Top "Root-framework" questions

ROOT is an object-oriented framework developed by CERN written in C++. It is especially designed to efficiently handle large amounts of data.

Cern ROOT - How to read contents from a TTree root file into array

I am trying to read data in from a Cern ROOT TTree file. I have not used root before and …

c++ root-framework
How to open root files (ROOT Framework)

How to open .root file in C++ code ? and read and print parameter from .root file using C++ code on …

file frameworks analysis root-framework
Clion or cmake does not see environment variable

I'm using CLion IDE, Cmake and trying to write Hello world using CERN ROOT library. CMakeLists.txt: message(STATUS $ENV{…

cmake environment-variables clion root-framework
Creating and filling a ROOT file from a text file

this is about C++ coding in CERN ROOT. So I have a text file with columns of data. Now I …

c++ tree root-framework
CERN ROOT exporting data to plain text

So I have tried and tried to follow similar questions asked like this one, but to no success. It's really …

export analysis root-framework
TypeError: 'type' object has no attribute '__getitem__'

I keep getting an error when trying to run the rmakeprofile command. I get an error saying that 'type' object …

python python-2.7 root-framework
Reading a TTree in root using PyRoot

I just started using pyroot to read root files and I can't read the data from a file using jupyter …

python root-framework pyroot
Adding a second x axis to a TGraph in the CERN ROOT program

does anyone know the method or code to add a second x axis to a TGraph in CERN's ROOT program? …

root-framework
write/read string in a TTree (cern root)

after saving a string into a TTree std::string fProjNameIn, fProjNameOut; TTree *tTShowerHeader; tTShowerHeader = new TTree("tTShowerHeader","Parameters of the …

c++ string tree root-framework
How to compile multiple files in ROOT

I wrote a C++ program (with a main.cpp, and various header and implementation files) that compiles fine under g++. …

c++ compilation root-framework