for example:
TF1 * f1 = new TF1(“f1”, “[0]+[1]*x”);
f1->SetParameters(0,3);
f1->SetParErrors(1,1);
how should I get and draw the confidence intervals like
(TVirtualFitter::GetFitter())->GetConfidenceIntervals(gint);
?
for example:
TF1 * f1 = new TF1(“f1”, “[0]+[1]*x”);
f1->SetParameters(0,3);
f1->SetParErrors(1,1);
how should I get and draw the confidence intervals like
(TVirtualFitter::GetFitter())->GetConfidenceIntervals(gint);
?
I’m not sure I understand the meaning of “confidence interval” without a prior fit - can you explain which confidence you’re referring to?
If I have points with TGraphErrors and Fit with function
I could use (TVirtualFitter::GetFitter())->GetConfidenceIntervals(gint) to got the GetConfidenceIntervals at difference points.
but If I only have function with parameters and parameters’error, I don’t find an function to get the Confidence Interval(for example, one sigma) at some points. though I could calculate it by hand using .
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