Hi all. I have some root files already present and I need to read the data inside the root file using TTree.How to do that?
At the root prompt you need first to open your file:
root[0] auto file = new TFile("your_root_file.root");
then
root[1] file->ls()
will show you the content of your file.
They you can access your tree directly:
root[2] your_tree->Print();