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Thanks guys,<br>
<br>
I'll have a look to make sure I'm passing in a proper error or
covariance matrix and my vectors make sense. All the pull values return
NAN. I didn't think anything had changed in the fitter code but I
wasn't sure, so it's probably something I'm doing wrong. Thanks for the
tips.<br>
<br>
Cheers,<br>
-Blake<br>
<br>
On 08/03/10 07:06 PM, Matt wrote:
<blockquote type="cite" cite="mid:a9b9d4861003081706i4d6fcfb4xca4bf3124a61d504@mail.gmail.com">Hi Curtis and Blake,
<div><br>
</div>
<div> I'm not sure if this response will get bounced from the
offline mailing list. The mailer may not recognize this address. </div>
<div><br>
</div>
<div> The pulls are calculated as (x_init - x_final)/error, so NAN
could indicate err=0.0 for that particular fit. Could it be some odd
error matrix which is getting passed in? I might've thought it would've
blown up during the fit itself, but perhaps not. </div>
<div><br>
</div>
<div> Are other pulls (GetPull(1), GetPull(2), etc.) on the other
fit parameters NAN as well? Or are they looking OK?</div>
<div><br>
</div>
<div>Matt</div>
<div><br>
</div>
<div><br>
<br>
<div class="gmail_quote">On Mon, Mar 8, 2010 at 4:02 PM, Curtis A.
Meyer <<a href="mailto:cmeyer@ernest.phys.cmu.edu">cmeyer@ernest.phys.cmu.edu</a>>
wrote:<br>
<blockquote class="gmail_quote">Hi
Blake -<br>
<br>
we started playing with this again at CMU, but unfortunately the code<br>
has been orphaned since Matt Bellis left a couple of years ago. I am a
bit<br>
surprised that it stopped working as I do not believe that anything in<br>
the KINFIT<br>
code has changed.<br>
<br>
curtis<br>
<br>
On 3/8/10 5:24 PM, Blake Leverington wrote:<br>
> Hey all,<br>
><br>
> Any ideas on why kfit->GetPull(0); in DKinFit returns NAN though<br>
> kfit->Prob(); still returns reasonable values? I remember this
working<br>
> months ago, put I can't get the pulls from the kinematic fitter
anymore,<br>
> and I think I need to see this for my analysis at the moment.<br>
><br>
> Who is maintaining the kinematic fitter now?<br>
><br>
> -Blake<br>
> _______________________________________________<br>
> Halld-offline mailing list<br>
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> <a href="https://mailman.jlab.org/mailman/listinfo/halld-offline">https://mailman.jlab.org/mailman/listinfo/halld-offline</a><br>
><br>
><br>
<br>
<br>
--<br>
Prof. Curtis A. Meyer Department of Physics<br>
Phone: (412) 268-2745 Carnegie Mellon University<br>
Fax: (412) 681-0648 Pittsburgh PA 15213-3890<br>
<a href="mailto:cmeyer@ernest.phys.cmu.edu">cmeyer@ernest.phys.cmu.edu</a>
<a href="http://www.curtismeyer.com/">http://www.curtismeyer.com/</a><br>
<br>
<br>
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</blockquote>
</div>
<br>
<br clear="all">
<br>
-- <br>
-- <br>
----------------------------<br>
Matt Bellis<br>
Stanford University<br>
(SLAC office) 650-926-4392<br>
(cell) 412-310-4586<br>
----------------------------<br>
</div>
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