Hello, I would like to ask if you can recommend me a tutorial for a very beginner? I received root files with data. I can already write a simple macro that opens a root file, draw a graph, a histogram, and save it to a new root file. Now I would like to learn how I can extract numeric data from …

See Get Started - ROOT and ROOT Primer - ROOT

[image] Header files for Trees ROOT “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 Para…

Sorry for the too simple question. I am doing the exercise with https://root.cern.ch/root/html534/guides/users-guide/Trees.html#using-ttreemakeclass by typing .L libEvent.so I get error macro libEvent.so not found in path .:/snap/root-framework/928/usr/local/macros Is written: if it doesn’t exi…

cd $ROOTSYS/test make -k will create libEvent.so

I didn’t find the location in root_v26.10 $ROOTSYS/test Should I create $ROOTSYS/test ?

When you download the ROOT sources the test directory comes with

Thanks a lot for sharing! As someone who’s also just starting out in the world of ROOT analysis, your post is incredibly helpful. I’ve managed to learn a bit so far, but starting with the basics is essential. And I haven’t even seen the tips on TTree:CloneTree and TTreeReader before. Thanks …

Hi everyone! I would like to also get some tutorials for beginners. We recently switched to this framework, and to be honest, I feel lost sometimes. That’s why I’ve decided to join this forum in the first place. So, if you have any tutorials for beginners, feel free to share.

Welcome to the ROOT forum The tuorials are available here: ROOT: Tutorials To have a globl overview have.a look to the Manual: ROOT Manual - ROOT Finally the Primer might also help you to start: ROOT Primer - ROOT

Thanks for the Root tutorials. I find them pretty helpful. Also, if you could share some practical problems to solve, it would be really helpful. But thanks anyway.

Tutorial for beginner (TTree::MakeClass TTree::MakeSelector)

Newbie

Wile_E_Coyote November 29, 2023, 8:47am 3