Anne,
Thanks for reporting this problem with TF12 in case the function
is a CINT function.
Now fixed in the CVS version.
Rene Brun
Anne Stutz wrote:
>
> Hello,
> I try to draw a TF12 function without success.
> First I have defined a function named "giller" and created a TF2 object
> (ftest) using the giller function. Then I have created a TF12 object.
> The result of the TF12::Eval method seems correct but not the TF12::Draw().
> Is there something wrong in what I am doing ?
> Best regards,
> Anne Stutz
>
> // M.Giller, A.Kacerzyk et al (ICRC 2003)
> Double_t giller(Double_t *x, Double_t *par) {
> Double_t E = x[0], age = x[1];
> Double_t a = 1.005, b = 0.06, c = 189, d = 7.06*age + 12.48, C =
> 0.111*age + 0.134, Ecr = 80;
> return
> C*E*(1-a*TMath::Exp(-d*E/Ecr))*TMath::Power(1+E/Ecr,-(age+b*TMath::Log(E/Ecr/c)));
> }
>
> void test()
> {
> TCanvas *MyC = new TCanvas("MyC","Energy Distributions",1);
> MyC->Divide(1,2);
>
> TF2* ftest = new TF2("giller",giller,0.1,1000.,0.,2.,0);
> MyC->cd(1);
> ftest->Draw();
>
> TF12* ftestx = new TF12("ftf12",ftest,2.5,"X");
> MyC->cd(2);
> ftf12->Draw();
> cout<<ftf12->Eval(0.)<<endl;
> cout<<ftf12->Eval(1)<<endl;
> cout<<ftf12->Eval(2)<<endl;
>
> }
>
> --
>
> ======================================
> | Anne Stutz |
> | Laboratoire de Physique Subatomique |
> | et de Cosmologie |
> | 53 Avenue des Martyrs |
> | 38026 GRENOBLE cedex |
> |--------------------------------------|
> | Tel:[33](0)4 76 28 41 80 |
> | Fax:[33](0)4 76 28 40 04 |
> | e-mail : Anne.Stutz@lpsc.in2p3.fr |
> ======================================
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