Hello, if I run the cc.C subroutine, I get a TCanvas with two TPads where there is inside of each of them a TH2D.
I would like to get the TH2D without knowing its name a priori.
To do that, I use a piece of code like that
TCanvas *c = NULL;
TH2D *hh = NULL;
vector <TCanvas*> canvasV;
vector <TH2D*> histoV;
for(int i=0 ; i<gROOT->GetListOfCanvases()->GetSize() ; i++) {
TObject *obj = gROOT->GetListOfCanvases()->At(i);
if ( obj->IsA()->InheritsFrom( TCanvas::Class() ) ) {
c = (TCanvas*)obj;
canvasV.push_back(c);
}
}
c = canvasV[0]; // it is just to give an idea
for(int i=0 ; i<c->GetListOfPrimitives()->GetSize() ; i++) {
TObject *obj = c->GetListOfPrimitives()->At(i);
if ( obj->IsA()->InheritsFrom( TH1::Class() ) ) {
hh = (TH2D*)obj;
histoV.push_back(hh);
}
}
The code above is not perfect but gives an idea of what I do.
The problem is that if you do
.x cc.C
gROOT->GetListOfCanvases()->At(0)->GetListOfPrimitives()->At(0)->Print()
You will get a TPad and I do not succed to get the content of what is inside of the TPad. Do you have any idea?
PS: sorry if my problem is not very clear. I will try to reexplain better if so. cc.C (317 KB)
