Hi, (excuse me for my english) I created a tree with some variables, someone can tell me how do for to have an plot with my desidered bin when click on the leaf of the tree? {... TTree *tmc = new TTree("tmc","Tree for montecarlo"); tmc->Branch("dalix_mc" ,&dalix_mc ,"dalix_mc/D" ); tmc->Branch("dalix_mc_rec",&dalix_mc_rec,"dalix_mc_rec/D"); tmc->Branch("daliy_mc" ,&daliy_mc ,"daliy_mc/D" ); tmc->Branch("daliy_mc_rec",&daliy_mc_rec,"daliy_mc_rec/D"); tmc->Branch("daliy_ch_rec",&daliy_ch_rec,"daliy_ch_rec/D"); tmc->Branch("isrec" ,&isrec ,"isrec/B" ); ... tmc->Fill(); ... } Best regards Francesco.
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