Hi, I wanted to superimpose my simulated decay spectra of Bi-207 with one from the experiment. I saved the two histgram as a .C file and tried to superimpose them but the issue is my simulated spectra is in MeV range while the one from the experiment is in KeV. How do i scale on the x - axis?

Wile_E_Coyote June 28, 2022, 3:53pm 2

Can we shift histogram for several channels? ROOT

I’m not sure if this is fully kosher, but suit yourself : #include "TAxis.h" #include "TH1.h" #include "TArrayD.h" Double_t ScaleX(Double_t x) { Double_t v; v = 10 * x + 100; // "linear scaling" function example return v; } Double_t ScaleY(Double_t y) { Double_t v; v = 20 * y + 200; // "linear scaling" function example return v; } Double_t ScaleZ(Double_t z) { Double_t v; v = 30 * z + 300; // "linear scaling" function example return v; } void ScaleAxis(TAxis *a, Double_t (…

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Adding two histograms wih different x-axis