*Break* segmentation violation and failed to access leaf in array from tree contains CORSIKA data

[Wile_E_Coyote]

Header files for Trees

“Most recent” documentation about how to generate and use an “analysis skeleton”: TTree::MakeClass (see also “ROOT User’s Guide” → “Trees” → “Using TTree::MakeClass”) TTree::MakeSelector (see also “ROOT Primer” → “File I/O and Parallel Analysis” → “N-tuples in ROOT” → “For the advanced user: Processing trees with a selector script” and “ROOT User’s Guide” → “Trees” → “Using TTree::MakeSelector” and “ROOT User’s Guide” → “Example Analysis”) TTree::MakeProxy ROOT::RDataFrame (uses the T…

Read values from root file

Hi, please take a look at the tutorials, in particular the ones under “Tree tutorials”. You can also search this forum for more specific issues. As an overview, there are four main ways to loop over ROOT data (lower to higher level): using TTree and SetBranchAddress (see e.g. this example) using TTreeReader and TTreeReaderValue (see e.g. this example) using TTree::Draw to directly create histograms (I could not find tutorials, documentation is here, some example usage is here) using TDataFra…

ROOT::RDataFrame Class Reference + Dataframe tutorials