Hi Claus, just a short answer ;), Check 'st2' variable for zero value. It is possible, that line histos[i].ptr->GetHisto()->GetListOfFunctions()->FindObject("stats"); doesn't find object with the name "stats". Best regards, Stanislav. Claus Horn wrote: > Hi ROOTers, > > just a short question: > > TPaveStats *st2 = (TPaveStats *) > histos[i].ptr->GetHisto()->GetListOfFunctions()->FindObject("stats"); > //TPaveStats *st1 = (TPaveStats *) > histos[i-1].ptr->GetHisto()->GetListOfFunctions()->FindObject("stats"); > st2->SetX1NDC(0.4); //st1->GetX1NDC()-0.1); > st2->SetX2NDC(0.6); > > compiles fine, but produces a Seg. Error, why? > > Regards, > > Claus Horn
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