#define histAnalysis_cxx // The class definition in histAnalysis.h has been generated automatically // by the ROOT utility TTree::MakeSelector(). This class is derived // from the ROOT class TSelector. For more information on the TSelector // framework see $ROOTSYS/README/README.SELECTOR or the ROOT User Manual. // The following methods are defined in this file: // Begin(): called everytime a loop on the tree starts, // a convenient place to create your histograms. // SlaveBegin(): called after Begin(), when on PROOF called only on the // slave servers. // Process(): called for each event, in this function you decide what // to read and fill your histograms. // SlaveTerminate: called at the end of the loop on the tree, when on PROOF // called only on the slave servers. // Terminate(): called at the end of the loop on the tree, // a convenient place to draw/fit your histograms. // // To use this file, try the following session on your Tree T: // // Root > T->Process("histAnalysis.C") // Root > T->Process("histAnalysis.C","some options") // Root > T->Process("histAnalysis.C+") // #include "histAnalysis.h" #include #include void histAnalysis::Begin(TTree *tree) { // The Begin() function is called at the start of the query. // When running with PROOF Begin() is only called on the client. // The tree argument is deprecated (on PROOF 0 is passed). TString option = GetOption(); } void histAnalysis::SlaveBegin(TTree *tree) { // The SlaveBegin() function is called after the Begin() function. // When running with PROOF SlaveBegin() is called on each slave server. // The tree argument is deprecated (on PROOF 0 is passed). Init(tree); TString option = GetOption(); } Bool_t histAnalysis::Process(Long64_t entry) { // The Process() function is called for each entry in the tree (or possibly // keyed object in the case of PROOF) to be processed. The entry argument // specifies which entry in the currently loaded tree is to be processed. // It can be passed to either TTree::GetEntry() or TBranch::GetEntry() // to read either all or the required parts of the data. When processing // keyed objects with PROOF, the object is already loaded and is available // via the fObject pointer. // // This function should contain the "body" of the analysis. It can contain // simple or elaborate selection criteria, run algorithms on the data // of the event and typically fill histograms. // WARNING when a selector is used with a TChain, you must use // the pointer to the current TTree to call GetEntry(entry). // The entry is always the local entry number in the current tree. // Assuming that fChain is the pointer to the TChain being processed, // use fChain->GetTree()->GetEntry(entry). return kTRUE; } void histAnalysis::SlaveTerminate() { // The SlaveTerminate() function is called after all entries or objects // have been processed. When running with PROOF SlaveTerminate() is called // on each slave server. } void histAnalysis::Terminate() { // The Terminate() function is the last function to be called during // a query. It always runs on the client, it can be used to present // the results graphically or save the results to file. }