///////////////////////////////////////////////////////////////////////////////
// //
-// Calibration base class for a single ROC //
-// Contains one float value per pad //
+// Calibration base class for a single ROC //
+// Contains one float value per pad //
// mapping of the pads taken form AliTPCROC //
// //
///////////////////////////////////////////////////////////////////////////////
-#include "AliTPCCalROC.h"
+//
+// ROOT includes
+//
#include "TMath.h"
#include "TClass.h"
#include "TFile.h"
+#include "TH1F.h"
+#include "TH2F.h"
+#include "TArrayI.h"
+
+//
+//
+#include "AliTPCCalROC.h"
+#include "AliMathBase.h"
+
+#include "TRandom3.h" // only needed by the AliTPCCalROCTest() method
ClassImp(AliTPCCalROC)
//_____________________________________________________________________________
-AliTPCCalROC::AliTPCCalROC():TObject()
+AliTPCCalROC::AliTPCCalROC()
+ :TNamed(),
+ fSector(0),
+ fNChannels(0),
+ fNRows(0),
+ fIndexes(0),
+ fData(0)
{
//
// Default constructor
//
- fSector = 0;
- fNChannels = 0;
- fNRows = 0;
- fData = 0;
+
}
//_____________________________________________________________________________
-AliTPCCalROC::AliTPCCalROC(UInt_t sector):TObject()
+AliTPCCalROC::AliTPCCalROC(UInt_t sector)
+ :TNamed(),
+ fSector(0),
+ fNChannels(0),
+ fNRows(0),
+ fIndexes(0),
+ fData(0)
{
//
// Constructor that initializes a given sector
}
//_____________________________________________________________________________
-AliTPCCalROC::AliTPCCalROC(const AliTPCCalROC &c):TObject(c)
+AliTPCCalROC::AliTPCCalROC(const AliTPCCalROC &c)
+ :TNamed(c),
+ fSector(0),
+ fNChannels(0),
+ fNRows(0),
+ fIndexes(0),
+ fData(0)
{
//
// AliTPCCalROC copy constructor
fData = new Float_t[fNChannels];
for (UInt_t idata = 0; idata< fNChannels; idata++) fData[idata] = c.fData[idata];
}
+//____________________________________________________________________________
+AliTPCCalROC & AliTPCCalROC::operator =(const AliTPCCalROC & param)
+{
+ //
+ // assignment operator - dummy
+ //
+ fData=param.fData;
+ return (*this);
+}
+
//_____________________________________________________________________________
AliTPCCalROC::~AliTPCCalROC()
void AliTPCCalROC::Streamer(TBuffer &R__b)
{
+ //
// Stream an object of class AliTPCCalROC.
+ //
if (R__b.IsReading()) {
AliTPCCalROC::Class()->ReadBuffer(R__b, this);
fIndexes = AliTPCROC::Instance()->GetRowIndexes(fSector);
}
+// algebra fuctions:
+
+void AliTPCCalROC::Add(Float_t c1){
+ //
+ // add c1 to each channel of the ROC
+ //
+ for (UInt_t idata = 0; idata< fNChannels; idata++) fData[idata]+=c1;
+}
+
+
+void AliTPCCalROC::Multiply(Float_t c1){
+ //
+ // multiply each channel of the ROC with c1
+ //
+ for (UInt_t idata = 0; idata< fNChannels; idata++) fData[idata]*=c1;
+}
+
-void AliTPCCalROC::Test(){
+void AliTPCCalROC::Add(const AliTPCCalROC * roc, Double_t c1){
//
- // example function to show functionality and tes AliTPCCalROC
+ // multiply AliTPCCalROC roc by c1 and add each channel to the coresponing channel in the ROC
+ // - pad by pad
//
+ for (UInt_t idata = 0; idata< fNChannels; idata++){
+ fData[idata]+=roc->fData[idata]*c1;
+ }
+}
+
+
+void AliTPCCalROC::Multiply(const AliTPCCalROC* roc) {
+ //
+ // multiply each channel of the ROC with the coresponding channel of 'roc'
+ // - pad by pad -
+ //
+ for (UInt_t idata = 0; idata< fNChannels; idata++){
+ fData[idata]*=roc->fData[idata];
+ }
+}
+
+
+void AliTPCCalROC::Divide(const AliTPCCalROC* roc) {
+ //
+ // divide each channel of the ROC by the coresponding channel of 'roc'
+ // - pad by pad -
+ //
+ Float_t kEpsilon=0.00000000000000001;
+ for (UInt_t idata = 0; idata< fNChannels; idata++){
+ if (TMath::Abs(roc->fData[idata])>kEpsilon)
+ fData[idata]/=roc->fData[idata];
+ }
+}
+
+Double_t AliTPCCalROC::GetMean(AliTPCCalROC* outlierROC) {
+ //
+ // returns the mean value of the ROC
+ // pads with value != 0 in outlierROC are not used for the calculation
+ // return 0 if no data is accepted by the outlier cuts
+ //
+ if (!outlierROC) return TMath::Mean(fNChannels, fData);
+ Double_t *ddata = new Double_t[fNChannels];
+ Int_t NPoints = 0;
+ for (UInt_t i=0;i<fNChannels;i++) {
+ if (!(outlierROC->GetValue(i))) {
+ ddata[NPoints]= fData[i];
+ NPoints++;
+ }
+ }
+ Double_t mean = 0;
+ if(NPoints>0)
+ mean = TMath::Mean(NPoints, ddata);
+ delete [] ddata;
+ return mean;
+}
+
+Double_t AliTPCCalROC::GetMedian(AliTPCCalROC* outlierROC) {
+ //
+ // returns the median value of the ROC
+ // pads with value != 0 in outlierROC are not used for the calculation
+ // return 0 if no data is accepted by the outlier cuts
+ //
+ if (!outlierROC) return TMath::Median(fNChannels, fData);
+ Double_t *ddata = new Double_t[fNChannels];
+ Int_t NPoints = 0;
+ for (UInt_t i=0;i<fNChannels;i++) {
+ if (!(outlierROC->GetValue(i))) {
+ ddata[NPoints]= fData[i];
+ NPoints++;
+ }
+ }
+ Double_t median = 0;
+ if(NPoints>0)
+ median = TMath::Median(NPoints, ddata);
+ delete [] ddata;
+ return median;
+}
+
+Double_t AliTPCCalROC::GetRMS(AliTPCCalROC* outlierROC) {
+ //
+ // returns the RMS value of the ROC
+ // pads with value != 0 in outlierROC are not used for the calculation
+ // return 0 if no data is accepted by the outlier cuts
+ //
+ if (!outlierROC) return TMath::RMS(fNChannels, fData);
+ Double_t *ddata = new Double_t[fNChannels];
+ Int_t NPoints = 0;
+ for (UInt_t i=0;i<fNChannels;i++) {
+ if (!(outlierROC->GetValue(i))) {
+ ddata[NPoints]= fData[i];
+ NPoints++;
+ }
+ }
+ Double_t rms = 0;
+ if(NPoints>0)
+ rms = TMath::RMS(NPoints, ddata);
+ delete [] ddata;
+ return rms;
+}
+
+Double_t AliTPCCalROC::GetLTM(Double_t *sigma, Double_t fraction, AliTPCCalROC* outlierROC){
+ //
+ // returns the LTM and sigma
+ // pads with value != 0 in outlierROC are not used for the calculation
+ // return 0 if no data is accepted by the outlier cuts
+ //
+ Double_t *ddata = new Double_t[fNChannels];
+ UInt_t NPoints = 0;
+ for (UInt_t i=0;i<fNChannels;i++) {
+ if (!outlierROC || !(outlierROC->GetValue(i))) {
+ ddata[NPoints]= fData[i];
+ NPoints++;
+ }
+ }
+
+ Double_t ltm =0, lsigma=0;
+ if(NPoints>0) {
+ Int_t hh = TMath::Min(TMath::Nint(fraction *NPoints), Int_t(NPoints));
+ AliMathBase::EvaluateUni(NPoints,ddata, ltm, lsigma, hh);
+ if (sigma) *sigma=lsigma;
+ }
+
+ delete [] ddata;
+ return ltm;
+}
+
+TH1F * AliTPCCalROC::MakeHisto1D(Float_t min, Float_t max,Int_t type){
+ //
+ // make 1D histo
+ // type -1 = user defined range
+ // 0 = nsigma cut nsigma=min
+ // 1 = delta cut around median delta=min
+ //
+ if (type>=0){
+ if (type==0){
+ // nsigma range
+ Float_t mean = GetMean();
+ Float_t sigma = GetRMS();
+ Float_t nsigma = TMath::Abs(min);
+ min = mean-nsigma*sigma;
+ max = mean+nsigma*sigma;
+ }
+ if (type==1){
+ // fixed range
+ Float_t mean = GetMedian();
+ Float_t delta = min;
+ min = mean-delta;
+ max = mean+delta;
+ }
+ if (type==2){
+ //
+ // LTM mean +- nsigma
+ //
+ Double_t sigma;
+ Float_t mean = GetLTM(&sigma,max);
+ sigma*=min;
+ min = mean-sigma;
+ max = mean+sigma;
+ }
+ }
+ char name[1000];
+ sprintf(name,"%s ROC 1D%d",GetTitle(),fSector);
+ TH1F * his = new TH1F(name,name,100, min,max);
+ for (UInt_t irow=0; irow<fNRows; irow++){
+ UInt_t npads = (Int_t)GetNPads(irow);
+ for (UInt_t ipad=0; ipad<npads; ipad++){
+ his->Fill(GetValue(irow,ipad));
+ }
+ }
+ return his;
+}
+
+
+
+TH2F * AliTPCCalROC::MakeHisto2D(Float_t min, Float_t max,Int_t type){
+ //
+ // make 2D histo
+ // type -1 = user defined range
+ // 0 = nsigma cut nsigma=min
+ // 1 = delta cut around median delta=min
+ //
+ if (type>=0){
+ if (type==0){
+ // nsigma range
+ Float_t mean = GetMean();
+ Float_t sigma = GetRMS();
+ Float_t nsigma = TMath::Abs(min);
+ min = mean-nsigma*sigma;
+ max = mean+nsigma*sigma;
+ }
+ if (type==1){
+ // fixed range
+ Float_t mean = GetMedian();
+ Float_t delta = min;
+ min = mean-delta;
+ max = mean+delta;
+ }
+ if (type==2){
+ Double_t sigma;
+ Float_t mean = GetLTM(&sigma,max);
+ sigma*=min;
+ min = mean-sigma;
+ max = mean+sigma;
+
+ }
+ }
+ UInt_t maxPad = 0;
+ for (UInt_t irow=0; irow<fNRows; irow++){
+ if (GetNPads(irow)>maxPad) maxPad = GetNPads(irow);
+ }
+ char name[1000];
+ sprintf(name,"%s ROC%d",GetTitle(),fSector);
+ TH2F * his = new TH2F(name,name,fNRows+10,-5, fNRows+5, maxPad+10, -(Int_t(maxPad/2))-5, maxPad/2+5);
+ for (UInt_t irow=0; irow<fNRows; irow++){
+ UInt_t npads = (Int_t)GetNPads(irow);
+ for (UInt_t ipad=0; ipad<npads; ipad++){
+ his->Fill(irow+0.5,Int_t(ipad)-Int_t(npads/2)+0.5,GetValue(irow,ipad));
+ }
+ }
+ his->SetMaximum(max);
+ his->SetMinimum(min);
+ return his;
+}
+
+TH2F * AliTPCCalROC::MakeHistoOutliers(Float_t delta, Float_t fraction, Int_t type){
+ //
+ // Make Histogram with outliers
+ // mode = 0 - sigma cut used
+ // mode = 1 - absolute cut used
+ // fraction - fraction of values used to define sigma
+ // delta - in mode 0 - nsigma cut
+ // mode 1 - delta cut
+ //
+ Double_t sigma;
+ Float_t mean = GetLTM(&sigma,fraction);
+ if (type==0) delta*=sigma;
+ UInt_t maxPad = 0;
+ for (UInt_t irow=0; irow<fNRows; irow++){
+ if (GetNPads(irow)>maxPad) maxPad = GetNPads(irow);
+ }
+
+ char name[1000];
+ sprintf(name,"%s ROC Outliers%d",GetTitle(),fSector);
+ TH2F * his = new TH2F(name,name,fNRows+10,-5, fNRows+5, maxPad+10, -(Int_t(maxPad/2))-5, maxPad/2+5);
+ for (UInt_t irow=0; irow<fNRows; irow++){
+ UInt_t npads = (Int_t)GetNPads(irow);
+ for (UInt_t ipad=0; ipad<npads; ipad++){
+ if (TMath::Abs(GetValue(irow,ipad)-mean)>delta)
+ his->Fill(irow+0.5,Int_t(ipad)-Int_t(npads/2)+0.5,1);
+ }
+ }
+ return his;
+}
+
+
+
+void AliTPCCalROC::Draw(Option_t* opt){
+ //
+ // create histogram with values and draw it
+ //
+ TH1 * his=0;
+ TString option=opt;
+ option.ToUpper();
+ if (option.Contains("1D")){
+ his = MakeHisto1D();
+ }
+ else{
+ his = MakeHisto2D();
+ }
+ his->Draw(option);
+}
+
+
+
+
+
+void AliTPCCalROC::Test() {
+ //
+ // example function to show functionality and test AliTPCCalROC
+ //
+
+ Float_t kEpsilon=0.00001;
+
+ // create CalROC with defined values
AliTPCCalROC roc0(0);
for (UInt_t irow = 0; irow <roc0.GetNrows(); irow++){
for (UInt_t ipad = 0; ipad <roc0.GetNPads(irow); ipad++){
roc0.SetValue(irow,ipad,value);
}
}
- //
+
+ // copy CalROC, readout values and compare to original
AliTPCCalROC roc1(roc0);
for (UInt_t irow = 0; irow <roc1.GetNrows(); irow++){
for (UInt_t ipad = 0; ipad <roc1.GetNPads(irow); ipad++){
Float_t value = irow+ipad/1000.;
if (roc1.GetValue(irow,ipad)!=value){
- printf("Read/Write error\trow=%d\tpad=%d\n",irow,ipad);
+ printf("Read/Write error\trow=%d\tpad=%d\n",irow,ipad);
}
}
- }
+ }
+
+ // write original CalROC to file
TFile f("calcTest.root","recreate");
roc0.Write("Roc0");
AliTPCCalROC * roc2 = (AliTPCCalROC*)f.Get("Roc0");
f.Close();
- //
+
+ // read CalROC from file and compare to original CalROC
for (UInt_t irow = 0; irow <roc0.GetNrows(); irow++){
if (roc0.GetNPads(irow)!=roc2->GetNPads(irow))
printf("NPads - Read/Write error\trow=%d\n",irow);
for (UInt_t ipad = 0; ipad <roc1.GetNPads(irow); ipad++){
Float_t value = irow+ipad/1000.;
if (roc2->GetValue(irow,ipad)!=value){
- printf("Read/Write error\trow=%d\tpad=%d\n",irow,ipad);
+ printf("Read/Write error\trow=%d\tpad=%d\n",irow,ipad);
+ }
+ }
+ }
+
+ //
+ // Algebra Tests
+ //
+
+ // Add constant
+ AliTPCCalROC roc3(roc0);
+ roc3.Add(1.5);
+ for (UInt_t irow = 0; irow <roc3.GetNrows(); irow++){
+ for (UInt_t ipad = 0; ipad <roc3.GetNPads(irow); ipad++){
+ Float_t value = irow+ipad/1000. + 1.5;
+ if (TMath::Abs(roc3.GetValue(irow,ipad)-value) > kEpsilon){
+ printf("Add constant - error\trow=%d\tpad=%d\n",irow,ipad);
+ }
+ }
+ }
+
+ // Add another CalROC
+ AliTPCCalROC roc4(roc0);
+ roc4.Add(&roc0, -1.5);
+ for (UInt_t irow = 0; irow <roc4.GetNrows(); irow++){
+ for (UInt_t ipad = 0; ipad <roc4.GetNPads(irow); ipad++){
+ Float_t value = irow+ipad/1000. - 1.5 * (irow+ipad/1000.);
+ if (TMath::Abs(roc4.GetValue(irow,ipad)-value) > kEpsilon){
+ printf("Add CalROC - error\trow=%d\tpad=%d\n",irow,ipad);
+ }
+ }
+ }
+
+ // Multiply with constant
+ AliTPCCalROC roc5(roc0);
+ roc5.Multiply(-1.4);
+ for (UInt_t irow = 0; irow <roc5.GetNrows(); irow++){
+ for (UInt_t ipad = 0; ipad <roc5.GetNPads(irow); ipad++){
+ Float_t value = (irow+ipad/1000.) * (-1.4);
+ if (TMath::Abs(roc5.GetValue(irow,ipad)-value) > kEpsilon){
+ printf("Multiply with constant - error\trow=%d\tpad=%d\n",irow,ipad);
+ }
+ }
+ }
+
+ // Multiply another CalROC
+ AliTPCCalROC roc6(roc0);
+ roc6.Multiply(&roc0);
+ for (UInt_t irow = 0; irow <roc6.GetNrows(); irow++){
+ for (UInt_t ipad = 0; ipad <roc6.GetNPads(irow); ipad++){
+ Float_t value = (irow+ipad/1000.) * (irow+ipad/1000.);
+ if (TMath::Abs(roc6.GetValue(irow,ipad)-value) > kEpsilon*100){
+ printf("Multiply with CalROC - error\trow=%d\tpad=%d\n",irow,ipad);
+ }
+ }
+ }
+
+
+ // Divide by CalROC
+ AliTPCCalROC roc7(roc0);
+ roc7.Divide(&roc0);
+ for (UInt_t irow = 0; irow <roc7.GetNrows(); irow++){
+ for (UInt_t ipad = 0; ipad <roc7.GetNPads(irow); ipad++){
+ Float_t value = 1.;
+ if (irow+ipad == 0) value = roc0.GetValue(irow,ipad);
+ if (TMath::Abs(roc7.GetValue(irow,ipad)-value) > kEpsilon){
+ printf("Multiply with CalROC - error\trow=%d\tpad=%d\n",irow,ipad);
}
}
- }
+ }
+
+ //
+ // Statistics Test
+ //
+
+ // create CalROC with defined values
+ TRandom3 rnd(0);
+ AliTPCCalROC sroc0(0);
+ for (UInt_t ichannel = 0; ichannel < sroc0.GetNchannels(); ichannel++){
+ Float_t value = rnd.Gaus(10., 2.);
+ sroc0.SetValue(ichannel,value);
+ }
+
+ printf("Mean (should be close to 10): %f\n", sroc0.GetMean());
+ printf("RMS (should be close to 2): %f\n", sroc0.GetRMS());
+ printf("Median (should be close to 10): %f\n", sroc0.GetMedian());
+ printf("LTM (should be close to 10): %f\n", sroc0.GetLTM());
+
+ //AliTPCCalROC* sroc1 = sroc0.LocalFit(4, 8);
+
+ //delete sroc1;
+
+// std::cout << TMath::Abs(roc5.GetValue(irow,ipad)-value) << std::endl;
+}
+
+
+AliTPCCalROC * AliTPCCalROC::LocalFit(Int_t rowRadius, Int_t padRadius, AliTPCCalROC* ROCoutliers, Bool_t robust, Double_t chi2Threshold, Double_t robustFraction) {
+ //
+ // MakeLocalFit - smoothing
+ // returns a AliTPCCalROC with smoothed data
+ // rowRadius and padRadius specifies a window around a given pad.
+ // The data of this window are fitted with a parabolic function.
+ // This function is evaluated at the pad's position.
+ // At the edges the window is shifted, so that the specified pad is not anymore in the center of the window.
+ // rowRadius - radius - rows to be used for smoothing
+ // padradius - radius - pads to be used for smoothing
+ // ROCoutlier - map of outliers - pads not to be used for local smoothing
+ // robust - robust method of fitting - (much slower)
+ // chi2Threshold: Threshold for chi2 when EvalRobust is called
+ // robustFraction: Fraction of data that will be used in EvalRobust
+ //
+ AliTPCCalROC * ROCfitted = new AliTPCCalROC(fSector);
+ TLinearFitter fitterQ(6,"hyp5");
+ // TLinearFitter fitterQ(6,"x0++x1++x2++x3++x4++x5");
+ fitterQ.StoreData(kTRUE);
+ for (UInt_t row=0; row < GetNrows(); row++) {
+ //std::cout << "Entering row " << row << " of " << GetNrows() << " @ sector "<< fSector << " for local fitting... "<< std::endl;
+ for (UInt_t pad=0; pad < GetNPads(row); pad++)
+ ROCfitted->SetValue(row, pad, GetNeighbourhoodValue(&fitterQ, row, pad, rowRadius, padRadius, ROCoutliers, robust, chi2Threshold, robustFraction));
+ }
+ return ROCfitted;
+}
+
+
+Double_t AliTPCCalROC::GetNeighbourhoodValue(TLinearFitter* fitterQ, Int_t row, Int_t pad, Int_t rRadius, Int_t pRadius, AliTPCCalROC* ROCoutliers, Bool_t robust, Double_t chi2Threshold, Double_t robustFraction) {
+ //
+ // AliTPCCalROC::GetNeighbourhoodValue - smoothing - PRIVATE
+ // in this function the fit for LocalFit is done
+ //
+
+ fitterQ->ClearPoints();
+ TVectorD fitParam(6);
+ Int_t npoints=0;
+ Double_t xx[6];
+ Float_t dlx, dly;
+ Float_t lPad[3] = {0};
+ Float_t localXY[3] = {0};
+
+ AliTPCROC* tpcROCinstance = AliTPCROC::Instance();
+ tpcROCinstance->GetPositionLocal(fSector, row, pad, lPad); // calculate position lPad by pad and row number
+
+ TArrayI *neighbourhoodRows = 0;
+ TArrayI *neighbourhoodPads = 0;
+
+ //std::cerr << "Trying to get neighbourhood for row " << row << ", pad " << pad << std::endl;
+ GetNeighbourhood(neighbourhoodRows, neighbourhoodPads, row, pad, rRadius, pRadius);
+ //std::cerr << "Got neighbourhood for row " << row << ", pad " << pad << std::endl;
+
+ Int_t r, p;
+ for (Int_t i=0; i < (2*rRadius+1)*(2*pRadius+1); i++) {
+ r = neighbourhoodRows->At(i);
+ p = neighbourhoodPads->At(i);
+ if (r == -1 || p == -1) continue; // window is bigger than ROC
+ tpcROCinstance->GetPositionLocal(fSector, r, p, localXY); // calculate position localXY by pad and row number
+ dlx = lPad[0] - localXY[0];
+ dly = lPad[1] - localXY[1];
+ //xx[0] = 1;
+ xx[1] = dlx;
+ xx[2] = dly;
+ xx[3] = dlx*dlx;
+ xx[4] = dly*dly;
+ xx[5] = dlx*dly;
+ if (!ROCoutliers || ROCoutliers->GetValue(r,p) != 1) {
+ fitterQ->AddPoint(&xx[1], GetValue(r, p), 1);
+ npoints++;
+ }
+ }
+
+ delete neighbourhoodRows;
+ delete neighbourhoodPads;
+
+ if (npoints < 0.5 * ((2*rRadius+1)*(2*pRadius+1)) ) {
+ // std::cerr << "Too few data points for fitting @ row " << row << ", pad " << pad << " in sector " << fSector << std::endl;
+ return 0.; // for diagnostic
+ }
+ fitterQ->Eval();
+ fitterQ->GetParameters(fitParam);
+ Float_t chi2Q = 0;
+ if (robust) chi2Q = fitterQ->GetChisquare()/(npoints-6.);
+ //if (robust) chi2Q = fitterQ->GetChisquare()/(npoints-6.);
+ if (robust && chi2Q > chi2Threshold) {
+ //std::cout << "robust fitter called... " << std::endl;
+ fitterQ->EvalRobust(robustFraction);
+ fitterQ->GetParameters(fitParam);
+ }
+ Double_t value = fitParam[0];
+
+ //if (value < 0) std::cerr << "negative fit-value " << value << " in sector "<< this->fSector << " @ row: " << row << " and pad: " << pad << ", with fitter Chi2 = " << chi2Q << std::endl;
+ return value;
+}
+
+
+
+
+void AliTPCCalROC::GetNeighbourhood(TArrayI* &rowArray, TArrayI* &padArray, Int_t row, Int_t pad, Int_t rRadius, Int_t pRadius) {
+ //
+ // AliTPCCalROC::GetNeighbourhood - PRIVATE
+ // in this function the window for LocalFit is determined
+ //
+ rowArray = new TArrayI((2*rRadius+1)*(2*pRadius+1));
+ padArray = new TArrayI((2*rRadius+1)*(2*pRadius+1));
+
+ Int_t rmin = row - rRadius;
+ UInt_t rmax = row + rRadius;
+
+ // if window goes out of ROC
+ if (rmin < 0) {
+ rmax = rmax - rmin;
+ rmin = 0;
+ }
+ if (rmax >= GetNrows()) {
+ rmin = rmin - (rmax - GetNrows()+1);
+ rmax = GetNrows() - 1;
+ if (rmin < 0 ) rmin = 0; // if the window is bigger than the ROC
+ }
+
+ Int_t pmin, pmax;
+ Int_t i = 0;
+
+ for (UInt_t r = rmin; r <= rmax; r++) {
+ pmin = pad - pRadius;
+ pmax = pad + pRadius;
+ if (pmin < 0) {
+ pmax = pmax - pmin;
+ pmin = 0;
+ }
+ if (pmax >= (Int_t)GetNPads(r)) {
+ pmin = pmin - (pmax - GetNPads(r)+1);
+ pmax = GetNPads(r) - 1;
+ if (pmin < 0 ) pmin = 0; // if the window is bigger than the ROC
+ }
+ for (Int_t p = pmin; p <= pmax; p++) {
+ (*rowArray)[i] = r;
+ (*padArray)[i] = p;
+ i++;
+ }
+ }
+ for (Int_t j = i; j < rowArray->GetSize(); j++){ // unused padArray-entries, in the case that the window is bigger than the ROC
+ //std::cout << "trying to write -1" << std::endl;
+ (*rowArray)[j] = -1;
+ (*padArray)[j] = -1;
+ //std::cout << "writing -1" << std::endl;
+ }
+}
+
+
+
+void AliTPCCalROC::GlobalFit(const AliTPCCalROC* ROCoutliers, Bool_t robust, TVectorD &fitParam, TMatrixD &covMatrix, Float_t & chi2, Int_t fitType, Double_t chi2Threshold, Double_t robustFraction, Double_t err){
+ //
+ // Makes a GlobalFit for the given secotr and return fit-parameters, covariance and chi2
+ // The origin of the fit function is the center of the ROC!
+ // fitType == 0: fit plane function
+ // fitType == 1: fit parabolic function
+ // ROCoutliers - pads with value !=0 are not used in fitting procedure
+ // chi2Threshold: Threshold for chi2 when EvalRobust is called
+ // robustFraction: Fraction of data that will be used in EvalRobust
+ // err: error of the data points
+ //
+ TLinearFitter* fitterG = 0;
+ Double_t xx[6];
+
+ if (fitType == 1) {
+ fitterG = new TLinearFitter (6,"x0++x1++x2++x3++x4++x5");
+ fitParam.ResizeTo(6);
+ covMatrix.ResizeTo(6,6);
+ } else {
+ fitterG = new TLinearFitter(3,"x0++x1++x2");
+ fitParam.ResizeTo(3);
+ covMatrix.ResizeTo(3,3);
+ }
+ fitterG->StoreData(kTRUE);
+ fitterG->ClearPoints();
+ Int_t npoints=0;
+
+ Float_t dlx, dly;
+ Float_t centerPad[3] = {0};
+ Float_t localXY[3] = {0};
+
+ AliTPCROC* tpcROCinstance = AliTPCROC::Instance();
+ tpcROCinstance->GetPositionLocal(fSector, GetNrows()/2, GetNPads(GetNrows()/2)/2, centerPad); // calculate center of ROC
+
+ // loop over all channels and read data into fitterG
+ for (UInt_t irow = 0; irow < GetNrows(); irow++) {
+ for (UInt_t ipad = 0; ipad < GetNPads(irow); ipad++) {
+ // fill fitterG
+ if (ROCoutliers && ROCoutliers->GetValue(irow, ipad) != 0) continue;
+ tpcROCinstance->GetPositionLocal(fSector, irow, ipad, localXY); // calculate position localXY by pad and row number
+ dlx = localXY[0] - centerPad[0];
+ dly = localXY[1] - centerPad[1];
+ xx[0] = 1;
+ xx[1] = dlx;
+ xx[2] = dly;
+ xx[3] = dlx*dlx;
+ xx[4] = dly*dly;
+ xx[5] = dlx*dly;
+ npoints++;
+ fitterG->AddPoint(xx, GetValue(irow, ipad), err);
+ }
+ }
+ if(npoints>10) { // make sure there is something to fit
+ fitterG->Eval();
+ fitterG->GetParameters(fitParam);
+ fitterG->GetCovarianceMatrix(covMatrix);
+ if (fitType == 1)
+ chi2 = fitterG->GetChisquare()/(npoints-6.);
+ else chi2 = fitterG->GetChisquare()/(npoints-3.);
+ if (robust && chi2 > chi2Threshold) {
+ // std::cout << "robust fitter called... " << std::endl;
+ fitterG->EvalRobust(robustFraction);
+ fitterG->GetParameters(fitParam);
+ }
+ } else {
+ // set parameteres to 0
+ Int_t nParameters = 3;
+ if (fitType == 1)
+ nParameters = 6;
+
+ for(Int_t i = 0; i < nParameters; i++)
+ fitParam[i] = 0;
+ }
+
+ delete fitterG;
+}
+
+
+AliTPCCalROC* AliTPCCalROC::CreateGlobalFitCalROC(TVectorD &fitParam, Int_t sector){
+ //
+ // Create ROC with global fit parameters
+ // The origin of the fit function is the center of the ROC!
+ // loop over all channels, write fit values into new ROC and return it
+ //
+ Float_t dlx, dly;
+ Float_t centerPad[3] = {0};
+ Float_t localXY[3] = {0};
+ AliTPCCalROC * ROCfitted = new AliTPCCalROC(sector);
+ AliTPCROC* tpcROCinstance = AliTPCROC::Instance();
+ tpcROCinstance->GetPositionLocal(sector, ROCfitted->GetNrows()/2, ROCfitted->GetNPads(ROCfitted->GetNrows()/2)/2, centerPad); // calculate center of ROC
+ Int_t fitType = 1;
+ if (fitParam.GetNoElements() == 6) fitType = 1;
+ else fitType = 0;
+ Double_t value = 0;
+ if (fitType == 1) { // parabolic fit
+ for (UInt_t irow = 0; irow < ROCfitted->GetNrows(); irow++) {
+ for (UInt_t ipad = 0; ipad < ROCfitted->GetNPads(irow); ipad++) {
+ tpcROCinstance->GetPositionLocal(sector, irow, ipad, localXY); // calculate position localXY by pad and row number
+ dlx = localXY[0] - centerPad[0];
+ dly = localXY[1] - centerPad[1];
+ value = fitParam[0] + fitParam[1]*dlx + fitParam[2]*dly + fitParam[3]*dlx*dlx + fitParam[4]*dly*dly + fitParam[5]*dlx*dly;
+ ROCfitted->SetValue(irow, ipad, value);
+ }
+ }
+ }
+ else { // linear fit
+ for (UInt_t irow = 0; irow < ROCfitted->GetNrows(); irow++) {
+ for (UInt_t ipad = 0; ipad < ROCfitted->GetNPads(irow); ipad++) {
+ tpcROCinstance->GetPositionLocal(sector, irow, ipad, localXY); // calculate position localXY by pad and row number
+ dlx = localXY[0] - centerPad[0];
+ dly = localXY[1] - centerPad[1];
+ value = fitParam[0] + fitParam[1]*dlx + fitParam[2]*dly;
+ ROCfitted->SetValue(irow, ipad, value);
+ }
+ }
+ }
+ return ROCfitted;
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff