Hi all. I’m using ROOT 6.22/02 and RooFit package on lxplus CERN service. I need to perform a convolution with RooFFTConvPdf but when I run the macro doing it, I got this error message
Error in TUnixSystem::FindDynamicLibrary: libRooFitMore[.so | .dll | .dylib | .sl | .dl | .a] does not exist in /usr/lib64/root:.:/usr/lib64/root:/lib64/tls/x86_64:/lib64/tls:/lib64/x86_64:/lib64:/usr/lib64/tls/x86_64:/usr/lib64/tls:/usr/lib64/x86_64:/usr/lib64
[#0] ERROR:Integration – RooNumIntFactory::Init : libRooFitMore cannot be loaded. GSL integrators will not beavailable !
The lines involved are
RooRealVar a(“a”,“a”,-0.5,-4.,-0.5) ;
RooRealVar a1(“a1”,“a1”,0.5,0.,5.);
RooRealVar a2(“a2”,“a2”,0.5,0.,3.);
RooRealVar a3(“a3”,“a3”,1.);
RooGenericPdf erf1(“erf1”,“Generic PDF”,"(a3+TMath::Erf(a1*(lifetime-a2)))TMath::Exp(alifetime)",RooArgSet(lifetime,a,a1,a2,a3));
RooRealVar mean(“mean”,“mean”,0.);
RooRealVar sigma(“sigma”,“sigma”,0.5,0.,1.) ;
RooGaussian gauss(“gauss”,“gauss”,lifetime,mean,sigma) ;
RooFFTConvPdf exg(“exg”,“erf1(X) gauss”,lifetime,erf1,gauss) ;
The last line causes the error.
Is it a problem of root version or should I explicitly include some library?
Thank you very much for your help.
Cheers,
Fabiola.