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fgolf |
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#include "TList.h"
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#include "TObjArray.h"
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#include "TH1.h"
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#include "TH2.h"
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#include "TROOT.h"
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#include "TClass.h"
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#include "TObjString.h"
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#include <iostream>
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#include "getMyHistosNames.h"
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//--------------------------------------------------------
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// Our histogram are named XX_YY_ZZ
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// where XX=tt, WW, WZ, etc
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// YY refers to what is actually plotted
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// ZZ=em, ee, mm, all
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//
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// It is useful to get a list of all the YY's
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//
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// We can get this list by looking at all the existing hostograms.
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//
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// This list is returned here as TObjArray*
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//
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// The passed prefix should be, eg, "tt" and the passed postfix
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// should be, eg, "ee", so that the list is built only
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// from the "tt_YY_ee" histograms
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//
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// Claudio 4 Sep 2007
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//
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// Added feature to skip 2D histograms
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//--------------------------------------------------------
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TObjArray* getMyHistosNames( const char* prefix, const char* postfix, bool keep2D) {
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TObjArray* array = new TObjArray();
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bool skip2D = !keep2D;
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// Get a list of object and their iterator
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TList* list = gDirectory->GetList() ;
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TIterator* iter = list->MakeIterator();
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// Loop over objects
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TObject* obj;
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while((obj=iter->Next())) {
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// Only look at objects beginning with 'prefix' and ending with 'postfix'
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TString name = obj->GetName();
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if (name.BeginsWith(prefix) && name.EndsWith(postfix)) {
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if (skip2D && obj->IsA()->InheritsFrom(TH2::Class())) continue;
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// Only look at objects that inherit from TH1 or TH2
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if (obj->IsA()->InheritsFrom(TH1::Class()) ||
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obj->IsA()->InheritsFrom(TH2::Class())) {
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// Find the central key, ie, the YY
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TObjArray* t = name.Tokenize("_");
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TString z = TString(t->At(1)->GetName());
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if (t->GetEntries() == 4){
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z = TString(Form("%s_%s",t->At(1)->GetName(),t->At(2)->GetName()));
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}
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// cout << t->At(1)->GetName() << endl;
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// add to the output array
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TObjString* zobj = new TObjString(z);
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array->Add(zobj);
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}
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}
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}
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return array;
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}
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