Hi experts, I am trying to fill a histogram From a leaf of a TTree but it doesn’t work as it should. When trying to fill the Histogram in the interactive mode (just typing root -l and then typing the code to the terminal) it works well. I load my .root file and call the TTree and write evt->Draw(“…

I improved my example source code above so that it produces a nonempty “h_raw_pos” histogram. @pcanal However, I’m afraid that this tree is complex enough that it often requires dictionaries for classes that it uses (i.e. you will not have luck with a simple “ MakeClass ” generated code).

Unable to fill properly Histogram from TTree

ROOT

Wile_E_Coyote February 28, 2020, 7:29am 2

Attach the oputput from: t1->Print();