Re: Minuit2 ouput level

Hi all,

I'm running my code on some montacarlo data of simulated ATLAS events and there are just some non good events. I checked for quite some events where MINUIT is failing, and these events are clearly not usable. Most of the times all if fine, and all events with some bad fits are discarded. But the Minuit output is messing put important error messages.

I guess i will just have to live with them ...

Many Thanks!

        Bernhard

On Tue, 18 Mar 2008 21:21:39 +0100, Lorenzo Moneta <Lorenzo.Moneta_at_cern.ch> wrote:

> Hi Bernhard,
>
> unfortunatly TError is used for producing error and warning messages
> only for versions > 5.14.
> I would reccomend too to try to fix the error. Probably Migrad fails
> because you are giving wrong initial values
>
> Best Regards
>
> Lorenzo
> On Mar 18, 2008, at 8:00 PM, Kevin Lynch wrote:
>
>> Bernhard Bittner wrote:
>>> Hi Lorenzo,
>>> inserting
>>> gErrorIgnoreLevel = 1001;
>>> right at the beginning of the function where i call mimuit does not
>>> change anything, I still get the same output.
>>
>> You need to set a bigger number to really shut up Minuit2 :-)
>>
>> If you want it REALLY quiet, try
>>
>> gErrorIgnoreLevel = kFatal;
>>
>> Take a look at the logic in the root source where it uses the value of
>> gErrorIgnoreLevel: base/inc/TError.cxx and base/inc/TError.h
>>
>> This logic is the same in both 5.14 and 5.18, so I would imagine the
>> above approach should work in either case.
>>
>> But you might really want to explore _why_ your minimizations are
>> failing in the first place, rather than just silencing them ... they're
>> telling you something is very wrong. I just spent a week doing exactly
>> that, and it turned out my problems were much bigger than Minuit2
>> making lots of noise....
>>
>>> But I just found out, that since my classes are inside the ATLAS
>>> ATHENA framework and this framework uses ROOT 5.14 I guess i will have
>>> only the old version of ROOT to work with. Is there any other way in
>>> 5.14 to turn this messages of?
>>> Thanks,
>>> Bernhard
>>
>>
>> --
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>

-- 
Bernhard Bittner
mailto:bernhard.bittner_at_cern.ch