Get a pointer to the last histogram in the stack (containing the sum)
TH1 *last = (TH1*)mystack->GetStack()->Last();
last->GetBinContent(binnumber);
Rene
Get a pointer to the last histogram in the stack (containing the sum)
TH1 *last = (TH1*)mystack->GetStack()->Last();
last->GetBinContent(binnumber);
Rene