Hi, everyone
I have a question about using IntegralError.
I refered to next URL. https://root.cern.ch/doc/master/classTF1.html#af785051fd4b259fd13601023f2adb5f9
I used this example for my code.
TFitResultPtr r = histo->Fit(func, "S");
func->IntegralError(x1,x2,r->GetParams(), r->GetCovarianceMatrix()->GetMatrixArray() );
I used this function after fitting histogram.
But, my code doesn’t work.
Error is next:
error: member reference type 'TMatrixDSym' (aka 'TMatrixTSym<double>') is not a pointer; did you mean to use '.'?
I refered to next examplehttps://root.cern/doc/master/ErrorIntegral_8C_source.html
Maybe, this code is corresponding code
auto covMatrix = fitResult->GetCovarianceMatrix();
double sigma_integral = fitFunc->IntegralError(0,1, fitResult->GetParams() , covMatrix.GetMatrixArray());
But I don’t know how different my code is.
Could you tell me how to solve this error?