
    NO.   NAME         VALUE      STEP SIZE      LIMITS
     1 a1           3.00000e+00  1.00000e-01     no limits
     2 a2           1.00000e+00  1.00000e-01     no limits
     3 a3           1.00000e-01  1.00000e-02     no limits
     4 a4           1.00000e-02  1.00000e-03     no limits

 **********
 **    2 **MIGRAD         500           1
 **********
 FIRST CALL TO USER FUNCTION AT NEW START POINT, WITH IFLAG=4.

 *** Break *** segmentation violation
Root > Function Ifit() busy flag cleared

root [2] .q

This is the end of ROOT -- Goodbye
------------------------------------------------------------------------------------------------

Belen.


Rene Brun wrote:

>I do not see any problems wityh this example ($ROOTSYS/tutorials/Ifit.C)
>Could you tell us very precisely what you are doing/executing?
>
>Rene Brun
>
>Belen Salvachua Ferrando wrote:
>  
>
>>Hello!
>>
>>   I'm trying to use the TMinuit library, first I tried with the example
>>in the web:   http://root.cern.ch/root/HowtoFit.html
>>in the sub section Fitting in general using the class TMinuit. But when
>>the program arrives to the command line:
>>
>> gMinuit ->mnexcm ("MIGRAD", arglist ,2,ierflg);
>>
>> I get :
>>
>> **********
>> **    2 **MIGRAD         500           1
>> **********
>> FIRST CALL TO USER FUNCTION AT NEW START POINT, WITH IFLAG=4.
>>
>> *** Break *** segmentation violation
>>Abort (core dumped)
>>
>>The ROOT version I'm using is: v3.05.05
>>and the compile version : rh73_gcc2952
>>
>>Am I doing something wrong?
>>
>>Thanks and regards
>>   Belen.
>>    
>>



This archive was generated by hypermail 2b29 : Sun Jan 02 2005 - 05:50:07 MET