ROOT Forum

Topic	Replies	Views	Activity
🚀 3rd ROOT Hackathon: The Fixathon 2.0 News :date: 11-12 May 2026 \| :round_pushpin: CERN, IdeaSquare We’re excited to announce the 3rd ROOT Hackathon, taking place at CERN’s IdeaSquare: the Innovation Space of the lab! This edition -The Fixathon 2.0 - is a 2-day…	2	72	March 31, 2026
Newbie forum for when you're not sure News If you’re new to ROOT, C++, data analysis etc, and you hesitate to ask your question, then please ask it in the Newbie section, where nice people help and we have special rules to be more welcoming. Don’t hesitate, jus…	4	19466	February 19, 2025
Welcome to the ROOT forum! News	1	8271	February 10, 2017
TBufferMerger fails to write histograms to output file for Alma Linux ROOT hist	1	10	April 11, 2026
Cannot connect to the RGeomViewer/THttpEngine ROOT	7	26	April 10, 2026
Extended Likelihood Question of ROOFIT Roofit and RooStats root	5	21	April 10, 2026
A memory leak with RDataFrame.AsNumpy() and vector<vector<vector<float>>> ROOT python	8	81	April 10, 2026
TImage DrawCircle cause core dump ROOT root	3	24	April 9, 2026
TGraph/TMultiGraph yaxis Ndivisions and range ROOT jsroot	9	42	April 7, 2026
Cling error on macOS 26.4 (Homebrew ROOT 6.38.04): missing libc++ header __type_traits/add_lvalue_reference.h and ABI warning ROOT	4	146	April 5, 2026
ROOT error after the new command line tool update : "Command Line Tools for Xcode 26.4" ROOT root	1	22	April 4, 2026
Large changes in branch sizes in later builds of ROOT ROOT root	6	77	April 1, 2026
Clinglite + idacling : C++ REPL for IDA Pro Cling cling	1	30	March 31, 2026
NeBem error during installation in macos 12.4.8 sonoma Garfield++	2	34	March 30, 2026
Bug in h2root General Chat	12	66	March 30, 2026
ERROR: GPU use requested but Garfield has not been built with GPU support Garfield++	5	56	April 10, 2026
Is it possible to disable progress bar? Newbie root	2	38	March 24, 2026
Problem deleting TList of TCanvases ROOT	6	46	April 6, 2026
CANU – CANvas Unifier for ROOT Evolution Proposals, Apps & Ideas	2	47	March 21, 2026
Installation issue with MacOS ROOT installation	4	51	April 3, 2026
Rootcling warnings when compiling ROOT 6.36.08 with C++23 ROOT root	3	41	April 3, 2026
What are the most difficult C++ topics to learn? Newbie	7	145	March 20, 2026
SumCoefRange() (or equivalent) argument for RooAbsPdf::PlotOn() Roofit and RooStats	2	29	April 1, 2026
Roofit - multiple fit different datasets using different PDFs with some shared parameters - ROOT version issue Roofit and RooStats python	4	40	March 31, 2026
How to clean/delete properly RooDataSet in PyROOT? Roofit and RooStats	15	46	March 28, 2026
ROOT 6.36.10 is out! News	1	43	March 14, 2026
The VSCode editor cannot find the Garfield++ header file Garfield++	4	33	March 27, 2026
ROOT 6.38.04 is out! News	1	45	March 12, 2026
Missing file error when installing in windows Newbie root	4	50	March 11, 2026
Setting kEntriesReshuffled when using RDatasetSpec ROOT tree , python , rdataframe	8	47	March 25, 2026

🚀 3rd ROOT Hackathon: The Fixathon 2.0

:date: 11-12 May 2026 | :round_pushpin: CERN, IdeaSquare We’re excited to announce the 3rd ROOT Hackathon, taking place at CERN’s IdeaSquare: the Innovation Space of the lab! This edition -The Fixathon 2.0 - is a 2-day…

2

72

March 31, 2026

Newbie forum for when you're not sure

News

If you’re new to ROOT, C++, data analysis etc, and you hesitate to ask your question, then please ask it in the Newbie section, where nice people help and we have special rules to be more welcoming. Don’t hesitate, jus…