#include "AliTrackPointArray.h"
#include "AliTrackResidualsChi2.h"
+
+
void TrackResidualsChi2Fcn(Int_t &npar, Double_t *gin, Double_t &f, Double_t *x, Int_t iflag);
// Set starting values and step sizes for parameters
Double_t pars[6] = {0,0,0,0,0,0};
+ for(Int_t i=0;i<6;i++) if(fBFixed[i]) pars[i]=fFixed[i];
Double_t step[6] = {0.0001,0.0001,0.0001,0.0001,0.0001,0.0001};
ierflg = fitter->SetParameter(0, "dx", pars[0], step[0], 0,0);
ierflg = fitter->SetParameter(1, "dy", pars[1], step[1], 0,0);
ierflg = fitter->SetParameter(4, "theta", pars[4], step[4], 0,0);
ierflg = fitter->SetParameter(5, "phi", pars[5], step[5], 0,0);
+ // Fix parameters
+ if(fBFixed[0]) {printf("Fixing dx=%f\n",pars[0]); fitter->FixParameter(0);}
+ if(fBFixed[1]) {printf("Fixing dy=%f\n",pars[1]); fitter->FixParameter(1);}
+ if(fBFixed[2]) {printf("Fixing dz=%f\n",pars[2]); fitter->FixParameter(2);}
+ if(fBFixed[3]) {printf("Fixing psi=%f\n",pars[3]); fitter->FixParameter(3);}
+ if(fBFixed[4]) {printf("Fixing theta=%f\n",pars[4]); fitter->FixParameter(4);}
+ if(fBFixed[5]) {printf("Fixing phi=%f\n",pars[5]); fitter->FixParameter(5);}
+
// Now ready for minimization step
arglist[0] = 500;
arglist[1] = 1.;
Double_t amin,edm,errdef;
Int_t nvpar,nparx,icstat;
icstat = fitter->GetStats(amin,edm,errdef,nvpar,nparx);
- fChi2 = amin; fNdf -= nvpar;
+ //Construct the covariance matrix for AlignObj
+ Double_t *cov=fitter->GetCovarianceMatrix();
+ Int_t unfixedparam=6;
+ Int_t fixedparamat[6]={0,0,0,0,0,0};
+ if(fBFixed[0]==kTRUE){
+ unfixedparam--;
+ fixedparamat[0]=1;
+ }
+ for(Int_t j=1;j<6;j++){
+ if(fBFixed[j]==kTRUE){
+ unfixedparam--;
+ fixedparamat[j]=fixedparamat[j-1]+1;
+ }
+ else fixedparamat[j]=fixedparamat[j-1];
+ }
+
+ Double_t cov2[36];
+ for(Int_t i=0;i<6;i++){
+ for(Int_t j=0;j<6;j++){
+ if(fBFixed[i]==kTRUE||fBFixed[j]==kTRUE){
+ cov2[i+6*j]=0.;
+ }
+ else cov2[i+6*j]=cov[i-fixedparamat[i]+6*(j-fixedparamat[j])];
+
+ }
+ }
+
+ Double_t covmatrarray[21];
+ for(Int_t j=0;j<6;j++){
+ for(Int_t i=j;i<6;i++){
+ covmatrarray[i*(i+1)/2+j]=cov2[i+6*j];
+ }
+ }
+
+ // printf("covar 2: %.10f \n %.10f ; %.10f ; \n; %.10f; %.10f; %.10f; \n %.10f; %.10f; %.10f; %.10f; \n %.10f ; %.10f ; %.10f ; %.10f ; %.10f \n %.10f ; %.10f ; %.10f ; %.10f ; %.10f ; %.10f ;\n",covmatrarray[0],covmatrarray[1],covmatrarray[2],covmatrarray[3],covmatrarray[4],covmatrarray[5],covmatrarray[6],covmatrarray[7],covmatrarray[8],covmatrarray[9],covmatrarray[10],covmatrarray[11],covmatrarray[12],covmatrarray[13],covmatrarray[14],covmatrarray[15],covmatrarray[16],covmatrarray[17],covmatrarray[18],covmatrarray[19],covmatrarray[20]);
+
+
+ fAlignObj->SetCorrMatrix(covmatrarray);
+ fChi2 = amin; fNdf -= nvpar;
+
return kTRUE;
}
}
f = chi2;
}
+
+