Hello, This probably a really simple question, but I have not found anything helpful in the documentation... I have a graph whose x-axis ranges from 0° to 360°. Thus a wanted to divide the x-axis in a way, that it shows the ticks 0, 90, 180, 270 and 360. How do I do this? I tried it with SetNdivisions but this only gives me the ticks at 100, 200 and 300.. Here is my example macro: void Ticks() { gROOT->Reset(); TCanvas* c1 = new TCanvas("c1","Modulation"); int NPoints = 360; TGraph* gr = new TGraph(NPoints); for (int i = 0; i < NPoints; ++i) { double x = i*360.0/NPoints; double y = 100 + 50*cos(2*x*TMath::Pi()/180); gr->SetPoint(i, x, y); } gr->Draw("AC"); c1->Update(); gr->GetHistogram()->SetXTitle("Azimuthal scatter angle"); gr->GetHistogram()->SetYTitle("Counts"); gr->GetHistogram()->SetAxisRange(0, 360, "X"); gr->GetHistogram()->SetAxisRange(0, 200, "Y"); gr->GetHistogram()->SetNdivisions(504, "X"); c1->Modified(); } Thanks, Andreas
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