Re: chi2 function and delta (dirac) function

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 - 09:25:06 CEST