illustrates the use of TFeldmanCousins class
void FeldmanCousins()
{
// Example macro of using the TFeldmanCousins class in root.
// Author : Adrian John Bevan <bevan@SLAC.Stanford.EDU>
//
// get a FeldmanCousins calculation object with the default limits
// of calculating a 90% CL with the minimum signal value scanned
// = 0.0 and the maximum signal value scanned of 50.0
TFeldmanCousins f;
// calculate either the upper or lower limit for 10 observerd
// events with an estimated background of 3. The calculation of
// either upper or lower limit will return that limit and fill
// data memebers with both the upper and lower limit for you.
Double_t Nobserved = 10.0;
Double_t Nbackground = 3.0;
Double_t ul = f.CalculateUpperLimit(Nobserved, Nbackground);
Double_t ll = f.GetLowerLimit();
cout << "For " << Nobserved << " data observed with and estimated background"<<endl;
cout << "of " << Nbackground << " candidates, the Feldman-Cousins method of "<<endl;
cout << "calculating confidence limits gives:"<<endl;
cout << "tUpper Limit = " << ul << endl;
cout << "tLower Limit = " << ll << endl;
cout << "at the 90% CL"<< endl;
}
ROOT page - Class index - Top of the page
This page has been automatically generated. If you have any comments or suggestions about the page layout send a mail to ROOT support, or contact the developers with any questions or problems regarding ROOT.