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#include <TSystem.h>
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#include <TFile.h>
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#include <TTree.h>
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//....for AutoLibraryLoader, requires <use name=FWCore/FWLite> in BuildFile
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#include "FWCore/FWLite/src/AutoLibraryLoader.h"
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//....for SiPixelDigis, requires <use name=DataFormats/SiPixelDigi> in BuildFile
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#include "DataFormats/Common/interface/DetSetVector.h"
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#include "DataFormats/SiPixelDigi/interface/PixelDigi.h"
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using namespace std;
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int main()
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{
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//....chose data to look at
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// string filename = "first20.root";
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// string branchname = "PixelDigiedmDetSetVector_siPixelDigis__RP.";
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string filename = "hlt.root";
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string branchname = "PixelDigiedmDetSetVector_siPixelDigis__DigiToRawTest.";
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//....load FWlite
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gSystem->Load("libFWCoreFWLite");
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AutoLibraryLoader::enable();
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//....open file
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TFile file(filename.data());
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TTree * events = dynamic_cast<TTree *>(file.Get("Events") );
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assert(events);
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cout << "Nevents " << events->GetEntries() << endl;
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//....connect branch to a local variable
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TBranch* branch = events->GetBranch(branchname.data());
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edm::Wrapper<edm::DetSetVector<PixelDigi> >* blah=0; //....zero is required
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branch->SetAddress(&blah);
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//....loop over events
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for( int i=0; i<events->GetEntries(); i++){
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if(i==1) break;
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//....load data for this event
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branch->GetEntry(i);
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//....get pointer to the pixel data
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const edm::DetSetVector<PixelDigi>* bprod=blah->product();
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//....loop over detectors
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edm::DetSetVector<PixelDigi>::const_iterator iter = bprod->begin(), iterEnd =bprod->end();
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for(; iter != iterEnd; iter++){
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//....loop over digis
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edm::DetSet<PixelDigi>::const_iterator digi=iter->data.begin(), digiEnd=iter->data.end();
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for(; digi != digiEnd; digi++){
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cout << "event#=" << i << " "
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<< "row=" << digi->row() << " "
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<< "col=" << digi->column() << " "
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<< "adc=" << digi->adc() << " "
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<< endl;
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}
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}
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}
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}
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