Minor syntax for the Alpha OSF
[u/mrichter/AliRoot.git] / TPC / AliTPCPRF2D.cxx
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4c039060 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
15
16/*
17$Log$
0b34885d 18Revision 1.2 1999/09/29 09:24:34 fca
19Introduction of the Copyright and cvs Log
20
4c039060 21*/
22
8c555625 23///////////////////////////////////////////////////////////////////////////////
24// AliTPCPRF2D - //
25// Pad response function object in two dimesions //
26// This class contains the basic functions for the //
27// calculation of PRF according generic charge distribution //
28// In Update function object calculate table of response function //
29// in discrete x and y position //
30// This table is used for interpolation od response function in any position //
31// (function GetPRF) //
32// //
33// Origin: Marian Ivanov, Uni. of Bratislava, ivanov@fmph.uniba.sk //
34// //
35///////////////////////////////////////////////////////////////////////////////
36#include "TMath.h"
37#include "AliTPCPRF2D.h"
38#include "TF2.h"
39#include <iostream.h>
40#include <string.h>
41#include "TCanvas.h"
42#include "TPad.h"
43#include "TStyle.h"
44#include "TH1.h"
45#include "TH2.h"
46#include "TPaveText.h"
47#include "TText.h"
48
49extern TStyle * gStyle;
50
51static const Float_t sqrt12=3.46;
52static const Int_t NPRF = 100;
53
54
55static Double_t funGauss2D(Double_t *x, Double_t * par)
56{
57 return ( TMath::Exp(-(x[0]*x[0])/(2*par[0]*par[0]))*
58 TMath::Exp(-(x[1]*x[1])/(2*par[1]*par[1])));
59
60}
61
62static Double_t funCosh2D(Double_t *x, Double_t * par)
63{
64 return ( 1/(TMath::CosH(3.14159*x[0]/(2*par[0]))*
65 TMath::CosH(3.14159*x[1]/(2*par[1]))));
66}
67
68static Double_t funGati2D(Double_t *x, Double_t * par)
69{
70 //par[1] = is equal to k3X
71 //par[0] is equal to pad wire distance
72 Float_t K3=par[1];
73 Float_t K3R=TMath::Sqrt(K3);
74 Float_t K2=(TMath::Pi()/2)*(1-K3R/2.);
75 Float_t K1=K2*K3R/(4*TMath::ATan(K3R));
76 Float_t l=x[0]/par[0];
77 Float_t tan2=TMath::TanH(K2*l);
78 tan2*=tan2;
79 Float_t res = K1*(1-tan2)/(1+K3*tan2);
80 //par[4] = is equal to k3Y
81 K3=par[4];
82 K3R=TMath::Sqrt(K3);
83 K2=(TMath::Pi()/2)*(1-K3R/2.);
84 K1=K2*K3R/(4*TMath::ATan(K3R));
85 l=x[1]/par[0];
86 tan2=TMath::TanH(K2*l);
87 tan2*=tan2;
88 res = res*K1*(1-tan2)/(1+K3*tan2);
89 return res;
90}
91
92
93///////////////////////////////////////////////////////////////////////////
94///////////////////////////////////////////////////////////////////////////
95///////////////////////////////////////////////////////////////////////////
96///////////////////////////////////////////////////////////////////////////
97
98ClassImp(AliTPCPRF2D)
99
100AliTPCPRF2D::AliTPCPRF2D()
101{
102 ffcharge = 0;
103 fNPRF =NPRF ;
104 fSigmaX = 0;
105
106 fGRF = 0;
107 fkNorm = 1;
108 forigsigmaY=0;
109 forigsigmaX=0;
110 fNdiv = 5;
111 //chewron default values
112 SetPad(0.8,0.8);
113 SetChevron(0.2,0.0,1.0);
114 SetY(-0.2,0.2,2);
115 // SetGauss(0.22,0.22,1);
116}
117
118AliTPCPRF2D::~AliTPCPRF2D()
119{
120 if (ffcharge!=0) delete [] ffcharge;
121 if (fGRF !=0 ) fGRF->Delete();
122}
123
124void AliTPCPRF2D::SetY(Float_t y1, Float_t y2, Int_t nYdiv)
125{
126 //
127 //set virtual line position
128 //first and last line and number of lines
129 fNYdiv = nYdiv;
130 if (ffcharge!=0) delete [] ffcharge;
131 ffcharge = new Float_t[fNPRF*fNYdiv];
132 fY1=y1;
133 fY2=y2;
134}
135
136void AliTPCPRF2D::SetPad(Float_t width, Float_t height)
137{
138 //set base chevron parameters
139 fHeightFull=height;
140 fWidth=width;
141}
142void AliTPCPRF2D::SetChevron(Float_t hstep,
143 Float_t shifty,
144 Float_t fac)
145{
146 //set shaping of chewron parameters
147 fHeightS=hstep;
148 fShiftY=shifty;
149 fK=fWidth*fac/hstep;
150}
151
152void AliTPCPRF2D::SetChParam(Float_t width, Float_t height,
153 Float_t hstep, Float_t shifty, Float_t fac)
154{
155 SetPad(width,height);
156 SetChevron(hstep,shifty,fac);
157}
158
159
160Float_t AliTPCPRF2D::GetPRF(Float_t xin, Float_t yin, Bool_t inter)
161{
162 if (ffcharge==0) return 0;
163 // Float_t y=Float_t(fNYdiv-1)*(yin-fY1)/(fY2-fY1);
164 //transform position to "wire position"
165 Float_t y=fDYtoWire*(yin-fY1);
166 if (fNYdiv == 1) y=fY1;
167 //normaly it find nearest line charge
168 if (inter ==kFALSE){
169 Int_t i=Int_t(0.5+y);
170 if (y<0) i=Int_t(-0.5+y);
171 if ((i<0) || (i>=fNYdiv) ) return 0;
172 fcharge = &(ffcharge[i*fNPRF]);
173 return GetPRFActiv(xin);
174 }
175 else{
176 //make interpolation from more fore lines
177 Int_t i= Int_t(y);
178 if ((i<0) || (i>=fNYdiv) ) return 0;
179 Float_t z0=0;
180 Float_t z1=0;
181 Float_t z2=0;
182 Float_t z3=0;
183 if (i>0) {
184 fcharge =&(ffcharge[(i-1)*fNPRF]);
185 z0 = GetPRFActiv(xin);
186 }
187 fcharge =&(ffcharge[i*fNPRF]);
188 z1=GetPRFActiv(xin);
189 if ((i+1)<fNYdiv){
190 fcharge =&(ffcharge[(i+1)*fNPRF]);
191 z2 = GetPRFActiv(xin);
192 }
193 if ((i+2)<fNYdiv){
194 fcharge =&(ffcharge[(i+2)*fNPRF]);
195 z3 = GetPRFActiv(xin);
196 }
197 Float_t a,b,c,d,K,L;
198 a=z1;
199 b=(z2-z0)/2.;
200 K=z2-a-b;
201 L=(z3-z1)/2.-b;
202 d=L-2*K;
203 c=K-d;
204 Float_t dy=y-Float_t(i);
205 Float_t res = a+b*dy+c*dy*dy+d*dy*dy*dy;
206 //Float_t res = z1*(1-dy)+z2*dy;
207 return res;
208 }
8c555625 209}
210
211
212Float_t AliTPCPRF2D::GetPRFActiv(Float_t xin)
213{
214 //x xin DStep unit
215 //return splaine aproximaton
216 Float_t x = (xin*fDStepM1)+fNPRF/2;
217 Int_t i = Int_t(x);
218
219 if ( (i>0) && ((i+2)<fNPRF)) {
220 Float_t a,b,c,d,K,L;
221 a = fcharge[i];
222 b = (fcharge[i+1]-fcharge[i-1])*0.5;
223 K = fcharge[i+1]-a-b;
224 L = (fcharge[i+2]-fcharge[i])*0.5-b;
225 d=L-2.*K;
226 c=K-d;
227 Float_t dx=x-Float_t(i);
228 Float_t res = a+b*dx+c*dx*dx+d*dx*dx*dx;
229 return res;
230 }
231 else return 0;
232}
233
234
235Float_t AliTPCPRF2D::GetGRF(Float_t xin, Float_t yin)
236{
237 if (fGRF != 0 )
238 return fkNorm*fGRF->Eval(xin,yin)/fInteg;
239 else
240 return 0.;
241}
242
243
244void AliTPCPRF2D::SetParam( TF2 * GRF, Float_t kNorm,
245 Float_t sigmaX, Float_t sigmaY)
246{
247 if (fGRF !=0 ) fGRF->Delete();
248 fGRF = GRF;
249 fkNorm = kNorm;
250 if (sigmaX ==0) sigmaX=(fWidth+fK*fHeightS)/sqrt12;
251 if (sigmaY ==0) sigmaY=(fWidth+fK*fHeightS)/sqrt12;
252 forigsigmaX=sigmaX;
253 forigsigmaY=sigmaY;
254 fDStep = TMath::Sqrt(sigmaX*sigmaX+fWidth*fWidth/6.)/10.;
255 // Update();
256 sprintf(fType,"User");
257}
258
259
260void AliTPCPRF2D::SetGauss(Float_t sigmaX, Float_t sigmaY,
261 Float_t kNorm)
262{
263 fkNorm = kNorm;
264 if (fGRF !=0 ) fGRF->Delete();
265 fGRF = new TF2("fun",funGauss2D,-5.,5.,-5.,5.,4);
266 funParam[0]=sigmaX;
267 funParam[1]=sigmaY;
268 funParam[2]=fK;
269 funParam[3]=fHeightS;
270 forigsigmaX=sigmaX;
271 forigsigmaY=sigmaY;
272 fGRF->SetParameters(funParam);
273 fDStep = TMath::Sqrt(sigmaX*sigmaX+fWidth*fWidth/6.)/10.;
274 //by default I set the step as one tenth of sigma
275 //Update();
276 sprintf(fType,"Gauss");
277}
278
279void AliTPCPRF2D::SetCosh(Float_t sigmaX, Float_t sigmaY,
280 Float_t kNorm)
281{
282 fkNorm = kNorm;
283 if (fGRF !=0 ) fGRF->Delete();
284 fGRF = new TF2("fun", funCosh2D,-5.,5.,-5.,5.,4);
285 funParam[0]=sigmaX;
286 funParam[1]=sigmaY;
287 funParam[2]=fK;
288 funParam[3]=fHeightS;
289 fGRF->SetParameters(funParam);
290 forigsigmaX=sigmaX;
291 forigsigmaY=sigmaY;
292 fDStep = TMath::Sqrt(sigmaX*sigmaX+fWidth*fWidth/6.)/10.;
293 //by default I set the step as one tenth of sigma
294 //Update();
295 sprintf(fType,"Cosh");
296}
297
298void AliTPCPRF2D::SetGati(Float_t K3X, Float_t K3Y,
299 Float_t padDistance,
300 Float_t kNorm)
301{
302 fkNorm = kNorm;
303 if (fGRF !=0 ) fGRF->Delete();
304 fGRF = new TF2("fun", funGati2D,-5.,5.,-5.,5.,5);
305 fK3X=K3X;
306 fK3Y=K3Y;
307 fPadDistance=padDistance;
308 funParam[0]=padDistance;
309 funParam[1]=K3X;
310 funParam[2]=fK;
311 funParam[3]=fHeightS;
312 funParam[4]=K3Y;
313 fGRF->SetParameters(funParam);
314 forigsigmaX=padDistance;
315 forigsigmaY=padDistance;
316 fDStep = TMath::Sqrt(padDistance*padDistance+fWidth*fWidth/6.)/10.;
317 //by default I set the step as one tenth of sigma
318 //Update();
319 sprintf(fType,"Gati");
320}
321
322
323
324void AliTPCPRF2D::Update()
325{
326 for (Int_t i=0; i<fNYdiv; i++){
327 if (fNYdiv == 1) fActualY = fY1;
328 else
329 fActualY = fY1+Float_t(i)*(fY2-fY1)/Float_t(fNYdiv-1);
330 fcharge = &(ffcharge[i*fNPRF]);
331 Update1();
332 }
333}
334
335
336
337void AliTPCPRF2D::Update1()
338{
339 //initialize to 0
340
341
342 Int_t i;
343 Float_t x;
344 for (i =0; i<fNPRF;i++) fcharge[i] = 0;
345 if ( fGRF == 0 ) return;
346 ////////////////////////////////////////////////////////
347 //I'm waiting for normal integral
348 //in this moment only sum
349 Float_t x2= 4*forigsigmaX;
350 Float_t y2= 4*forigsigmaY;
351 Float_t dx = forigsigmaX/Float_t(fNdiv*6);
352 Float_t dy = forigsigmaY/Float_t(fNdiv*6);
353 fInteg = 0;
354 for (x=0.;x<x2;x+=dx)
355 for (Float_t y=0;y<y2;y+=dy) fInteg+=fGRF->Eval(x,y)*dx*dy;
356 fInteg*=4;
357 /////////////////////////////////////////////////////
358
359
360 if ( fInteg == 0 ) fInteg = 1;
361
362 //integrate charge over pad for different distance of pad
363 for (i =0; i<fNPRF;i++)
364 { //x in cm fWidth in cm
365 //calculate integral
366 Float_t xch = fDStep * (Float_t)(i-fNPRF/2);
367 Float_t k=1;
368 fcharge[i]=0;
369 for (Float_t y=-fHeightFull/2.-fShiftY;
370 y<fHeightFull/2.;y+=fHeightS){
371 Float_t y2=TMath::Min((y+fHeightS),Float_t(fHeightFull/2.));
372 Float_t y1=TMath::Max((y),Float_t(-fHeightFull/2.));
373 Float_t x1;
374
375 if (k>0)
376 x1 = (y2-y1)*fK-(fWidth+fK*fHeightS)/2.;
377 else
378 x1 =-(fWidth+fK*fHeightS)/2. ;
379 Float_t x2=x1+fWidth;
380
381 if (y2>y1) {
382
383 if ((x2-x1)*fNdiv<forigsigmaX) dx=(x2-x1);
384 else{
385 dx= forigsigmaX/Float_t(fNdiv);
386 dx = (x2-x1)/Float_t(Int_t(3+(x2-x1)/dx));
387 }
388 Float_t dy;
389 if ((y2-y1)*fNdiv<forigsigmaY) dy=(y2-y1);
390 else{
391 dy= forigsigmaY/Float_t(fNdiv);
392 dy = (y2-y1)/Float_t(Int_t(3+(y2-y1)/dy));
393 }
394
395 for (x=x1;x<x2;x+=dx)
396 for (Float_t y=y1;y<y2;y+=dy){
397 if ( (y>(fActualY-(4.0*forigsigmaY))) &&
398 (y<(fActualY+(4.0*forigsigmaY)))){
399 Float_t xt=x-k*fK*(y-y1);
400 if ((TMath::Abs(xch-xt)<4*forigsigmaX)){
401
402 Float_t z0=fGRF->Eval(xch-(xt+dx/2.),fActualY-(y+dy/2.));
403
404 Float_t z1=fGRF->Eval(xch-(xt+dx/2.),fActualY-y);
405 Float_t z2=fGRF->Eval(xch-xt,fActualY-(y+dy/2.));
406 Float_t z3=fGRF->Eval(xch-(xt-dx/2.),fActualY-y);
407 Float_t z4=fGRF->Eval(xch-xt,fActualY-(y-dy/2.));
408 if (z0<0) z0=0;
409 if (z1<0) z1=0;
410 if (z2<0) z2=0;
411 if (z3<0) z3=0;
412 if (z4<0) z4=0;
413
414 // Float_t a=(z1-z3)/2;
415 // Float_t b=(z2-z4)/2;
416 Float_t c= (z3+z1-2*z0)/2.;
417 Float_t d= (z2+z4-2*z0)/2.;
418 Float_t z= (z0+c/12.+d/12.);
419
420 //Float_t z= fGRF->Eval(xch-xt,fActualY-y);
421 if (z>0.) fcharge[i]+=z*dx*dy/fInteg;
422 }
423 }
424 }
425 }
426 k*=-1;
427 }
428 };
429
430 fSigmaX = 0;
431 Float_t sum =0;
432 Float_t mean=0;
433 for (x =-fNPRF*fDStep; x<fNPRF*fDStep;x+=fDStep)
434 { //x in cm fWidth in cm
435 Float_t weight = GetPRFActiv(x);
436 fSigmaX+=x*x*weight;
437 mean+=x*weight;
438 sum+=weight;
439 };
440 if (sum>0){
441 mean/=sum;
442 fSigmaX = TMath::Sqrt(fSigmaX/sum-mean*mean);
443 }
444 else fSigmaX=0;
445 //calculate conversion coefitient to convert position to virtual wire
446 fDYtoWire=Float_t(fNYdiv-1)/(fY2-fY1);
447 fDStepM1=1/fDStep;
448}
449
450void AliTPCPRF2D::Streamer(TBuffer &R__b)
451{
452 // Stream an object of class AliTPCPRF2D
453
454 if (R__b.IsReading()) {
455 Version_t R__v = R__b.ReadVersion(); if (R__v) { }
456 TObject::Streamer(R__b);
457 //read chewron parameters
458 R__b >> fSigmaX;
459 R__b >> fHeightFull;
460 R__b >> fHeightS;
461 R__b >> fShiftY;
462 R__b >> fWidth;
463 R__b >> fK;
464 R__b >> fActualY;
465 //read charge parameters
466 R__b >> fType[0];
467 R__b >> fType[1];
468 R__b >> fType[2];
469 R__b >> fType[3];
470 R__b >> fType[4];
471 R__b >> forigsigmaX;
472 R__b >> forigsigmaY;
473 R__b >> fkNorm;
474 R__b >> fK3X;
475 R__b >> fK3Y;
476 R__b >> fPadDistance;
477 R__b >> fInteg;
478
479 //read functions
480 if (fGRF!=0) {
481 delete [] fGRF;
482 fGRF=0;
483 }
484 if (strncmp(fType,"User",3)==0){
485 fGRF= new TF2;
486 R__b>>fGRF;
487 }
488 if (strncmp(fType,"Gauss",3)==0)
489 fGRF = new TF2("fun",funGauss2D,-5.,5.,-5.,5.,4);
490 if (strncmp(fType,"Cosh",3)==0)
491 fGRF = new TF2("fun",funCosh2D,-5.,5.,-5.,5.,4);
492 if (strncmp(fType,"Gati",3)==0)
493 fGRF = new TF2("fun",funGati2D,-5.,5.,-5.,5.,5);
494
495 //read interpolation parameters
496 R__b >>fY1;
497 R__b >>fY2;
498 R__b >>fNYdiv;
499 R__b >>fDStep;
500 R__b >>fNPRF;
501 if (ffcharge!=0) delete [] ffcharge;
502 ffcharge = new Float_t[fNPRF*fNYdiv];
503 R__b.ReadFastArray(ffcharge,fNPRF*fNYdiv);
504 R__b.ReadFastArray(funParam,5);
505 if (fGRF!=0) fGRF->SetParameters(funParam);
506 //calculate conversion coefitient to convert position to virtual wire
507 fDYtoWire=Float_t(fNYdiv-1)/(fY2-fY1);
508 fDStepM1=1/fDStep;
509 } else {
510 R__b.WriteVersion(AliTPCPRF2D::IsA());
511 TObject::Streamer(R__b);
512 //write chewron parameters
513 R__b << fSigmaX;
514 R__b << fHeightFull;
515 R__b << fHeightS;
516 R__b << fShiftY;
517 R__b << fWidth;
518 R__b << fK;
519 R__b << fActualY;
520 //write charge parameters
521 R__b << fType[0];
522 R__b << fType[1];
523 R__b << fType[2];
524 R__b << fType[3];
525 R__b << fType[4];
526
527 R__b << forigsigmaX;
528 R__b << forigsigmaY;
529 R__b << fkNorm;
530 R__b << fK3X;
531 R__b << fK3Y;
532 R__b << fPadDistance;
533 R__b << fInteg;
534
535 if (strncmp(fType,"User",3)==0) R__b <<fGRF;
536 //write interpolation parameters
537 R__b <<fY1;
538 R__b <<fY2;
539 R__b <<fNYdiv;
540 R__b <<fDStep;
541 R__b <<fNPRF;
542 R__b.WriteFastArray(ffcharge,fNPRF*fNYdiv);
543 R__b.WriteFastArray(funParam,5);
544 }
545}
546
547
548
549
550void AliTPCPRF2D::DrawX(Float_t x1 ,Float_t x2,Float_t y, Bool_t inter)
551{
552 if (fGRF==0) return ;
553 const Int_t N=100;
554 char s[100];
555 TCanvas * c1 = new TCanvas("canPRF","Pad response function",700,900);
556 c1->cd();
557 TPad * pad1 = new TPad("pad1PRF","",0.05,0.61,0.95,0.97,21);
558 pad1->Draw();
559 TPad * pad2 = new TPad("pad2PRF","",0.05,0.22,0.95,0.60,21);
560 pad2->Draw();
561
562 // pad1->cd();
563 //pad2->cd();
564 gStyle->SetOptFit(1);
565 gStyle->SetOptStat(0);
566 sprintf(s,"PRF response function for chevron pad");
567 TH1F * hPRFc = new TH1F("hPRFc",s,N+1,x1,x2);
568 Float_t x=x1;
569 Float_t y1;
570 // Float_t y2;
571
572 for (Float_t i = 0;i<N+1;i++)
573 {
574 x+=(x2-x1)/Float_t(N);
575 y1 = GetPRF(x,y,inter);
576 hPRFc->Fill(x,y1);
577 };
578
579 pad1->cd();
580 fGRF->SetRange(x1,x1,x2,x2);
581 fGRF->SetNpx(25);
582 fGRF->SetNpy(25);
583 fGRF->Draw("lego2");
584 // hPRFo->Fit("gaus");
585 gStyle->SetOptStat(1);
586 pad2->cd();
587 hPRFc->Fit("gaus");
588 c1->cd();
589 TPaveText * comment = new TPaveText(0.05,0.02,0.95,0.20,"NDC");
590 comment->SetTextAlign(12);
591 comment->SetFillColor(42);
592 TText *title = comment->AddText("Chevron pad parameters:");
593 title->SetTextSize(0.03);
594 sprintf(s,"Full height of pad: %2.2f",fHeightFull);
595 comment->AddText(s);
596 sprintf(s,"Height of one chevron unit h: %2.2f cm",2*fHeightS);
597 comment->AddText(s);
598 sprintf(s,"Width of one chevron unit w: %2.2f cm",fWidth);
599 comment->AddText(s);
600 sprintf(s,"Overlap factor: %2.2f",fK*fHeightS/fWidth);
601 comment->AddText(s);
602 sprintf(s,"Y position: %2.2f ",y);
603 comment->AddText(s);
604 sprintf(s,"Sigma x of original distribution: %2.2f ",forigsigmaX);
605 comment->AddText(s);
606 sprintf(s,"Sigma y of original distribution: %2.2f ",forigsigmaY);
607 comment->AddText(s);
608 sprintf(s,"Type of original distribution: %s ",fType);
609 comment->AddText(s);
610 comment->Draw();
611}
612
613
614
615void AliTPCPRF2D::Draw(Float_t x1 ,Float_t x2,Float_t y1, Float_t y2,
616 Bool_t inter, Int_t Nx, Int_t Ny)
617{
618 char s[100];
619 if (fGRF==0) return ;
620 TCanvas * c1 = new TCanvas("canPRF","Pad response function",700,900);
621 c1->cd();
622 TPad * pad1 = new TPad("pad1PRF","",0.05,0.61,0.95,0.97,21);
623 pad1->Draw();
624 TPad * pad2 = new TPad("pad2PRF","",0.05,0.22,0.95,0.60,21);
625 pad2->Draw();
626
627 // pad1->cd();
628 //pad2->cd();
629 gStyle->SetOptFit(1);
630 gStyle->SetOptStat(0);
631 sprintf(s,"PRF response function for chevron pad");
632 TH2F * hPRFc = new TH2F("hPRFc",s,Nx+1,x1,x2,Ny+1,y1,y2);
633 Float_t dx=(x2-x1)/Float_t(Nx);
634 Float_t dy=(y2-y1)/Float_t(Ny) ;
635 Float_t x,y,z;
636 // Float_t y2;
637 for ( x = x1;x<=x2;x+=dx){
638 for(y = y1;y<=y2;y+=dy)
639 {
640 z = GetPRF(x,y,inter);
641 hPRFc->Fill(x,y,z);
642 };
643 }
644 pad1->cd();
645 fGRF->SetRange(x1,y1,x2,y2);
646 fGRF->SetNpx(25);
647 fGRF->SetNpy(25);
648 fGRF->Draw("lego2");
649 // hPRFo->Fit("gaus");
650 gStyle->SetOptStat(1);
651 pad2->cd();
652 hPRFc->Draw("lego2");
653 c1->cd();
654 TPaveText * comment = new TPaveText(0.05,0.02,0.95,0.20,"NDC");
655 comment->SetTextAlign(12);
656 comment->SetFillColor(42);
657 TText *title = comment->AddText("Chevron pad parameters:");
658 title->SetTextSize(0.03);
659 sprintf(s,"Full height of pad: %2.2f",fHeightFull);
660 comment->AddText(s);
661 sprintf(s,"Height of one chevron unit h: %2.2f cm",2*fHeightS);
662 comment->AddText(s);
663 sprintf(s,"Width of one chevron unit w: %2.2f cm",fWidth);
664 comment->AddText(s);
665 sprintf(s,"Overlap factor: %2.2f",fK*fHeightS/fWidth);
666 comment->AddText(s);
667 sprintf(s,"Sigma x of original distribution: %2.2f ",forigsigmaX);
668 comment->AddText(s);
669 sprintf(s,"Sigma y of original distribution: %2.2f ",forigsigmaY);
670 comment->AddText(s);
671 sprintf(s,"Type of original distribution: %s ",fType);
672 comment->AddText(s);
673 comment->Draw();
674}
675
676void AliTPCPRF2D::DrawDist(Float_t x1 ,Float_t x2,Float_t y1, Float_t y2,
677 Bool_t inter, Int_t Nx, Int_t Ny, Float_t thr)
678{
679 const Float_t minth=0.00001;
680 if (thr<minth) thr=minth;
681 char s[100];
682 if (fGRF==0) return ;
683 TCanvas * c1 = new TCanvas("padDistortion","COG distortion",700,900);
684 c1->cd();
685 TPad * pad1 = new TPad("CHARGE","",0.05,0.61,0.95,0.97,21);
686 pad1->Draw();
687 TPad * pad2 = new TPad("dist","",0.05,0.22,0.95,0.60,21);
688 pad2->Draw();
689
690 // pad1->cd();
691 //pad2->cd();
692 gStyle->SetOptFit(1);
693 gStyle->SetOptStat(0);
694 sprintf(s,"COG distortion (threshold=%2.2f)",thr);
695 TH2F * hPRFDist = new TH2F("hDistortion",s,Nx+1,x1,x2,Ny+1,y1,y2);
696 Float_t dx=(x2-x1)/Float_t(Nx);
697 Float_t dy=(y2-y1)/Float_t(Ny) ;
698 Float_t x,y,z,ddx;
699 // Float_t y2;
700 for ( x = x1;x<(x2+dx/2.);x+=dx)
701 for(y = y1;y<=(y2+dx/2.);y+=dy)
702 {
703 Float_t sumx=0;
704 Float_t sum=0;
705 for (Float_t padx=-fWidth;padx<(fWidth*1.1);padx+=fWidth)
706 {
707 z = GetPRF(x-padx,y,inter);
708 if (z>thr){
709 sum+=z;
710 sumx+=z*padx;
711 }
712 };
713 if (sum>minth)
714 {
715 ddx = (x-(sumx/sum));
716 }
717 else ddx=-1;
718 if (TMath::Abs(ddx)<10) hPRFDist->Fill(x,y,ddx);
719 }
720 pad1->cd();
721 fGRF->SetRange(x1,y1,x2,y2);
722 fGRF->SetNpx(25);
723 fGRF->SetNpy(25);
724 fGRF->Draw("lego2");
725 // hPRFo->Fit("gaus");
726 // gStyle->SetOptStat(1);
727 pad2->cd();
728 hPRFDist->Draw("lego2");
729
730 c1->cd();
731 TPaveText * comment = new TPaveText(0.05,0.02,0.95,0.20,"NDC");
732 comment->SetTextAlign(12);
733 comment->SetFillColor(42);
734 // TText *title = comment->AddText("Distortion of COG method");
735 // title->SetTextSize(0.03);
736 TText * title = comment->AddText("Chevron pad parameters:");
737 title->SetTextSize(0.03);
738 sprintf(s,"Full height of pad: %2.2f",fHeightFull);
739 comment->AddText(s);
740 sprintf(s,"Height of one chevron unit h: %2.2f cm",2*fHeightS);
741 comment->AddText(s);
742 sprintf(s,"Width of one chevron unit w: %2.2f cm",fWidth);
743 comment->AddText(s);
744 sprintf(s,"Overlap factor: %2.2f",fK*fHeightS/fWidth);
745 comment->AddText(s);
746 sprintf(s,"Sigma x of original distribution: %2.2f ",forigsigmaX);
747 comment->AddText(s);
748 sprintf(s,"Sigma y of original distribution: %2.2f ",forigsigmaY);
749 comment->AddText(s);
750 sprintf(s,"Type of original distribution: %s ",fType);
751 comment->AddText(s);
752 comment->Draw();
753
754}
755