class AliTrackComparison: public TNamed

 Default constructor

 Non default cosntructor

 copy constructor

Initilized the output histograms

 Make track param out of track reference
 Test propagation from ref0 to ref1
 Fill the THnSparse with ref0 and ref1

Test propagation from param0 to param1
Fill the THnSparse with param0 and param1

Test propagation from param0 to point1
This function is usually called in real data analysis when only the
position of the track point is known. In this case, the angles
in the track param are not the angles of the track momentum, but position.
Only the first two and last two THnSparse are meaninglful and should be
filled. Set this via SetFillAll(kFALSE)

Extrapolate is performed

 Make track out of the track ref
 the covariance matrix - equal 0 - starting from ideal MC position

Merge the comparison objects

 Add THnSparse

Called in Init() to initialize histograms

Fill the THnSparse.
In case of not filling all, only the 4 out of 6 THnSparse are filed

 make a distortion map out of the residual histogram
 Results are written to the debug streamer - pcstream
 Parameters:
   pcstream   - file to write the tree
   run        - run number
   refX       - track matching reference X
   type       - 0- y 1-z,2 -snp, 3-theta, 4-1/pt, 5-corrected 1/pT
 THnSparse axes:
 OBJ: TAxis     #Delta  #Delta
 OBJ: TAxis     tanTheta        tan(#Theta)
 OBJ: TAxis     phi     #phi
 OBJ: TAxis     1/pt    1/pt
 OBJ: TAxis     LayerID LayerID
 marian.ivanov@cern.ch

Set the step used in extrapolatoin

Set the range of the first bins of the THnSparse

Set number of bins

Set the layer ID of the detectors. Refer to AliGeomManager.h

Set the flag to fill all the THnSparse's. By default it is kTURE

Getter

Set number of bins used to combine statistics