2 * Script to draw the energy loss fits from the output file of
3 * AliFMDELossFitter(Task).
6 * @ingroup pwg2_forward_scripts_corr
19 //____________________________________________________________________
23 const char* pdfName = "FitResults.pdf";
25 //____________________________________________________________________
27 * Open a file. The file is expected to contain the directory
45 * | +- FMD1I_edist (TH1)
50 * @param fname File to open
52 * @return Pointer to the list of objects
54 * @ingroup pwg2_forward_scripts_corr
56 TList* OpenFile(const char* fname)
58 TFile* file = TFile::Open(fname, "READ");
60 Error("DrawFits", "Couldn't open %s", fname);
64 TList* forward = static_cast<TList*>(file->Get("ForwardResults"));
65 // static_cast<TList*>(file->Get("PWG2forwardDnDeta/Forward"));
67 Error("DrawFits", "Couldn't get forward list from %s", fname);
71 fitter = static_cast<TList*>(forward->FindObject("fmdEnergyFitter"));
73 Error("DrawFits", "Couldn't get fitter folder");
78 //____________________________________________________________________
80 * Open file if not done already
82 * @param fname File to open
84 * @return List of fits
86 * @ingroup pwg2_forward_scripts_corr
88 TList* CheckFitter(const char* fname="AnalysisResults.root")
90 if (!fitter) return OpenFile(fname);
94 //____________________________________________________________________
96 * Make canvas if not done already
101 * @ingroup pwg2_forward_scripts_corr
103 TCanvas* CheckCanvas()
105 if (canvas) return canvas;
107 gStyle->SetOptFit(111111);
108 gStyle->SetTitleFillColor(0);
109 gStyle->SetTitleBorderSize(0);
110 gStyle->SetTitleX(0);
111 gStyle->SetTitleY(.9);
112 gStyle->SetTitleW(.4);
113 gStyle->SetTitleH(.1);
114 gStyle->SetStatW(0.2);
115 gStyle->SetStatH(0.2);
116 gStyle->SetStatColor(0);
117 gStyle->SetStatBorderSize(1);
118 gStyle->SetOptTitle(0);
119 gStyle->SetOptFit(1111);
120 gStyle->SetStatW(0.3);
121 gStyle->SetStatH(0.15);
122 gStyle->SetStatColor(0);
123 gStyle->SetStatBorderSize(1);
125 canvas = new TCanvas("c", "C", Int_t(800 / TMath::Sqrt(2)), 800);
126 canvas->SetFillColor(0);
127 canvas->SetBorderMode(0);
128 canvas->SetBorderSize(0);
129 canvas->SetBottomMargin(0.15);
133 //____________________________________________________________________
134 void CleanStack(THStack* stack)
136 TIter next(stack->GetHists());
138 while ((o = next())) {
139 TString name(o->GetName());
140 if (name.Contains("_t_"))
141 stack->RecursiveRemove(o);
146 //____________________________________________________________________
148 AddToStack(TList* stacks, TList* fitter, const char* name)
150 TObject* o = fitter->FindObject(name);
152 Warning("AddToStack", "Object %s not found in %s", name,
157 THStack* toAdd = static_cast<THStack*>(o);
159 Info("AddToStack", "Adding %s to stacks", name);
165 //____________________________________________________________________
171 * @ingroup pwg2_forward_scripts_corr
173 void DrawSummary(const char* fname="forward_eloss.root")
175 if (!CheckFitter(fname)) {
176 Error("DrawFits", "File not opened");
179 if (!CheckCanvas()) {
180 Error("DrawFits", "No canvas");
186 THStack* chi2nu = AddToStack(&stacks, fitter, "chi2");
187 THStack* c = AddToStack(&stacks, fitter, "c");
188 THStack* delta = AddToStack(&stacks, fitter, "delta");
189 THStack* xi = AddToStack(&stacks, fitter, "xi");
190 THStack* sigma = AddToStack(&stacks, fitter, "sigma");
191 THStack* sigman = AddToStack(&stacks, fitter, "sigman");
192 THStack* n = AddToStack(&stacks, fitter, "n");
193 Int_t baseA = stacks.GetEntries()+1;
196 if (!AddToStack(&stacks, fitter, Form("a%d",i++)))
200 Int_t nMax = stacks.GetEntries();
201 for (Int_t i = nMax-1; i >= baseA; i--) {
202 THStack* stack = static_cast<THStack*>(stacks.At(i));
203 TIter nextH(stack->GetHists());
205 Bool_t hasData = kFALSE;
206 while ((hist = static_cast<TH1*>(nextH())))
207 if (hist->Integral() > 0) hasData = kTRUE;
208 if (!hasData) nMax--;
211 canvas->SetRightMargin(0.01);
212 canvas->SetTopMargin(0.01);
214 Int_t nY = (nMax+1) / 2;
215 canvas->Divide(nX, nY, 0.1, 0, 0);
221 while ((stack = static_cast<THStack*>(next()))) {
223 Int_t ipad = 1+i/nY + 2 * (i % nY);
224 Info("DrawSummary", "cd'ing to canvas %d for %s", ipad,
226 TVirtualPad* p = canvas->cd(ipad);
227 p->SetLeftMargin(.6/nY);
228 p->SetTopMargin(.01);
229 p->SetRightMargin(.01);
233 stack->Draw("nostack");
234 stack->GetHistogram()->SetYTitle(stack->GetTitle());
235 stack->GetHistogram()->SetXTitle("#eta");
237 TAxis* yaxis = stack->GetHistogram()->GetYaxis();
238 if (i == 0) yaxis->SetRangeUser(0,20); // Chi2
239 if (i == 1) stack->SetMaximum(1); // c
240 if (i == 2) stack->SetMaximum(1); // delta
241 if (i == 3) stack->SetMaximum(0.1); // xi
242 if (i == 4 || i == 5) stack->SetMaximum(0.5); // sigma{,n}
243 if (i == 7) stack->SetMaximum(0.5); // a
244 if (i == 0) p->SetLogy();
245 yaxis->SetTitleSize(0.3/nY);
246 yaxis->SetLabelSize(0.08);
247 yaxis->SetTitleOffset(2.5/nY);
248 yaxis->SetNdivisions(5);
249 yaxis->SetTitleFont(42);
250 yaxis->SetLabelFont(42);
251 yaxis->SetDecimals();
253 TAxis* xaxis = stack->GetHistogram()->GetXaxis();
254 xaxis->SetTitleSize(0.3/nY);
255 xaxis->SetLabelSize(0.08);
256 xaxis->SetTitleOffset(2./nY);
257 xaxis->SetNdivisions(10);
258 xaxis->SetTitleFont(42);
259 xaxis->SetLabelFont(42);
260 xaxis->SetDecimals();
263 stack->Draw("nostack");
268 canvas->SaveAs("fit_results.png");
269 canvas->Print(pdfName, "Title:Fit summary");
272 //____________________________________________________________________
278 * @ingroup pwg2_forward_scripts_corr
280 void DrawRings(const char* fname="AnalysisResults.root")
282 if (!CheckFitter(fname)) {
283 Error("DrawFits", "File not opened");
286 if (!CheckCanvas()) {
287 Error("DrawFits", "No canvas");
293 canvas->Divide(1, 5,0,0);
295 const char* dets[] = { "FMD1I", "FMD2I", "FMD2O", "FMD3I", "FMD3O", 0 };
296 for (Int_t i = 0; i < 5; i++) {
297 TVirtualPad* p = canvas->cd(i+1);
302 TList* d = static_cast<TList*>(fitter->FindObject(dets[i]));
304 Warning("DrawFits", "List %s not found", dets[i]);
307 TH1* edist = static_cast<TH1*>(d->FindObject(Form("%s_edist", dets[i])));
309 Warning("DrawFits", "Histogram %s_edist not found", dets[i]);
314 TIter nextF(edist->GetListOfFunctions());
315 while ((f = static_cast<TF1*>(nextF()))) {
316 Double_t chi2 = f->GetChisquare();
317 Int_t ndf = f->GetNDF();
318 Printf("%s %s:\n Range: %f-%f\n"
319 "chi^2/ndf= %f / %d = %f",
320 edist->GetName(), f->GetName(),
321 f->GetXmin(), f->GetXmax(), chi2, ndf,
322 (ndf > 0) ? chi2/ndf : 0);
323 for (Int_t j = 0; j < f->GetNpar(); j++) {
324 Printf(" %-20s : %9.4f +/- %9.4f",
325 f->GetParName(j), f->GetParameter(j), f->GetParError(j));
331 canvas->Print(pdfName, "Title:Fit to rings");
334 //____________________________________________________________________
336 * Draw fits in eta bins
340 * @ingroup pwg2_forward_scripts_corr
342 void DrawEtaBins(const char* fname="AnalysisResults.root")
344 if (!CheckFitter(fname)) {
345 Error("DrawFits", "File not opened");
348 if (!CheckCanvas()) {
349 Error("DrawFits", "No canvas");
353 canvas->Divide(2,2,0,0);
355 for (UShort_t d=1; d<=3; d++) {
356 UShort_t nQ = (d == 1 ? 1 : 2);
357 for (UShort_t q = 0; q < nQ; q++) {
358 Char_t r = (q == 0 ? 'I' : 'O');
361 static_cast<TList*>(fitter->FindObject(Form("FMD%d%c",d,r)));
363 Error("PrintFits", "Couldn't get ring FMD%d%c", d,r);
366 TList* edists = static_cast<TList*>(ring->FindObject("EDists"));
368 Error("PrintFits", "Couldn't get EDists list for FMD%d%c", d,r);
372 Info("DrawEtaBins", "Drawing for FMD%d%c", d, r);
377 while ((dist = static_cast<TH1*>(next()))) {
378 Info("DrawEtaBins", "FMD%d%c: %s", d, r, dist->GetName());
382 canvas->Print(pdfName, Form("Title:FMD%d%c page %2d", d,r,j));
384 TVirtualPad* p = canvas->cd(++i);
385 p->SetFillColor(kWhite);
389 dist->SetMaximum(15);
395 for (; i <= 4; i++) {
396 TVirtualPad* p = canvas->cd(i);
398 p->SetFillColor(kMagenta-3);
402 canvas->Print(pdfName, Form("FMD%d%c page %2d", d,r,j++));
408 //____________________________________________________________________
410 * Draw energy loss fits to a multi-page PDF
412 * The input file is the result of running AliFMDELossFitter -
413 * either directly via AliFMDELossFitterTask or as part of a larger
414 * train (AliForwardMultiplicityTask or AliForwardMCMultiplicityTask).
425 * +- sigman (THStack)
431 * | +- FMD1I_edist (TH1)
432 * | +- EDists (TList)
438 * @ingroup pwg2_forward_scripts_corr
441 DrawAnaELoss(const char* fname="forward_eloss.root", bool onlySummary=true)
443 if (!CheckCanvas()) {
444 Error("DrawFits", "No canvas");
447 if (!onlySummary) canvas->Print(Form("%s[", pdfName));
449 if (onlySummary) return;
452 canvas->Print(Form("%s]", pdfName));