Adding setter and getter for systematic uncertainty of the track parameters

Adding setter and getter for systematic uncertainty of the track parameters

  // Setting for systematic errors addition
  [0] - systematic RMSY
  [1] - systematic RMSZ
  [2] - systematic RMSSNP
  [3] - systematic RMSTheta
  [4] - systematic RMSCuravture -  systematic error in 1/cm not in 1/pt
  //
  //  How to add it example - 3 mm systematic error y, 3 cm systematic error z (drift)
  Double_t sysError[5]={0.3,3, 0.3/150., 3./150.,1/(0.3*150*150.)}
  param->SetSystematicError(sysError);

(Marian)