[ROOT] Array of histograms

From: Niels Madsen (Niels.Madsen@cern.ch)
Date: Mon Feb 17 2003 - 17:00:10 MET 

Dear ROOTers,

I've made an array of some histograms :
TH1F *ap[5];
for (i=0; i<nset; i++) {
    sprintf(ntp,"ap_%d",i);
    ap[i] = new TH1F(ntp,"Antiprotons into mixing",100,0,15000);
}

And now I seem to have problems filling them we doing it like this 
(from an array of ntuples) :
  for (i=0; i<nset; i++) {
    c3->cd(i);
    sprintf(ntp,"pbars>>ap_%d",i);
    mixi[i]->Draw(ntp,cuta&&cutac,"");
  }

It does do something - and then crashes - is this supposed to work ? - 
is there some
more intelligent way to name the entries ?

Thanks,
Niels

-----------------------------------------
Dr. Niels Madsen
CERN - EP/LR - 15-R-023
CH-1211 Geneva 23
Switzerland			
Tel. +41 22 767 2387	Fax. +41 22 767 8955	
Lab. +41 22 767 9814	Mob. +41 79 201 0835

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