Example of a fit residual plot.
Creates a histogram filled with random numbers from a gaussian distribution and fits it with a standard gaussian function. The result is passed to the TRatioPlot
constructor. Additionally, after calling TRatioPlot::Draw
the upper and lower y axis titles are modified. Confidence interval bands are automatically drawn on the bottom (but can be disabled by draw option nobands
).
auto c1 =
new TCanvas(
"c1",
"fit residual simple");
auto h1 =
new TH1D(
"h1",
"h1", 50, -5, 5);
rp1->Draw();
rp1->GetLowerRefYaxis()->SetTitle("ratio");
rp1->GetUpperRefYaxis()->SetTitle("entries");
}
R__EXTERN TStyle * gStyle
1-D histogram with a double per channel (see TH1 documentation)
virtual void FillRandom(TF1 *f1, Int_t ntimes=5000, TRandom *rng=nullptr)
virtual TFitResultPtr Fit(const char *formula, Option_t *option="", Option_t *goption="", Double_t xmin=0, Double_t xmax=0)
Fit histogram with function fname.
virtual void SetTitle(const char *title="")
Set the title of the TNamed.
Class for displaying ratios, differences and fit residuals.
void SetOptStat(Int_t stat=1)
The type of information printed in the histogram statistics box can be selected via the parameter mod...
- Author
- Paul Gessinger
Definition in file ratioplot2.C.