interface/fwlite/Scanner.h

// these includes are FWLite-safe
#include "DataFormats/FWLite/interface/Handle.h"
#include "DataFormats/FWLite/interface/Event.h"
// these are from ROOT, so they're safe too
#include <TString.h>
#include <TObjString.h>
#include <TObjArray.h>
#include <TDirectory.h>
#include <TEnv.h>

#if !defined(__CINT__) && !defined(__MAKECINT__)
#include "UserCode/GPetrucc/interface/fwliteHelpers.h"
#else
#ifndef UserCode_GPetrucc_CINT_load_library
#define UserCode_GPetrucc_CINT_load_library
// load the library that contains the dictionaries
int _load_UserCodeGPetrucc = gSystem->Load("libUserCodeGPetrucc.so");
#endif
#endif

#include "UserCode/GPetrucc/interface/fwlite/EventSelectors.h"

namespace fwlite {
    template<typename T>
    class Scanner {
        public:
            typedef fwlite::Handle<std::vector<T> > HandleT;
            Scanner(fwlite::EventBase *ev, const char *label, const char *instance = "", const char *process="")  :
                event_(ev), label_(label), instance_(instance), 
                printFullEventId_(ev->isRealData()),
                ignoreExceptions_(false),
                exprSep_(":"),
                maxLinesToPrint_(50)
            {
                objType = helper::Parser::elementType(Reflex::Type::ByTypeInfo(HandleT::TempWrapT::typeInfo()));
                eventSelectors_.SetOwner();
            }

            
            void scan(const char *exprs, const char *cut="", int nmax=-1) {
                helper::ScannerBase scanner(objType); 
                scanner.setIgnoreExceptions(ignoreExceptions_);

                TObjArray  *exprArray = TString(exprs).Tokenize(exprSep_);
                int rowline = 0;
                if (printFullEventId_) {
                    printf(" : %9s : %4s : %9s : %3s", "RUN", "LUMI", "EVENT", "#IT");
                    rowline += 3*4+9+4+9+3-1; // -1 as first char remain blank
                } else {
                    printf(" : %5s : %3s", "EVENT", "#IT");
                    rowline += 3+6+3+3-1;  // -1 as first char remain blank
                }
                for (int i = 0; i < exprArray->GetEntries(); ++i) {
                    const char *ex = ((TObjString *)(*exprArray)[i])->GetString();
                    scanner.addExpression(ex);
                    printf(" : %8s", (strlen(ex)>8 ? ex+strlen(ex)-8 : ex)); // the rightmost part is usually the more interesting one
                    rowline += 3+8;
                }
                std::cout << " :" << std::endl;
                rowline += 2;
                delete exprArray;

                TString rule('-', rowline);
                std::cout << " " << rule << " " << std::endl;

                if (strlen(cut)) scanner.setCut(cut);

                int iev = 0, line = 0;
                for (event_->toBegin(); (iev != nmax) && !event_->atEnd(); ++iev, ++(*event_)) {
                    if (!selectEvent(*event_)) continue;
                    handle_.getByLabel(*event_, label_.c_str(), instance_.c_str(), process_.c_str());
                    const std::vector<T> & vals = *handle_;
                    for (size_t j = 0, n = vals.size(); j < n; ++j) {
                        if (!scanner.test(&vals[j])) continue;
                        if (printFullEventId_) {
                            const edm::EventAuxiliary &id = event_->eventAuxiliary();
                            printf(" : %9d : %4d : %9d : %3d", id.run(), id.luminosityBlock(), id.event(), j);
                        } else {
                            printf(" : %5d : %3d", iev, j);
                        }
                        scanner.print(&vals[j]);
                        std::cout << " :" << std::endl;
                        if (++line == maxLinesToPrint_) {
                            line = 0;
                            if (!wantMore()) { 
                                iev = nmax-1; // this is to exit the outer loop
                                break;        // and this to exit the inner one
                             }
                        }
                    }
                }
                std::cout << std::endl;
            }
    
            TH1 * draw(const char *expr, const char *cut = "", TString drawopt = "", TH1 *hist = 0) {
                // prep the machinery
                helper::ScannerBase scanner(objType);
                scanner.setIgnoreExceptions(ignoreExceptions_);
                if (!scanner.addExpression(expr)) return 0;
                if (strlen(cut)) scanner.setCut(cut);

                // make histo, if needed
                if (hist == 0) {
                    htempDelete();
                    hist = new TH1F("htemp", 
                            (strlen(cut) ? TString(expr)+"{"+cut+"}" : TString(expr)), 
                            gEnv->GetValue("Hist.Binning.1D.x",100), 0, 0);
                    hist->SetBit(TH1::kCanRebin);
                }

                // fill histogram
                for (event_->toBegin(); !event_->atEnd(); ++(*event_)) {
                    if (!selectEvent(*event_)) continue;
                    handle_.getByLabel(*event_, label_.c_str(), instance_.c_str(), process_.c_str());
                    const std::vector<T> & vals = *handle_;
                    for (size_t j = 0, n = vals.size(); j < n; ++j) {
                        scanner.fill1D(&vals[j], hist);
                    }
                }

                if (!TString(drawopt).Contains("goff",TString::kIgnoreCase)) hist->Draw(drawopt);
                return hist;
            }
            TH1 * draw(const char *expr, int bins, double xlow, double xhigh, const char *cut = "", const char *drawopt = "") {
                htempDelete();
                TH1 * htemp = new TH1F("htemp", (strlen(cut) ? TString(expr)+"{"+cut+"}" : TString(expr)), bins, xlow, xhigh);
                return draw(expr,cut,drawopt,htemp);
            }

            TProfile * drawProf(TString xexpr, TString yexpr, const char *cut = "", TString drawopt = "", TProfile *hist = 0) {
                // prep the machinery
                helper::ScannerBase scanner(objType);
                scanner.setIgnoreExceptions(ignoreExceptions_);
                if (!scanner.addExpression(xexpr)) return 0;
                if (!scanner.addExpression(yexpr)) return 0;
                if (strlen(cut)) scanner.setCut(cut);

                // make histo, if needed
                if (hist == 0) {
                    htempDelete();
                    hist = new TProfile("htemp", 
                            (strlen(cut) ? yexpr+":"+xexpr+"{"+cut+"}" : yexpr+":"+xexpr), 
                            gEnv->GetValue("Hist.Binning.1D.x",100), 0., 0.);
                   hist->SetBit(TH1::kCanRebin);
                }

                // fill histogram
                for (event_->toBegin(); !event_->atEnd(); ++(*event_)) {
                    if (!selectEvent(*event_)) continue;
                    handle_.getByLabel(*event_, label_.c_str(), instance_.c_str(), process_.c_str());
                    const std::vector<T> & vals = *handle_;
                    for (size_t j = 0, n = vals.size(); j < n; ++j) {
                        scanner.fillProf(&vals[j], hist);
                    }
                }

                if (!TString(drawopt).Contains("goff",TString::kIgnoreCase)) hist->Draw(drawopt);
                return hist;
            }
            TProfile * drawProf(TString xexpr, int bins, double xlow, double xhigh, TString yexpr, const char *cut = "", const char *drawopt = "") {
                htempDelete();
                TProfile * htemp = new TProfile("htemp", (strlen(cut) ? yexpr+":"+xexpr+"{"+cut+"}" : yexpr+":"+xexpr), bins, xlow, xhigh);
                return drawProf(xexpr,yexpr,cut,drawopt,htemp);
            }

            TH2 * draw2D(TString xexpr, TString yexpr, const char *cut = "", TString drawopt = "", TH2 *hist = 0) {
                // prep the machinery
                helper::ScannerBase scanner(objType);
                scanner.setIgnoreExceptions(ignoreExceptions_);
                if (!scanner.addExpression((const char *)xexpr)) return 0;
                if (!scanner.addExpression((const char *)yexpr)) return 0;
                if (strlen(cut)) scanner.setCut(cut);

                // make histo, if needed
                if (hist == 0) {
                    // ok this is much more a hack than for the 1D case
                    double xmin = 0, xmax = -1, ymin = 0, ymax = -1;
                    for (event_->toBegin(); !event_->atEnd(); ++(*event_)) {
                        if (!selectEvent(*event_)) continue;
                        handle_.getByLabel(*event_, label_.c_str(), instance_.c_str(), process_.c_str());
                        const std::vector<T> & vals = *handle_;
                        for (size_t j = 0, n = vals.size(); j < n; ++j) {
                            if (!scanner.test(&vals[j])) continue;
                            double x = scanner.eval(&vals[j],0);
                            double y = scanner.eval(&vals[j],1);
                            if ((xmax == -1) || (x >= xmax)) xmax = x;
                            if ((xmin ==  0) || (x <= xmin)) xmin = x;
                            if ((ymax == -1) || (y >= ymax)) ymax = y;
                            if ((ymin ==  0) || (y <= ymin)) ymin = y;
                        }
                    }
                    htempDelete();
                    hist = new TH2F("htemp", 
                            (strlen(cut) ? yexpr+":"+xexpr+"{"+cut+"}" : yexpr+":"+xexpr), 
                            gEnv->GetValue("Hist.Binning.2D.x",20), xmin, xmax,
                            gEnv->GetValue("Hist.Binning.2D.y",20), ymin, ymax);
                }

                // fill histogram
                for (event_->toBegin(); !event_->atEnd(); ++(*event_)) {
                    if (!selectEvent(*event_)) continue;
                    handle_.getByLabel(*event_, label_.c_str(), instance_.c_str(), process_.c_str());
                    const std::vector<T> & vals = *handle_;
                    for (size_t j = 0, n = vals.size(); j < n; ++j) {
                        scanner.fill2D(&vals[j], hist);
                    }
                }

                if (!strlen(hist->GetXaxis()->GetTitle())) hist->GetXaxis()->SetTitle(xexpr);
                if (!strlen(hist->GetYaxis()->GetTitle())) hist->GetYaxis()->SetTitle(yexpr);
                if (!TString(drawopt).Contains("goff",TString::kIgnoreCase)) hist->Draw(drawopt);
                return hist;
            }
            TH2 * draw2D(TString xexpr, int xbins, double xlow, double xhigh, 
                         TString yexpr, int ybins, double ylow, double yhigh,
                         const char *cut = "", const char *drawopt = "") {
                htempDelete();
                TH2 * htemp = new TH2F("htemp", (strlen(cut) ? yexpr+":"+xexpr+"{"+cut+"}" : yexpr+":"+xexpr),
                                        xbins, xlow, xhigh, ybins,ylow,yhigh);
                return draw2D(xexpr,yexpr,cut,drawopt,htemp);
            }
 

            TGraph * drawGraph(TString xexpr, TString yexpr, const char *cut = "", TString drawopt = "AP", TGraph *graph = 0) {
                // prep the machinery
                helper::ScannerBase scanner(objType);
                scanner.setIgnoreExceptions(ignoreExceptions_);
                if (!scanner.addExpression((const char *)xexpr)) return 0;
                if (!scanner.addExpression((const char *)yexpr)) return 0;
                if (strlen(cut)) scanner.setCut(cut);

                // make graph, if needed
                if (graph == 0) {
                    htempDelete();
                    graph = new TGraph();
                    graph->SetNameTitle("htemp", (strlen(cut) ? yexpr+":"+xexpr+"{"+cut+"}" : yexpr+":"+xexpr)); 
                }

                // fill graph
                for (event_->toBegin(); !event_->atEnd(); ++(*event_)) {
                    if (!selectEvent(*event_)) continue;
                    handle_.getByLabel(*event_, label_.c_str(), instance_.c_str(), process_.c_str());
                    const std::vector<T> & vals = *handle_;
                    for (size_t j = 0, n = vals.size(); j < n; ++j) {
                        scanner.fillGraph(&vals[j], graph);
                    }
                }

                if (!strlen(graph->GetXaxis()->GetTitle())) graph->GetXaxis()->SetTitle(xexpr);
                if (!strlen(graph->GetYaxis()->GetTitle())) graph->GetYaxis()->SetTitle(yexpr);
                if (!TString(drawopt).Contains("goff",TString::kIgnoreCase)) graph->Draw(drawopt);
                return graph;
            }

            void setPrintFullEventId(bool printIt=true) { printFullEventId_ = printIt; }
            void setExpressionSeparator(TString separator) { exprSep_ = separator; }
            void setIgnoreExceptions(bool ignoreThem) { ignoreExceptions_ = ignoreThem; }
            void setMaxLinesToPrint(int lines) { maxLinesToPrint_ = (lines > 0 ? lines : 2147483647); }
    
            void addEventSelector(fwlite::EventSelector *selector) { eventSelectors_.Add(selector); }
            void clearEventSelector() { eventSelectors_.Clear(); }
            TObjArray & eventSelectors() { return eventSelectors_; }
            bool selectEvent(const fwlite::EventBase &ev) const {
                for (int i = 0, n = eventSelectors_.GetEntries(); i < n; ++i) {
                    if (!((fwlite::EventSelector *)(eventSelectors_[i]))->accept(ev)) return false;
                }
                return true;
            }
        private:
            fwlite::EventBase *event_;
            std::string    label_, instance_, process_;
            bool printFullEventId_;
            bool ignoreExceptions_;
            TString exprSep_;
            HandleT        handle_;
            Reflex::Type   objType;

            TObjArray eventSelectors_;

            int maxLinesToPrint_;
            bool wantMore() const {
                // ask if user wants more
                fprintf(stderr,"Type <CR> to continue or q to quit ==> ");
                // read first char
                int readch = getchar(), answer = readch;
                // poll out remaining chars from buffer
                while (readch != '\n' && readch != EOF) readch = getchar();
                // check first char
                return !(answer == 'q' || answer == 'Q');
            }

            void htempDelete() {
                if (gDirectory) {
                    TObject *obj = gDirectory->Get("htemp");
                    if (obj) obj->Delete();
                }
            }

    };
}
Revision:	1.7
Committed:	Thu Feb 4 10:53:26 2010 UTC (15 years, 3 months ago) by gpetrucc
Content type:	text/plain
Branch:	MAIN
Changes since 1.6:	+95 -14 lines
Log Message:	- "press <CR> to continue" in scan() - no more warning for existing histo "htemp" in draw - draw2d without range now works - added drawGraph
#	User	Rev	Content
1	gpetrucc	1.1	// these includes are FWLite-safe
2			#include "DataFormats/FWLite/interface/Handle.h"
3			#include "DataFormats/FWLite/interface/Event.h"
4			// these are from ROOT, so they're safe too
5			#include <TString.h>
6			#include <TObjString.h>
7			#include <TObjArray.h>
8	gpetrucc	1.7	#include <TDirectory.h>
9	gpetrucc	1.4	#include <TEnv.h>
10	gpetrucc	1.1
11			#if !defined(__CINT__) && !defined(__MAKECINT__)
12			#include "UserCode/GPetrucc/interface/fwliteHelpers.h"
13			#else
14	gpetrucc	1.6	#ifndef UserCode_GPetrucc_CINT_load_library
15			#define UserCode_GPetrucc_CINT_load_library
16	gpetrucc	1.1	// load the library that contains the dictionaries
17			int _load_UserCodeGPetrucc = gSystem->Load("libUserCodeGPetrucc.so");
18			#endif
19	gpetrucc	1.6	#endif
20
21			#include "UserCode/GPetrucc/interface/fwlite/EventSelectors.h"
22	gpetrucc	1.1
23			namespace fwlite {
24			template<typename T>
25			class Scanner {
26			public:
27			typedef fwlite::Handle<std::vector<T> > HandleT;
28			Scanner(fwlite::EventBase ev, const char label, const char instance = "", const char process="") :
29	gpetrucc	1.4	event_(ev), label_(label), instance_(instance),
30			printFullEventId_(ev->isRealData()),
31	gpetrucc	1.5	ignoreExceptions_(false),
32	gpetrucc	1.7	exprSep_(":"),
33			maxLinesToPrint_(50)
34	gpetrucc	1.1	{
35	gpetrucc	1.6	objType = helper::Parser::elementType(Reflex::Type::ByTypeInfo(HandleT::TempWrapT::typeInfo()));
36			eventSelectors_.SetOwner();
37	gpetrucc	1.1	}
38
39
40	gpetrucc	1.7	void scan(const char exprs, const char cut="", int nmax=-1) {
41	gpetrucc	1.1	helper::ScannerBase scanner(objType);
42	gpetrucc	1.5	scanner.setIgnoreExceptions(ignoreExceptions_);
43	gpetrucc	1.1
44	gpetrucc	1.4	TObjArray *exprArray = TString(exprs).Tokenize(exprSep_);
45	gpetrucc	1.1	int rowline = 0;
46			if (printFullEventId_) {
47			printf(" : %9s : %4s : %9s : %3s", "RUN", "LUMI", "EVENT", "#IT");
48			rowline += 3*4+9+4+9+3-1; // -1 as first char remain blank
49			} else {
50	gpetrucc	1.2	printf(" : %5s : %3s", "EVENT", "#IT");
51	gpetrucc	1.1	rowline += 3+6+3+3-1; // -1 as first char remain blank
52			}
53			for (int i = 0; i < exprArray->GetEntries(); ++i) {
54			const char ex = ((TObjString )(*exprArray)[i])->GetString();
55			scanner.addExpression(ex);
56	gpetrucc	1.3	printf(" : %8s", (strlen(ex)>8 ? ex+strlen(ex)-8 : ex)); // the rightmost part is usually the more interesting one
57	gpetrucc	1.1	rowline += 3+8;
58			}
59			std::cout << " :" << std::endl;
60			rowline += 2;
61			delete exprArray;
62
63			TString rule('-', rowline);
64			std::cout << " " << rule << " " << std::endl;
65
66			if (strlen(cut)) scanner.setCut(cut);
67
68	gpetrucc	1.7	int iev = 0, line = 0;
69	gpetrucc	1.6	for (event_->toBegin(); (iev != nmax) && !event_->atEnd(); ++iev, ++(*event_)) {
70			if (!selectEvent(*event_)) continue;
71	gpetrucc	1.1	handle_.getByLabel(*event_, label_.c_str(), instance_.c_str(), process_.c_str());
72			const std::vector<T> & vals = *handle_;
73			for (size_t j = 0, n = vals.size(); j < n; ++j) {
74			if (!scanner.test(&vals[j])) continue;
75			if (printFullEventId_) {
76			const edm::EventAuxiliary &id = event_->eventAuxiliary();
77			printf(" : %9d : %4d : %9d : %3d", id.run(), id.luminosityBlock(), id.event(), j);
78			} else {
79			printf(" : %5d : %3d", iev, j);
80			}
81			scanner.print(&vals[j]);
82			std::cout << " :" << std::endl;
83	gpetrucc	1.7	if (++line == maxLinesToPrint_) {
84			line = 0;
85			if (!wantMore()) {
86			iev = nmax-1; // this is to exit the outer loop
87			break; // and this to exit the inner one
88			}
89			}
90	gpetrucc	1.1	}
91			}
92			std::cout << std::endl;
93			}
94	gpetrucc	1.7
95	gpetrucc	1.4	TH1 * draw(const char expr, const char cut = "", TString drawopt = "", TH1 *hist = 0) {
96			// prep the machinery
97			helper::ScannerBase scanner(objType);
98	gpetrucc	1.5	scanner.setIgnoreExceptions(ignoreExceptions_);
99	gpetrucc	1.7	if (!scanner.addExpression(expr)) return 0;
100	gpetrucc	1.4	if (strlen(cut)) scanner.setCut(cut);
101
102			// make histo, if needed
103			if (hist == 0) {
104	gpetrucc	1.7	htempDelete();
105	gpetrucc	1.4	hist = new TH1F("htemp",
106			(strlen(cut) ? TString(expr)+"{"+cut+"}" : TString(expr)),
107			gEnv->GetValue("Hist.Binning.1D.x",100), 0, 0);
108			hist->SetBit(TH1::kCanRebin);
109			}
110
111			// fill histogram
112			for (event_->toBegin(); !event_->atEnd(); ++(*event_)) {
113	gpetrucc	1.6	if (!selectEvent(*event_)) continue;
114	gpetrucc	1.4	handle_.getByLabel(*event_, label_.c_str(), instance_.c_str(), process_.c_str());
115			const std::vector<T> & vals = *handle_;
116			for (size_t j = 0, n = vals.size(); j < n; ++j) {
117			scanner.fill1D(&vals[j], hist);
118			}
119			}
120
121			if (!TString(drawopt).Contains("goff",TString::kIgnoreCase)) hist->Draw(drawopt);
122			return hist;
123			}
124			TH1 * draw(const char expr, int bins, double xlow, double xhigh, const char cut = "", const char *drawopt = "") {
125	gpetrucc	1.7	htempDelete();
126	gpetrucc	1.4	TH1 * htemp = new TH1F("htemp", (strlen(cut) ? TString(expr)+"{"+cut+"}" : TString(expr)), bins, xlow, xhigh);
127			return draw(expr,cut,drawopt,htemp);
128			}
129
130			TProfile * drawProf(TString xexpr, TString yexpr, const char cut = "", TString drawopt = "", TProfile hist = 0) {
131			// prep the machinery
132			helper::ScannerBase scanner(objType);
133	gpetrucc	1.5	scanner.setIgnoreExceptions(ignoreExceptions_);
134	gpetrucc	1.7	if (!scanner.addExpression(xexpr)) return 0;
135			if (!scanner.addExpression(yexpr)) return 0;
136	gpetrucc	1.4	if (strlen(cut)) scanner.setCut(cut);
137
138			// make histo, if needed
139			if (hist == 0) {
140	gpetrucc	1.7	htempDelete();
141	gpetrucc	1.4	hist = new TProfile("htemp",
142			(strlen(cut) ? yexpr+":"+xexpr+"{"+cut+"}" : yexpr+":"+xexpr),
143			gEnv->GetValue("Hist.Binning.1D.x",100), 0., 0.);
144			hist->SetBit(TH1::kCanRebin);
145			}
146
147			// fill histogram
148			for (event_->toBegin(); !event_->atEnd(); ++(*event_)) {
149	gpetrucc	1.6	if (!selectEvent(*event_)) continue;
150	gpetrucc	1.4	handle_.getByLabel(*event_, label_.c_str(), instance_.c_str(), process_.c_str());
151			const std::vector<T> & vals = *handle_;
152			for (size_t j = 0, n = vals.size(); j < n; ++j) {
153			scanner.fillProf(&vals[j], hist);
154			}
155			}
156
157			if (!TString(drawopt).Contains("goff",TString::kIgnoreCase)) hist->Draw(drawopt);
158			return hist;
159			}
160			TProfile * drawProf(TString xexpr, int bins, double xlow, double xhigh, TString yexpr, const char cut = "", const char drawopt = "") {
161	gpetrucc	1.7	htempDelete();
162	gpetrucc	1.4	TProfile * htemp = new TProfile("htemp", (strlen(cut) ? yexpr+":"+xexpr+"{"+cut+"}" : yexpr+":"+xexpr), bins, xlow, xhigh);
163			return drawProf(xexpr,yexpr,cut,drawopt,htemp);
164			}
165
166			TH2 * draw2D(TString xexpr, TString yexpr, const char cut = "", TString drawopt = "", TH2 hist = 0) {
167			// prep the machinery
168			helper::ScannerBase scanner(objType);
169	gpetrucc	1.5	scanner.setIgnoreExceptions(ignoreExceptions_);
170	gpetrucc	1.7	if (!scanner.addExpression((const char *)xexpr)) return 0;
171			if (!scanner.addExpression((const char *)yexpr)) return 0;
172	gpetrucc	1.4	if (strlen(cut)) scanner.setCut(cut);
173
174			// make histo, if needed
175			if (hist == 0) {
176	gpetrucc	1.7	// ok this is much more a hack than for the 1D case
177			double xmin = 0, xmax = -1, ymin = 0, ymax = -1;
178			for (event_->toBegin(); !event_->atEnd(); ++(*event_)) {
179			if (!selectEvent(*event_)) continue;
180			handle_.getByLabel(*event_, label_.c_str(), instance_.c_str(), process_.c_str());
181			const std::vector<T> & vals = *handle_;
182			for (size_t j = 0, n = vals.size(); j < n; ++j) {
183			if (!scanner.test(&vals[j])) continue;
184			double x = scanner.eval(&vals[j],0);
185			double y = scanner.eval(&vals[j],1);
186			if ((xmax == -1) \|\| (x >= xmax)) xmax = x;
187			if ((xmin == 0) \|\| (x <= xmin)) xmin = x;
188			if ((ymax == -1) \|\| (y >= ymax)) ymax = y;
189			if ((ymin == 0) \|\| (y <= ymin)) ymin = y;
190			}
191			}
192			htempDelete();
193	gpetrucc	1.4	hist = new TH2F("htemp",
194			(strlen(cut) ? yexpr+":"+xexpr+"{"+cut+"}" : yexpr+":"+xexpr),
195	gpetrucc	1.7	gEnv->GetValue("Hist.Binning.2D.x",20), xmin, xmax,
196			gEnv->GetValue("Hist.Binning.2D.y",20), ymin, ymax);
197	gpetrucc	1.4	}
198
199			// fill histogram
200			for (event_->toBegin(); !event_->atEnd(); ++(*event_)) {
201	gpetrucc	1.6	if (!selectEvent(*event_)) continue;
202	gpetrucc	1.4	handle_.getByLabel(*event_, label_.c_str(), instance_.c_str(), process_.c_str());
203			const std::vector<T> & vals = *handle_;
204			for (size_t j = 0, n = vals.size(); j < n; ++j) {
205			scanner.fill2D(&vals[j], hist);
206			}
207			}
208
209			if (!strlen(hist->GetXaxis()->GetTitle())) hist->GetXaxis()->SetTitle(xexpr);
210			if (!strlen(hist->GetYaxis()->GetTitle())) hist->GetYaxis()->SetTitle(yexpr);
211			if (!TString(drawopt).Contains("goff",TString::kIgnoreCase)) hist->Draw(drawopt);
212			return hist;
213			}
214			TH2 * draw2D(TString xexpr, int xbins, double xlow, double xhigh,
215			TString yexpr, int ybins, double ylow, double yhigh,
216			const char cut = "", const char drawopt = "") {
217	gpetrucc	1.7	htempDelete();
218	gpetrucc	1.4	TH2 * htemp = new TH2F("htemp", (strlen(cut) ? yexpr+":"+xexpr+"{"+cut+"}" : yexpr+":"+xexpr),
219			xbins, xlow, xhigh, ybins,ylow,yhigh);
220			return draw2D(xexpr,yexpr,cut,drawopt,htemp);
221			}
222
223	gpetrucc	1.7
224			TGraph * drawGraph(TString xexpr, TString yexpr, const char cut = "", TString drawopt = "AP", TGraph graph = 0) {
225			// prep the machinery
226			helper::ScannerBase scanner(objType);
227			scanner.setIgnoreExceptions(ignoreExceptions_);
228			if (!scanner.addExpression((const char *)xexpr)) return 0;
229			if (!scanner.addExpression((const char *)yexpr)) return 0;
230			if (strlen(cut)) scanner.setCut(cut);
231
232			// make graph, if needed
233			if (graph == 0) {
234			htempDelete();
235			graph = new TGraph();
236			graph->SetNameTitle("htemp", (strlen(cut) ? yexpr+":"+xexpr+"{"+cut+"}" : yexpr+":"+xexpr));
237			}
238
239			// fill graph
240			for (event_->toBegin(); !event_->atEnd(); ++(*event_)) {
241			if (!selectEvent(*event_)) continue;
242			handle_.getByLabel(*event_, label_.c_str(), instance_.c_str(), process_.c_str());
243			const std::vector<T> & vals = *handle_;
244			for (size_t j = 0, n = vals.size(); j < n; ++j) {
245			scanner.fillGraph(&vals[j], graph);
246			}
247			}
248
249			if (!strlen(graph->GetXaxis()->GetTitle())) graph->GetXaxis()->SetTitle(xexpr);
250			if (!strlen(graph->GetYaxis()->GetTitle())) graph->GetYaxis()->SetTitle(yexpr);
251			if (!TString(drawopt).Contains("goff",TString::kIgnoreCase)) graph->Draw(drawopt);
252			return graph;
253			}
254
255	gpetrucc	1.1	void setPrintFullEventId(bool printIt=true) { printFullEventId_ = printIt; }
256	gpetrucc	1.4	void setExpressionSeparator(TString separator) { exprSep_ = separator; }
257	gpetrucc	1.5	void setIgnoreExceptions(bool ignoreThem) { ignoreExceptions_ = ignoreThem; }
258	gpetrucc	1.7	void setMaxLinesToPrint(int lines) { maxLinesToPrint_ = (lines > 0 ? lines : 2147483647); }
259
260	gpetrucc	1.6	void addEventSelector(fwlite::EventSelector *selector) { eventSelectors_.Add(selector); }
261			void clearEventSelector() { eventSelectors_.Clear(); }
262			TObjArray & eventSelectors() { return eventSelectors_; }
263			bool selectEvent(const fwlite::EventBase &ev) const {
264			for (int i = 0, n = eventSelectors_.GetEntries(); i < n; ++i) {
265			if (!((fwlite::EventSelector *)(eventSelectors_[i]))->accept(ev)) return false;
266			}
267			return true;
268			}
269	gpetrucc	1.1	private:
270	gpetrucc	1.2	fwlite::EventBase *event_;
271			std::string label_, instance_, process_;
272	gpetrucc	1.1	bool printFullEventId_;
273	gpetrucc	1.5	bool ignoreExceptions_;
274	gpetrucc	1.4	TString exprSep_;
275	gpetrucc	1.1	HandleT handle_;
276	gpetrucc	1.4	Reflex::Type objType;
277	gpetrucc	1.1
278	gpetrucc	1.6	TObjArray eventSelectors_;
279
280	gpetrucc	1.7	int maxLinesToPrint_;
281			bool wantMore() const {
282			// ask if user wants more
283			fprintf(stderr,"Type <CR> to continue or q to quit ==> ");
284			// read first char
285			int readch = getchar(), answer = readch;
286			// poll out remaining chars from buffer
287			while (readch != '\n' && readch != EOF) readch = getchar();
288			// check first char
289			return !(answer == 'q' \|\| answer == 'Q');
290			}
291
292			void htempDelete() {
293			if (gDirectory) {
294			TObject *obj = gDirectory->Get("htemp");
295			if (obj) obj->Delete();
296			}
297			}
298
299	gpetrucc	1.1	};
300			}