I’ve used working script at ROOT5.34 but I cann’t use it at ROOT6.04.16 The first lines of script are: void fitADC(){ TFile *hf=new TFile("ADC.root"); Double_t par[9]; Int_t Nbins=h1->GetNbinsX(); Double_t xmin=h1->GetXaxis()->GetXmin(); Double_t xmax=h1->GetXaxis()->GetXmax(); Double_…

Try this one: plot_theta13_proj.C (4.1 KB)

Here is a corrected version of your macro: appearance_nu_mode_0.cc (2.3 KB)

Hello everyone! I made a loop on theta23 in TGraph*pchisq2, My problem that I want to find the point where the chisquare is equal to 1. I think I will get Eval for each theta23’s point, if the returned value is close to 1 (or 1 +/- 1e-5) then that values will be printed. How will I do? How can I …

I ran you macro. I get the following plot: [Screenshot 2020-04-06 at 09.49.24] I am not sure what is your problem exactly. May be @moneta has an idea.

Right. I mean from this plot, What command I can use to know at what value in x-axis is correspond to the value of y=1

plot_theta13_proj.C (4.0 KB) [Screenshot 2020-04-06 at 11.31.16] root [0] Processing plot_theta13_proj.C... The mean value of chisq is 3.1245e-05 and2 2.56002e-05 0.05 0.12 x = 0.09445 x = 0.10495 In the macro I sent you you can change dx to have a better precision. For instance double dx = (x…

{ const char *f = "theta13_proj_reactor_6.dat"; TGraph *pchisq = new TGraph(f, "%lg %lg %*s"); pchisq->Sort(); TGraph *pchisq2 = new TGraph(f, "%lg %*s %lg"); pchisq2->Sort(); Int_t n = pchisq->GetN(); Double_t xmin = pchisq->GetX()[0]; Double_t xmax = pchisq->GetX()[(n - 1)]; TF1 *fq …

Hi couet! I made errors when I run your code. I used root version 6.10.04 [image]

It seems you have y0 already defined elsewhere in your code. The code I added is: double x0 = atheta13[0]; double x1 = atheta13[TotalLine-1]; printf("%g %g\n",x0,x1); double dx = (x1-x0)/100000.; double y = 1.; double y0, y1; TLine *l = new TLine(); l->SetLineStyle(2); …

I didn’t use y0 before. plot_theta13_proj.C (4.0 KB) [image (4)]

Can you send me the macro you are running ? I do not see the error with the macro I sent you …

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