Re: chi2 function and delta (dirac) function

From: Marc Escalier <escalier_at_lal.in2p3.fr>
Date: Wed, 29 Sep 2010 09:34:27 +0200


thank you so much Lorenzo


Lorenzo Moneta a écrit :
> Hi Marc,
>
>
> On Sep28, 2010, at 11:15 PM, Marc Escalier wrote:
>
>
>> Dear rooters,
>>
>> would you know if there exist a existing chi2 function in root
>>
>>
>
> ROOT::Math::chisquared_pdf(x, ndf) for the probability density function
>
> see http://project-mathlibs.web.cern.ch/project-mathlibs/sw/html/group__PdfFunc.html#g5b7dd7a4ee65db967899357699e7cb4b
>
>
> ROOT::Math::chisquared_cdf(x, ndf) for the cumulative distribution
>
> see http://project-mathlibs.web.cern.ch/project-mathlibs/sw/html/group__ProbFunc.html#g71284e1163c692051ffad74dae11a061
>
>
> ROOT::Math::chisquared_quantile(p, ndf) for the quantile (inverse of cumulative)
>
> see http://project-mathlibs.web.cern.ch/project-mathlibs/sw/html/group__QuantFunc.html#gc799813b6815345f48ab4a707e56b553
>
> All these functions are defined in the header file "Math/DistFunc.h"
>
> Best Regards
>
> Lorenzo
>
Received on Wed Sep 29 2010 - 09:40:51 CEST

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