RE: TF3::GetHistogram() seg violation

Hi Oliver,

> I do not see what you describe here.

[Serhiy Senyukov] Ok. I have found the reason for the first issue. There were parameters missing in the declaration of the 3D function. However the bin content of the produced histogram is always zero.

Regards,
Serhiy.

> root [0] .x ser.C
> Processing ser.C...
> Test function3 test = 100
> Info in <TCanvas::MakeDefCanvas>: created default TCanvas with name c1
>
> The macro is:
>
> Double_t test(Double_t *x, Double_t *par)
> {
> return 100;
> }
>
> void ser(Int_t nPoints=5){
> TF3* test_f3=new TF3("test_f3",test,0,10,0,10,0,10,2);
> test_f3->SetParameters(1,2);
> test_f3->SetNpx(nPoints);
> test_f3->SetNpy(nPoints);
> test_f3->SetNpz(nPoints);
>
> cout<<"Test function3 test = "<<test_f3->Eval(5,5,5)<<endl;
>
> test_f3->Draw();
> TH3F* test3_hist=(TH3F*)test_f3->GetHistogram();
> }
Received on Wed Mar 30 2011 - 14:21:12 CEST