Hi experts. I have a problem when i set the range of TH2D’s Yaxis. TChain *ch = new TChain(“ntp”); char filename[300]; for (int i=1; i<=459; i++){ TString datadir = “/data/COSINE/WORK/islee/NaI037/data/MRGD/”; sprintf(filename,“mrgd6_M000950.root.%.3d”,i); ch->Add(datadir+filename); } TCanv…

Setting TH2D range

dastudillo August 4, 2021, 6:29am 2

Dear experts, I want to use “tree->Draw(“var>>hist”);” then draw the hist in a canvas. I have the code (1) and the root file (2) to be add ate line 13. I have a default canvas which appears, but nothing on the canvas that I asked line 104, 108 and 116. Do you see what is wrong? Regards (1) http://calpas.web.cern.ch/calpas/plot.cc (2) http://calpas.web.cern.ch/calpas/sumWeightsFromTree.root

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