Logo ROOT   6.12/07
Reference Guide
loopdir11.C File Reference

Detailed Description

View in nbviewer Open in SWAN Example of script to loop on all the objects of a ROOT file directory and print on Postscript all TH1 derived objects.

This script uses the file generated by tutorial hsimple.C

Iš×L+

void loopdir11() {
TFile *f1 = TFile::Open("hsimple.root");
c1.Print("hsimple.ps[");
for(auto k : *f1->GetListOfKeys()) {
TKey *key = static_cast<TKey*>(k);
TClass *cl = gROOT->GetClass(key->GetClassName());
if (!cl->InheritsFrom("TH1")) continue;
TH1 *h = key->ReadObject<TH1>();
h->Draw();
c1.Print("hsimple.ps");
}
c1.Print("hsimple.ps]");
}
Author
Rene Brun

Definition in file loopdir11.C.