Get boundaries of named range

Roofit and RooStats
1

Hi RooFitters,

Is there a way to retrieve the min and max values of a named range in RooFit? What I’m looking for might be appropriately called getRangeMin() and getRangeMax() and would do the following:

[code]RooRealVar x(“x”,“x”,0.,-1.,1.);
x.setRange(“myNamedRange”,-0.5,0.5);

double rangeMin = x.getRangeMin(“myNamedRange”);
double rangeMax = x.getRangeMax(“myNamedRange”);[/code]

where the values of rangeMin and rangeMax would be -0.5 and 0.5, respectively. Unfortunately, I can’t even think of a way to write my own function which could access these boundaries. Let me know if you have insight.

Thanks,
Etienne

2

Hi.

You can use the RooAbsReal::getBinning function.

RooRealVar x("x","x",0.,-1.,1.);
x.setRange("myNamedRange",-0.5,0.5);

double rangeMin = x.getBinning("myNamedRange").lowBound();
double rangeMax = x.getBinning("myNamedRange").highBound();

Lorenzo