Hello,
I am following the example here: [url]http://root.cern.ch/drupal/content/numerical-minimization[/url]
and have built ROOT with the minuit2 option however, I get the errror:
Undefined symbols for architecture x86_64:
“ROOT::Minuit2::Minuit2Minimizer::SetFunction(ROOT::Math::IBaseFunctionMultiDim const&)”, referenced from:
_main in Prime.o
"ROOT::Minuit2::Minuit2Minimizer::SetVariable(unsigned int, std::basic_string<char, std::char_traits, std::allocator > const&, double, double)", referenced from:
_main in Prime.o
"ROOT::Minuit2::Minuit2Minimizer::PrintResults()", referenced from:
_main in Prime.o
"ROOT::Minuit2::Minuit2Minimizer::Minimize()", referenced from:
_main in Prime.o
"ROOT::Minuit2::Minuit2Minimizer::Minuit2Minimizer(ROOT::Minuit2::EMinimizerType)", referenced from:
_main in Prime.o
"ROOT::Minuit2::Minuit2Minimizer::~Minuit2Minimizer()", referenced from:
_main in Prime.o
"ROOT::Minuit2::Minuit2Minimizer::X() const", referenced from:
_main in Prime.o
ld: symbol(s) not found for architecture x86_64
collect2: error: ld returned 1 exit status
make: *** [Project] Error 1
with the code:
ROOT::Minuit2::Minuit2Minimizer min ( ROOT::Minuit2::kMigrad );
min.SetMaxFunctionCalls(1000000);
min.SetMaxIterations(100000);
min.SetTolerance(0.001);
double StepFactor = 2.;
double U238StepFactor = 5.;
ROOT::Math::Functor f(&LogLikelihood, 24);
min.SetFunction(f);
min.SetVariable(0,"C0", U238Coefficients[0], 1.e-1/U238StepFactor);
min.SetVariable(1,"C1", U238Coefficients[1], 1.e-2/U238StepFactor);
min.SetVariable(2,"C2", U238Coefficients[2], 1.e-2/U238StepFactor);
min.Minimize();
min.PrintResults();
const double *xs = min.X();Does anyone know what is going on? Thank you very much. Please note that I have cut out the majority of my variables. I have 24 but for the sake of briefness, I cut down the code for viewing.